kernel_id int64 24.2k 23.3M | prompt stringlengths 8 1.85M | completetion stringlengths 1 182k | comp_name stringlengths 5 57 |
|---|---|---|---|
13,420,831 | tqdm.pandas(desc='Progress')
<define_variables> | tuned_LR = LogisticRegression(C= 11.288378916846883, max_iter= 100, penalty= 'l1', random_state= 42, solver= 'liblinear')
get_model_accuracy(tuned_LR ) | Titanic - Machine Learning from Disaster |
13,420,831 | embed_size = 300
max_features = 120000
maxlen = 70
batch_size = 512
n_epochs = 5
n_splits = 5
SEED = 1029<set_options> | param_grid = {
'random_state': [42],
'C': [.1,.3, 1, 3],
'kernel': ['rbf'],
'gamma': [.03,.1,.3, 1]
}
clf_SVC = GridSearchCV(SVC, param_grid=param_grid, cv=5, verbose=True, n_jobs=-1)
best_clf_SVC = clf_SVC.fit(X_train_scaled, y_train)
clf_performance(best_clf_SVC ) | Titanic - Machine Learning from Disaster |
13,420,831 | def seed_everything(seed=1029):
random.seed(seed)
os.environ['PYTHONHASHSEED'] = str(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
torch.backends.cudnn.deterministic = True
seed_everything()<features_selection> | print_valid_params("'C': 3, 'gamma': 0.03, 'kernel': 'rbf', 'random_state': 42" ) | Titanic - Machine Learning from Disaster |
13,420,831 | def load_glove(word_index):
EMBEDDING_FILE = '.. /input/embeddings/glove.840B.300d/glove.840B.300d.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')[:300]
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE))
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = -0.005838499,0.48782197
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix
def load_fasttext(word_index):
EMBEDDING_FILE = '.. /input/embeddings/wiki-news-300d-1M/wiki-news-300d-1M.vec'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE)if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = all_embs.mean() , all_embs.std()
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix
def load_para(word_index):
EMBEDDING_FILE = '.. /input/embeddings/paragram_300_sl999/paragram_300_sl999.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE, encoding="utf8", errors='ignore')if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = -0.0053247833,0.49346462
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix<load_from_csv> | tuned_SVC = svm.SVC(C= 3, gamma= 0.03, kernel= 'rbf', random_state= 42, probability=True)
get_model_accuracy(tuned_SVC ) | Titanic - Machine Learning from Disaster |
13,420,831 | df_train = pd.read_csv(".. /input/train.csv")
df_test = pd.read_csv(".. /input/test.csv")
df = pd.concat([df_train ,df_test],sort=True )<feature_engineering> | param_grid = {
'n_neighbors': [3, 5, 7, 9],
'weights': ['uniform', 'distance'],
'algorithm': ['auto', 'ball_tree', 'kd_tree'],
'p': [1, 2]
}
clf_KNN = GridSearchCV(KNN, param_grid=param_grid, cv=5, verbose=True, n_jobs=-1)
best_clf_KNN = clf_KNN.fit(X_train_scaled, y_train)
clf_performance(best_clf_KNN ) | Titanic - Machine Learning from Disaster |
13,420,831 | def build_vocab(texts):
sentences = texts.apply(lambda x: x.split() ).values
vocab = {}
for sentence in sentences:
for word in sentence:
try:
vocab[word] += 1
except KeyError:
vocab[word] = 1
return vocab
vocab = build_vocab(df['question_text'] )<define_variables> | print_valid_params("'algorithm': 'auto', 'n_neighbors': 7, 'p': 2, 'weights': 'uniform'" ) | Titanic - Machine Learning from Disaster |
13,420,831 | sin = len(df_train[df_train["target"]==0])
insin = len(df_train[df_train["target"]==1])
persin =(sin/(sin+insin)) *100
perinsin =(insin/(sin+insin)) *100
print("
print("<feature_engineering> | tuned_KNN = KNeighborsClassifier(algorithm= 'auto', n_neighbors= 7, p= 2, weights= 'uniform')
get_model_accuracy(tuned_KNN ) | Titanic - Machine Learning from Disaster |
13,420,831 | def build_vocab(texts):
sentences = texts.apply(lambda x: x.split() ).values
vocab = {}
for sentence in sentences:
for word in sentence:
try:
vocab[word] += 1
except KeyError:
vocab[word] = 1
return vocab
def known_contractions(embed):
known = []
for contract in contraction_mapping:
if contract in embed:
known.append(contract)
return known
def clean_contractions(text, mapping):
specials = ["’", "‘", "´", "`"]
for s in specials:
text = text.replace(s, "'")
text = ' '.join([mapping[t] if t in mapping else t for t in text.split(" ")])
return text
def correct_spelling(x, dic):
for word in dic.keys() :
x = x.replace(word, dic[word])
return x
def unknown_punct(embed, punct):
unknown = ''
for p in punct:
if p not in embed:
unknown += p
unknown += ' '
return unknown
def clean_numbers(x):
x = re.sub('[0-9]{5,}', '
x = re.sub('[0-9]{4}', '
x = re.sub('[0-9]{3}', '
x = re.sub('[0-9]{2}', '
return x
def clean_special_chars(text, punct, mapping):
for p in mapping:
text = text.replace(p, mapping[p])
for p in punct:
text = text.replace(p, f' {p} ')
specials = {'\u200b': ' ', '…': '...', '\ufeff': '', 'करना': '', 'है': ''}
for s in specials:
text = text.replace(s, specials[s])
return text
def add_lower(embedding, vocab):
count = 0
for word in vocab:
if word in embedding and word.lower() not in embedding:
embedding[word.lower() ] = embedding[word]
count += 1
print(f"Added {count} words to embedding" )<define_variables> | param_grid = {
'random_state': [42],
'n_estimators': [10, 30, 100, 300, 1000],
'bootstrap': [True, False],
'max_depth': [1, 3, 10, 30, 100, None],
'max_features': ['auto', 'sqrt'],
'min_samples_leaf': [1, 3, 10, 30],
'min_samples_split': [2, 4, 7, 10]
}
clf_RFC = RandomizedSearchCV(RFC, param_distributions=param_grid, n_iter=100, cv=5, verbose=True, n_jobs=-1)
best_clf_RFC = clf_RFC.fit(X_train_scaled, y_train)
clf_performance(best_clf_RFC ) | Titanic - Machine Learning from Disaster |
13,420,831 | puncts = [',', '.', '"', ':', ')', '(', '-', '!', '?', '|', ';', "'", '$', '&', '/', '[', ']', '>', '%', '=', '
'·', '_', '{', '}', '©', '^', '®', '`', '<', '→', '°', '€', '™', '›', '♥', '←', '×', '§', '″', '′', 'Â', '█', '½', 'à', '…',
'“', '★', '”', '–', '●', 'â', '►', '−', '¢', '²', '¬', '░', '¶', '↑', '±', '¿', '▾', '═', '¦', '║', '―', '¥', '▓', '—', '‹', '─',
'▒', '：', '¼', '⊕', '▼', '▪', '†', '■', '’', '▀', '¨', '▄', '♫', '☆', 'é', '¯', '♦', '¤', '▲', 'è', '¸', '¾', 'Ã', '⋅', '‘', '∞',
'∙', '）', '↓', '、', '│', '（', '»', '，', '♪', '╩', '╚', '³', '・', '╦', '╣', '╔', '╗', '▬', '❤', 'ï', 'Ø', '¹', '≤', '‡', '√', ]
def clean_text(x):
x = str(x)
for punct in puncts:
x = x.replace(punct, f' {punct} ')
return x
def clean_numbers(x):
x = re.sub('[0-9]{5,}', '
x = re.sub('[0-9]{4}', '
x = re.sub('[0-9]{3}', '
x = re.sub('[0-9]{2}', '
return x
mispell_dict = {"ain't": "is not", "aren't": "are not","can't": "cannot", "'cause": "because", "could've": "could have", "couldn't": "could not", "didn't": "did not", "doesn't": "does not", "don't": "do not", "hadn't": "had not", "hasn't": "has not", "haven't": "have not", "he'd": "he would","he'll": "he will", "he's": "he is", "how'd": "how did", "how'd'y": "how do you", "how'll": "how will", "how's": "how is", "I'd": "I would", "I'd've": "I would have", "I'll": "I will", "I'll've": "I will have","I'm": "I am", "I've": "I have", "i'd": "i would", "i'd've": "i would have", "i'll": "i will", "i'll've": "i will have","i'm": "i am", "i've": "i have", "isn't": "is not", "it'd": "it would", "it'd've": "it would have", "it'll": "it will", "it'll've": "it will have","it's": "it is", "let's": "let us", "ma'am": "madam", "mayn't": "may not", "might've": "might have","mightn't": "might not","mightn't've": "might not have", "must've": "must have", "mustn't": "must not", "mustn't've": "must not have", "needn't": "need not", "needn't've": "need not have","o'clock": "of the clock", "oughtn't": "ought not", "oughtn't've": "ought not have", "shan't": "shall not", "sha'n't": "shall not", "shan't've": "shall not have", "she'd": "she would", "she'd've": "she would have", "she'll": "she will", "she'll've": "she will have", "she's": "she is", "should've": "should have", "shouldn't": "should not", "shouldn't've": "should not have", "so've": "so have","so's": "so as", "this's": "this is","that'd": "that would", "that'd've": "that would have", "that's": "that is", "there'd": "there would", "there'd've": "there would have", "there's": "there is", "here's": "here is","they'd": "they would", "they'd've": "they would have", "they'll": "they will", "they'll've": "they will have", "they're": "they are", "they've": "they have", "to've": "to have", "wasn't": "was not", "we'd": "we would", "we'd've": "we would have", "we'll": "we will", "we'll've": "we will have", "we're": "we are", "we've": "we have", "weren't": "were not", "what'll": "what will", "what'll've": "what will have", "what're": "what are", "what's": "what is", "what've": "what have", "when's": "when is", "when've": "when have", "where'd": "where did", "where's": "where is", "where've": "where have", "who'll": "who will", "who'll've": "who will have", "who's": "who is", "who've": "who have", "why's": "why is", "why've": "why have", "will've": "will have", "won't": "will not", "won't've": "will not have", "would've": "would have", "wouldn't": "would not", "wouldn't've": "would not have", "y'all": "you all", "y'all'd": "you all would","y'all'd've": "you all would have","y'all're": "you all are","y'all've": "you all have","you'd": "you would", "you'd've": "you would have", "you'll": "you will", "you'll've": "you will have", "you're": "you are", "you've": "you have", 'colour': 'color', 'centre': 'center', 'favourite': 'favorite', 'travelling': 'traveling', 'counselling': 'counseling', 'theatre': 'theater', 'cancelled': 'canceled', 'labour': 'labor', 'organisation': 'organization', 'wwii': 'world war 2', 'citicise': 'criticize', 'youtu ': 'youtube ', 'Qoura': 'Quora', 'sallary': 'salary', 'Whta': 'What', 'narcisist': 'narcissist', 'howdo': 'how do', 'whatare': 'what are', 'howcan': 'how can', 'howmuch': 'how much', 'howmany': 'how many', 'whydo': 'why do', 'doI': 'do I', 'theBest': 'the best', 'howdoes': 'how does', 'mastrubation': 'masturbation', 'mastrubate': 'masturbate', "mastrubating": 'masturbating', 'pennis': 'penis', 'Etherium': 'Ethereum', 'narcissit': 'narcissist', 'bigdata': 'big data', '2k17': '2017', '2k18': '2018', 'qouta': 'quota', 'exboyfriend': 'ex boyfriend', 'airhostess': 'air hostess', "whst": 'what', 'watsapp': 'whatsapp', 'demonitisation': 'demonetization', 'demonitization': 'demonetization', 'demonetisation': 'demonetization'}
def _get_mispell(mispell_dict):
mispell_re = re.compile('(%s)' % '|'.join(mispell_dict.keys()))
return mispell_dict, mispell_re
mispellings, mispellings_re = _get_mispell(mispell_dict)
def replace_typical_misspell(text):
def replace(match):
return mispellings[match.group(0)]
return mispellings_re.sub(replace, text )<feature_engineering> | print_valid_params("'random_state': 42, 'n_estimators': 30, 'min_samples_split': 7, 'min_samples_leaf': 1, 'max_features': 'sqrt', 'max_depth': None, 'bootstrap': False" ) | Titanic - Machine Learning from Disaster |
13,420,831 | def add_features(df):
df['question_text'] = df['question_text'].progress_apply(lambda x:str(x))
df['total_length'] = df['question_text'].progress_apply(len)
df['capitals'] = df['question_text'].progress_apply(lambda comment: sum(1 for c in comment if c.isupper()))
df['caps_vs_length'] = df.progress_apply(lambda row: float(row['capitals'])/float(row['total_length']),
axis=1)
df['num_words'] = df.question_text.str.count('\S+')
df['num_unique_words'] = df['question_text'].progress_apply(lambda comment: len(set(w for w in comment.split())))
df['words_vs_unique'] = df['num_unique_words'] / df['num_words']
return df
def load_and_prec() :
train_df = pd.read_csv(".. /input/train.csv")
test_df = pd.read_csv(".. /input/test.csv")
print("Train shape : ",train_df.shape)
print("Test shape : ",test_df.shape)
train_df["question_text"] = train_df["question_text"].progress_apply(lambda x: clean_text(x))
test_df["question_text"] = test_df["question_text"].apply(lambda x: clean_text(x))
train_df["question_text"] = train_df["question_text"].progress_apply(lambda x: clean_numbers(x))
test_df["question_text"] = test_df["question_text"].apply(lambda x: clean_numbers(x))
train_df["question_text"] = train_df["question_text"].progress_apply(lambda x: replace_typical_misspell(x))
test_df["question_text"] = test_df["question_text"].apply(lambda x: replace_typical_misspell(x))
train = add_features(train_df)
test = add_features(test_df)
train_df["question_text"] = train_df["question_text"].apply(lambda x: x.lower())
test_df["question_text"] = test_df["question_text"].apply(lambda x: x.lower())
train_X = train_df["question_text"].fillna("_
test_X = test_df["question_text"].fillna("_
features = train[['caps_vs_length', 'words_vs_unique']].fillna(0)
test_features = test[['caps_vs_length', 'words_vs_unique']].fillna(0)
ss = StandardScaler()
ss.fit(np.vstack(( features, test_features)))
features = ss.transform(features)
test_features = ss.transform(test_features)
tokenizer = Tokenizer(num_words=max_features)
tokenizer.fit_on_texts(list(train_X))
train_X = tokenizer.texts_to_sequences(train_X)
test_X = tokenizer.texts_to_sequences(test_X)
train_X = pad_sequences(train_X, maxlen=maxlen)
test_X = pad_sequences(test_X, maxlen=maxlen)
train_y = train_df['target'].values
np.random.seed(SEED)
trn_idx = np.random.permutation(len(train_X))
train_X = train_X[trn_idx]
train_y = train_y[trn_idx]
features = features[trn_idx]
return train_X, test_X, train_y, features, test_features, tokenizer.word_index
<train_model> | tuned_RFC = RandomForestClassifier(random_state= 42, n_estimators= 30, min_samples_split= 7, min_samples_leaf= 1, max_features= 'sqrt', max_depth= None, bootstrap= False)
get_model_accuracy(tuned_RFC ) | Titanic - Machine Learning from Disaster |
13,420,831 | x_train, x_test, y_train, features, test_features, word_index = load_and_prec()
<save_model> | param_grid = {
'random_state': [42],
'n_estimators': [100, 300],
'learning_rate': [.1,.3, 1],
'max_depth': [1, 2, 3, 10],
'min_samples_split': [.1,.3, 1, 3, 10],
'min_samples_leaf': [.1,.3, 1, 3]
}
clf_GB = GridSearchCV(GB, param_grid=param_grid, cv=5, verbose=True, n_jobs=-1)
best_clf_GB = clf_GB.fit(X_train_scaled, y_train)
clf_performance(best_clf_GB ) | Titanic - Machine Learning from Disaster |
13,420,831 | np.save("x_train",x_train)
np.save("x_test",x_test)
np.save("y_train",y_train)
np.save("features",features)
np.save("test_features",test_features)
np.save("word_index.npy",word_index )<load_pretrained> | print_valid_params("'learning_rate': 0.1, 'max_depth': 3, 'min_samples_leaf': 3, 'min_samples_split': 0.1, 'n_estimators': 300, 'random_state': 42" ) | Titanic - Machine Learning from Disaster |
13,420,831 | x_train = np.load("x_train.npy")
x_test = np.load("x_test.npy")
y_train = np.load("y_train.npy")
features = np.load("features.npy")
test_features = np.load("test_features.npy")
word_index = np.load("word_index.npy" ).item()<normalization> | tuned_GB = GradientBoostingClassifier(learning_rate= 0.1, max_depth= 3, min_samples_leaf= 3, min_samples_split= 0.1, n_estimators= 300, random_state= 42)
get_model_accuracy(tuned_GB ) | Titanic - Machine Learning from Disaster |
13,420,831 | seed_everything()
glove_embeddings = load_glove(word_index)
paragram_embeddings = load_para(word_index)
fasttext_embeddings = load_fasttext(word_index)
embedding_matrix = np.mean([glove_embeddings, paragram_embeddings, fasttext_embeddings], axis=0)
del glove_embeddings, paragram_embeddings, fasttext_embeddings
gc.collect()
np.shape(embedding_matrix )<split> | params = {
'weights': [[1, 1, 1], [1, 1, 2], [1, 2, 1], [2, 1, 1], [1, 2, 2], [2, 1, 2], [2, 2, 1]]
}
vote_weight = GridSearchCV(voting_clf_best_3, param_grid=params, cv=5, verbose=True, n_jobs=-1)
best_clf_weight = vote_weight.fit(X_train_scaled, y_train)
clf_performance(best_clf_weight ) | Titanic - Machine Learning from Disaster |
13,420,831 | splits = list(StratifiedKFold(n_splits=n_splits, shuffle=True, random_state=SEED ).split(x_train, y_train))
splits[:3]<choose_model_class> | print_valid_params("'weights': [1, 1, 2]" ) | Titanic - Machine Learning from Disaster |
13,420,831 | class CyclicLR(object):
def __init__(self, optimizer, base_lr=1e-3, max_lr=6e-3,
step_size=2000, mode='triangular', gamma=1.,
scale_fn=None, scale_mode='cycle', last_batch_iteration=-1):
if not isinstance(optimizer, Optimizer):
raise TypeError('{} is not an Optimizer'.format(
type(optimizer ).__name__))
self.optimizer = optimizer
if isinstance(base_lr, list)or isinstance(base_lr, tuple):
if len(base_lr)!= len(optimizer.param_groups):
raise ValueError("expected {} base_lr, got {}".format(
len(optimizer.param_groups), len(base_lr)))
self.base_lrs = list(base_lr)
else:
self.base_lrs = [base_lr] * len(optimizer.param_groups)
if isinstance(max_lr, list)or isinstance(max_lr, tuple):
if len(max_lr)!= len(optimizer.param_groups):
raise ValueError("expected {} max_lr, got {}".format(
len(optimizer.param_groups), len(max_lr)))
self.max_lrs = list(max_lr)
else:
self.max_lrs = [max_lr] * len(optimizer.param_groups)
self.step_size = step_size
if mode not in ['triangular', 'triangular2', 'exp_range'] \
and scale_fn is None:
raise ValueError('mode is invalid and scale_fn is None')
self.mode = mode
self.gamma = gamma
if scale_fn is None:
if self.mode == 'triangular':
self.scale_fn = self._triangular_scale_fn
self.scale_mode = 'cycle'
elif self.mode == 'triangular2':
self.scale_fn = self._triangular2_scale_fn
self.scale_mode = 'cycle'
elif self.mode == 'exp_range':
self.scale_fn = self._exp_range_scale_fn
self.scale_mode = 'iterations'
else:
self.scale_fn = scale_fn
self.scale_mode = scale_mode
self.batch_step(last_batch_iteration + 1)
self.last_batch_iteration = last_batch_iteration
def batch_step(self, batch_iteration=None):
if batch_iteration is None:
batch_iteration = self.last_batch_iteration + 1
self.last_batch_iteration = batch_iteration
for param_group, lr in zip(self.optimizer.param_groups, self.get_lr()):
param_group['lr'] = lr
def _triangular_scale_fn(self, x):
return 1.
def _triangular2_scale_fn(self, x):
return 1 /(2.**(x - 1))
def _exp_range_scale_fn(self, x):
return self.gamma**(x)
def get_lr(self):
step_size = float(self.step_size)
cycle = np.floor(1 + self.last_batch_iteration /(2 * step_size))
x = np.abs(self.last_batch_iteration / step_size - 2 * cycle + 1)
lrs = []
param_lrs = zip(self.optimizer.param_groups, self.base_lrs, self.max_lrs)
for param_group, base_lr, max_lr in param_lrs:
base_height =(max_lr - base_lr)* np.maximum(0,(1 - x))
if self.scale_mode == 'cycle':
lr = base_lr + base_height * self.scale_fn(cycle)
else:
lr = base_lr + base_height * self.scale_fn(self.last_batch_iteration)
lrs.append(lr)
return lrs<choose_model_class> | weighted_voting_clf_best_3 = VotingClassifier(
estimators=[('SVC', SVC),('RFC', RFC),('KNN', KNN)],
voting='soft',
weights= [1, 1, 2]
)
get_model_accuracy(weighted_voting_clf_best_3 ) | Titanic - Machine Learning from Disaster |
13,420,831 | embedding_dim = 300
embedding_path = '.. /save/embedding_matrix.npy'
use_pretrained_embedding = True
hidden_size = 60
gru_len = hidden_size
Routings = 4
Num_capsule = 5
Dim_capsule = 5
dropout_p = 0.25
rate_drop_dense = 0.28
LR = 0.001
T_epsilon = 1e-7
num_classes = 30
class Embed_Layer(nn.Module):
def __init__(self, embedding_matrix=None, vocab_size=None, embedding_dim=300):
super(Embed_Layer, self ).__init__()
self.encoder = nn.Embedding(vocab_size + 1, embedding_dim)
if use_pretrained_embedding:
self.encoder.weight.data.copy_(t.from_numpy(embedding_matrix))
def forward(self, x, dropout_p=0.25):
return nn.Dropout(p=dropout_p )(self.encoder(x))
class GRU_Layer(nn.Module):
def __init__(self):
super(GRU_Layer, self ).__init__()
self.gru = nn.GRU(input_size=300,
hidden_size=gru_len,
bidirectional=True)
def init_weights(self):
ih =(param.data for name, param in self.named_parameters() if 'weight_ih' in name)
hh =(param.data for name, param in self.named_parameters() if 'weight_hh' in name)
b =(param.data for name, param in self.named_parameters() if 'bias' in name)
for k in ih:
nn.init.xavier_uniform_(k)
for k in hh:
nn.init.orthogonal_(k)
for k in b:
nn.init.constant_(k, 0)
def forward(self, x):
return self.gru(x)
class Caps_Layer(nn.Module):
def __init__(self, input_dim_capsule=gru_len * 2, num_capsule=Num_capsule, dim_capsule=Dim_capsule, \
routings=Routings, kernel_size=(9, 1), share_weights=True,
activation='default', **kwargs):
super(Caps_Layer, self ).__init__(**kwargs)
self.num_capsule = num_capsule
self.dim_capsule = dim_capsule
self.routings = routings
self.kernel_size = kernel_size
self.share_weights = share_weights
if activation == 'default':
self.activation = self.squash
else:
self.activation = nn.ReLU(inplace=True)
if self.share_weights:
self.W = nn.Parameter(
nn.init.xavier_normal_(t.empty(1, input_dim_capsule, self.num_capsule * self.dim_capsule)))
else:
self.W = nn.Parameter(
t.randn(BATCH_SIZE, input_dim_capsule, self.num_capsule * self.dim_capsule))
def forward(self, x):
if self.share_weights:
u_hat_vecs = t.matmul(x, self.W)
else:
print('add later')
batch_size = x.size(0)
input_num_capsule = x.size(1)
u_hat_vecs = u_hat_vecs.view(( batch_size, input_num_capsule,
self.num_capsule, self.dim_capsule))
u_hat_vecs = u_hat_vecs.permute(0, 2, 1, 3)
b = t.zeros_like(u_hat_vecs[:, :, :, 0])
for i in range(self.routings):
b = b.permute(0, 2, 1)
c = F.softmax(b, dim=2)
c = c.permute(0, 2, 1)
b = b.permute(0, 2, 1)
outputs = self.activation(t.einsum('bij,bijk->bik',(c, u_hat_vecs)))
if i < self.routings - 1:
b = t.einsum('bik,bijk->bij',(outputs, u_hat_vecs))
return outputs
def squash(self, x, axis=-1):
s_squared_norm =(x ** 2 ).sum(axis, keepdim=True)
scale = t.sqrt(s_squared_norm + T_epsilon)
return x / scale
class Capsule_Main(nn.Module):
def __init__(self, embedding_matrix=None, vocab_size=None):
super(Capsule_Main, self ).__init__()
self.embed_layer = Embed_Layer(embedding_matrix, vocab_size)
self.gru_layer = GRU_Layer()
self.gru_layer.init_weights()
self.caps_layer = Caps_Layer()
self.dense_layer = Dense_Layer()
def forward(self, content):
content1 = self.embed_layer(content)
content2, _ = self.gru_layer(
content1)
content3 = self.caps_layer(content2)
output = self.dense_layer(content3)
return output
<normalization> | def submission_to_csv(y_preds, filename='submission.csv'):
submission = {'PassengerId': test_data.PassengerId, 'survived': y_preds}
submission_df = pd.DataFrame(data=submission)
submission_csv = submission_df.to_csv(filename, index=False)
return(submission_csv ) | Titanic - Machine Learning from Disaster |
13,420,831 | class Attention(nn.Module):
def __init__(self, feature_dim, step_dim, bias=True, **kwargs):
super(Attention, self ).__init__(**kwargs)
self.supports_masking = True
self.bias = bias
self.feature_dim = feature_dim
self.step_dim = step_dim
self.features_dim = 0
weight = torch.zeros(feature_dim, 1)
nn.init.xavier_uniform_(weight)
self.weight = nn.Parameter(weight)
if bias:
self.b = nn.Parameter(torch.zeros(step_dim))
def forward(self, x, mask=None):
feature_dim = self.feature_dim
step_dim = self.step_dim
eij = torch.mm(
x.contiguous().view(-1, feature_dim),
self.weight
).view(-1, step_dim)
if self.bias:
eij = eij + self.b
eij = torch.tanh(eij)
a = torch.exp(eij)
if mask is not None:
a = a * mask
a = a / torch.sum(a, 1, keepdim=True)+ 1e-10
weighted_input = x * torch.unsqueeze(a, -1)
return torch.sum(weighted_input, 1)
class NeuralNet(nn.Module):
def __init__(self):
super(NeuralNet, self ).__init__()
fc_layer = 16
fc_layer1 = 16
self.embedding = nn.Embedding(max_features, embed_size)
self.embedding.weight = nn.Parameter(torch.tensor(embedding_matrix, dtype=torch.float32))
self.embedding.weight.requires_grad = False
self.embedding_dropout = nn.Dropout2d(0.1)
self.lstm = nn.LSTM(embed_size, hidden_size, bidirectional=True, batch_first=True)
self.gru = nn.GRU(hidden_size * 2, hidden_size, bidirectional=True, batch_first=True)
self.lstm2 = nn.LSTM(hidden_size * 2, hidden_size, bidirectional=True, batch_first=True)
self.lstm_attention = Attention(hidden_size * 2, maxlen)
self.gru_attention = Attention(hidden_size * 2, maxlen)
self.bn = nn.BatchNorm1d(16, momentum=0.5)
self.linear = nn.Linear(hidden_size*8+3, fc_layer1)
self.relu = nn.ReLU()
self.dropout = nn.Dropout(0.1)
self.fc = nn.Linear(fc_layer**2,fc_layer)
self.out = nn.Linear(fc_layer, 1)
self.lincaps = nn.Linear(Num_capsule * Dim_capsule, 1)
self.caps_layer = Caps_Layer()
def forward(self, x):
h_embedding = self.embedding(x[0])
h_embedding = torch.squeeze(
self.embedding_dropout(torch.unsqueeze(h_embedding, 0)))
h_lstm, _ = self.lstm(h_embedding)
h_gru, _ = self.gru(h_lstm)
content3 = self.caps_layer(h_gru)
content3 = self.dropout(content3)
batch_size = content3.size(0)
content3 = content3.view(batch_size, -1)
content3 = self.relu(self.lincaps(content3))
h_lstm_atten = self.lstm_attention(h_lstm)
h_gru_atten = self.gru_attention(h_gru)
avg_pool = torch.mean(h_gru, 1)
max_pool, _ = torch.max(h_gru, 1)
f = torch.tensor(x[1], dtype=torch.float ).cuda()
conc = torch.cat(( h_lstm_atten, h_gru_atten,content3, avg_pool, max_pool,f), 1)
conc = self.relu(self.linear(conc))
conc = self.bn(conc)
conc = self.dropout(conc)
out = self.out(conc)
return out<categorify> | tuned_RFC.fit(X_train_scaled, y_train)
tuned_RFC_preds = tuned_RFC.predict(X_test_scaled)
submission_to_csv(tuned_RFC_preds, 'RFC_submission.csv' ) | Titanic - Machine Learning from Disaster |
13,420,831 | class MyDataset(Dataset):
def __init__(self,dataset):
self.dataset = dataset
def __getitem__(self, index):
data, target = self.dataset[index]
return data, target, index
def __len__(self):
return len(self.dataset )<compute_train_metric> | tuned_GB.fit(X_train_scaled, y_train)
tuned_GB_preds = tuned_GB.predict(X_test_scaled)
submission_to_csv(tuned_GB_preds, 'GB_clf_submission.csv' ) | Titanic - Machine Learning from Disaster |
13,420,831 | class FocalLoss(nn.Module):
def __init__(self, alpha=1, gamma=2, logits=True, reduction='elementwise_mean'):
super(FocalLoss, self ).__init__()
self.alpha = alpha
self.gamma = gamma
self.logits = logits
self.reduction = reduction
def forward(self, inputs, targets):
if self.logits:
BCE_loss = F.binary_cross_entropy_with_logits(inputs, targets, reduction='none')
else:
BCE_loss = F.binary_cross_entropy(inputs, targets, reduction='none')
pt = torch.exp(-BCE_loss)
F_loss = self.alpha *(1-pt)**self.gamma * BCE_loss
if self.reduction is None:
return F_loss
else:
return torch.mean(F_loss )<define_variables> | weighted_voting_clf_best_3.fit(X_train_scaled, y_train)
weighted_voting_clf_best_3_preds = weighted_voting_clf_best_3.predict(X_test_scaled)
submission_to_csv(weighted_voting_clf_best_3_preds, 'soft_voting_clf_submission.csv' ) | Titanic - Machine Learning from Disaster |
14,344,676 | def sigmoid(x):
return 1 /(1 + np.exp(-x))
train_preds = np.zeros(( len(x_train)))
test_preds = np.zeros(( len(df_test)))
seed_everything()
x_test_cuda = torch.tensor(x_test, dtype=torch.long ).cuda()
test = torch.utils.data.TensorDataset(x_test_cuda)
test_loader = torch.utils.data.DataLoader(test, batch_size=batch_size, shuffle=False)
avg_losses_f = []
avg_val_losses_f = []<data_type_conversions> | train = pd.read_csv("/kaggle/input/titanic/train.csv")
test = pd.read_csv("/kaggle/input/titanic/test.csv" ) | Titanic - Machine Learning from Disaster |
14,344,676 | for i,(train_idx, valid_idx)in enumerate(splits):
x_train = np.array(x_train)
y_train = np.array(y_train)
features = np.array(features)
x_train_fold = torch.tensor(x_train[train_idx.astype(int)], dtype=torch.long ).cuda()
y_train_fold = torch.tensor(y_train[train_idx.astype(int), np.newaxis], dtype=torch.float32 ).cuda()
kfold_X_features = features[train_idx.astype(int)]
kfold_X_valid_features = features[valid_idx.astype(int)]
x_val_fold = torch.tensor(x_train[valid_idx.astype(int)], dtype=torch.long ).cuda()
y_val_fold = torch.tensor(y_train[valid_idx.astype(int), np.newaxis], dtype=torch.float32 ).cuda()
model = NeuralNet()
model.cuda()
gamma = 1 + i/16
loss_fn = FocalLoss(gamma=gamma)
step_size = 300
base_lr, max_lr = 0.001, 0.003
optimizer = torch.optim.Adam(filter(lambda p: p.requires_grad, model.parameters()),
lr=max_lr)
scheduler = CyclicLR(optimizer, base_lr=base_lr, max_lr=max_lr,
step_size=step_size, mode='exp_range',
gamma=0.99994)
train = torch.utils.data.TensorDataset(x_train_fold, y_train_fold)
valid = torch.utils.data.TensorDataset(x_val_fold, y_val_fold)
train = MyDataset(train)
valid = MyDataset(valid)
train_loader = torch.utils.data.DataLoader(train, batch_size=batch_size, shuffle=True)
valid_loader = torch.utils.data.DataLoader(valid, batch_size=batch_size, shuffle=False)
print(f'Fold {i + 1}')
for epoch in range(n_epochs):
start_time = time.time()
model.train()
avg_loss = 0.
for i,(x_batch, y_batch, index)in enumerate(train_loader):
f = kfold_X_features[index]
y_pred = model([x_batch,f])
if scheduler:
scheduler.batch_step()
loss = loss_fn(y_pred, y_batch)
optimizer.zero_grad()
loss.backward()
optimizer.step()
avg_loss += loss.item() / len(train_loader)
model.eval()
valid_preds_fold = np.zeros(( x_val_fold.size(0)))
test_preds_fold = np.zeros(( len(df_test)))
avg_val_loss = 0.
for i,(x_batch, y_batch, index)in enumerate(valid_loader):
f = kfold_X_valid_features[index]
y_pred = model([x_batch,f] ).detach()
avg_val_loss += loss_fn(y_pred, y_batch ).item() / len(valid_loader)
valid_preds_fold[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
elapsed_time = time.time() - start_time
print('Epoch {}/{} \t loss={:.4f} \t val_loss={:.4f} \t time={:.2f}s'.format(
epoch + 1, n_epochs, avg_loss, avg_val_loss, elapsed_time))
avg_losses_f.append(avg_loss)
avg_val_losses_f.append(avg_val_loss)
for i,(x_batch,)in enumerate(test_loader):
f = test_features[i * batch_size:(i+1)* batch_size]
y_pred = model([x_batch,f] ).detach()
test_preds_fold[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
train_preds[valid_idx] = valid_preds_fold
test_preds += test_preds_fold / len(splits)
print('All \t loss={:.4f} \t val_loss={:.4f} \t '.format(np.average(avg_losses_f),np.average(avg_val_losses_f)))
<compute_test_metric> | train.groupby('Pclass' ).mean() ['Survived']*100 | Titanic - Machine Learning from Disaster |
14,344,676 | def bestThresshold(y_train,train_preds):
tmp = [0,0,0]
delta = 0
for tmp[0] in tqdm(np.arange(0.3, 0.601, 0.001)) :
tmp[1] = f1_score(y_train, np.array(train_preds)>tmp[0])
if tmp[1] > tmp[2]:
delta = tmp[0]
tmp[2] = tmp[1]
print('best threshold is {:.4f} with F1 score: {:.4f}'.format(delta, tmp[2]))
return delta
delta = bestThresshold(y_train,train_preds )<save_to_csv> | train.isna().sum() | Titanic - Machine Learning from Disaster |
14,344,676 | submission = df_test[['qid']].copy()
submission['prediction'] =(test_preds > delta ).astype(int)
submission.to_csv('submission.csv', index=False )<import_modules> | print(train.isna().sum() ,'
', test.isna().sum())
| Titanic - Machine Learning from Disaster |
14,344,676 | import os
import time
import numpy as np
import pandas as pd
from tqdm import tqdm
import math
from sklearn.model_selection import train_test_split
from sklearn import metrics
from keras.preprocessing.text import Tokenizer
from keras.preprocessing.sequence import pad_sequences
from keras.layers import Dense, Input, LSTM, Embedding, Dropout, Activation, CuDNNGRU, Conv1D
from keras.layers import Bidirectional, GlobalMaxPool1D
from keras.models import Model
from keras import initializers, regularizers, constraints, optimizers, layers<load_from_csv> | train[train['Embarked'].isna() == True] | Titanic - Machine Learning from Disaster |
14,344,676 | train_df = pd.read_csv(".. /input/train.csv")
test_df = pd.read_csv(".. /input/test.csv")
print("Train shape : ",train_df.shape)
print("Test shape : ",test_df.shape )<split> | train['Embarked'] = train['Embarked'].fillna(value='S' ) | Titanic - Machine Learning from Disaster |
14,344,676 | train_df, val_df = train_test_split(train_df, test_size=0.1, random_state=2018)
embed_size = 300
max_features = 50000
maxlen = 100
train_X = train_df["question_text"].fillna("_na_" ).values
val_X = val_df["question_text"].fillna("_na_" ).values
test_X = test_df["question_text"].fillna("_na_" ).values
tokenizer = Tokenizer(num_words=max_features)
tokenizer.fit_on_texts(list(train_X))
train_X = tokenizer.texts_to_sequences(train_X)
val_X = tokenizer.texts_to_sequences(val_X)
test_X = tokenizer.texts_to_sequences(test_X)
train_X = pad_sequences(train_X, maxlen=maxlen)
val_X = pad_sequences(val_X, maxlen=maxlen)
test_X = pad_sequences(test_X, maxlen=maxlen)
train_y = train_df['target'].values
val_y = val_df['target'].values<statistical_test> | train = pd.get_dummies(train, columns=['Embarked'], drop_first=True)
train = pd.get_dummies(train, columns=['Sex'], drop_first=True)
test = pd.get_dummies(test, columns=['Embarked'], drop_first=True)
test = pd.get_dummies(test, columns=['Sex'], drop_first=True)
| Titanic - Machine Learning from Disaster |
14,344,676 | EMBEDDING_FILE = '.. /input/embeddings/glove.840B.300d/glove.840B.300d.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE))
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = all_embs.mean() , all_embs.std()
embed_size = all_embs.shape[1]
word_index = tokenizer.word_index
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
inp = Input(shape=(maxlen,))
x = Embedding(max_features, embed_size, weights=[embedding_matrix] )(inp)
x = Bidirectional(CuDNNGRU(64, return_sequences=True))(x)
x = GlobalMaxPool1D()(x)
x = Dense(16, activation="relu" )(x)
x = Dropout(0.1 )(x)
x = Dense(1, activation="sigmoid" )(x)
model = Model(inputs=inp, outputs=x)
model.compile(loss='binary_crossentropy', optimizer='adam', metrics=['accuracy'])
print(model.summary() )<train_model> | train.drop(['Name','Ticket'],axis=1,inplace=True)
test.drop(['Name','Ticket'],axis=1,inplace=True ) | Titanic - Machine Learning from Disaster |
14,344,676 | model.fit(train_X, train_y, batch_size=512, epochs=2, validation_data=(val_X, val_y))<predict_on_test> | train.Cabin.isna().sum() /len(train.Cabin)*100 | Titanic - Machine Learning from Disaster |
14,344,676 | pred_glove_val_y = model.predict([val_X], batch_size=1024, verbose=1)
for thresh in np.arange(0.1, 0.501, 0.01):
thresh = np.round(thresh, 2)
print("F1 score at threshold {0} is {1}".format(thresh, metrics.f1_score(val_y,(pred_glove_val_y>thresh ).astype(int))))<predict_on_test> | train = train.drop('Cabin',axis=1)
test = test.drop('Cabin',axis=1 ) | Titanic - Machine Learning from Disaster |
14,344,676 | pred_glove_test_y = model.predict([test_X], batch_size=1024, verbose=1 )<set_options> | def imputeAge(cols):
Age = cols[0]
Pclass = cols[1]
if(pd.isnull(Age)) :
if(Pclass==1):
return 37
if Pclass==2:
return 29
else:
return 24
else:
return Age | Titanic - Machine Learning from Disaster |
14,344,676 | del word_index, embeddings_index, all_embs, embedding_matrix, model, inp, x
time.sleep(10 )<statistical_test> | train['Age']= train[['Age','Pclass']].apply(imputeAge,axis=1)
test['Age']= test[['Age','Pclass']].apply(imputeAge,axis=1 ) | Titanic - Machine Learning from Disaster |
14,344,676 | EMBEDDING_FILE = '.. /input/embeddings/wiki-news-300d-1M/wiki-news-300d-1M.vec'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE)if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = all_embs.mean() , all_embs.std()
embed_size = all_embs.shape[1]
word_index = tokenizer.word_index
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
inp = Input(shape=(maxlen,))
x = Embedding(max_features, embed_size, weights=[embedding_matrix] )(inp)
x = Bidirectional(CuDNNGRU(64, return_sequences=True))(x)
x = GlobalMaxPool1D()(x)
x = Dense(16, activation="relu" )(x)
x = Dropout(0.1 )(x)
x = Dense(1, activation="sigmoid" )(x)
model = Model(inputs=inp, outputs=x)
model.compile(loss='binary_crossentropy', optimizer='adam', metrics=['accuracy'] )<train_model> | test['Fare'] = test['Fare'].fillna(( test.Fare.mean()))
train['Fare'] = train['Fare'].fillna(( train.Fare.mean())) | Titanic - Machine Learning from Disaster |
14,344,676 | model.fit(train_X, train_y, batch_size=512, epochs=2, validation_data=(val_X, val_y))<predict_on_test> | Titanic - Machine Learning from Disaster | |
14,344,676 | pred_fasttext_val_y = model.predict([val_X], batch_size=1024, verbose=1)
for thresh in np.arange(0.1, 0.501, 0.01):
thresh = np.round(thresh, 2)
print("F1 score at threshold {0} is {1}".format(thresh, metrics.f1_score(val_y,(pred_fasttext_val_y>thresh ).astype(int))))<predict_on_test> | y = train['Survived']
features = ['PassengerId','Pclass','Age','SibSp','Sex_male','Parch','Embarked_Q','Embarked_S','Fare']
X = train[features]
X_test = test[features]
model = RandomForestClassifier(n_estimators=100,max_depth=5,random_state=1)
model.fit(X,y)
| Titanic - Machine Learning from Disaster |
14,344,676 | pred_fasttext_test_y = model.predict([test_X], batch_size=1024, verbose=1 )<set_options> | predictions = model.predict(X_test ) | Titanic - Machine Learning from Disaster |
14,344,676 | del word_index, embeddings_index, all_embs, embedding_matrix, model, inp, x
time.sleep(10 )<statistical_test> | output = pd.DataFrame({'PassengerId': X_test.PassengerId, 'Survived': predictions})
output.to_csv('my_submission.csv', index=False)
print("Your submission was successfully saved!" ) | Titanic - Machine Learning from Disaster |
14,646,784 | EMBEDDING_FILE = '.. /input/embeddings/paragram_300_sl999/paragram_300_sl999.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE, encoding="utf8", errors='ignore')if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = all_embs.mean() , all_embs.std()
embed_size = all_embs.shape[1]
word_index = tokenizer.word_index
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
inp = Input(shape=(maxlen,))
x = Embedding(max_features, embed_size, weights=[embedding_matrix] )(inp)
x = Bidirectional(CuDNNGRU(64, return_sequences=True))(x)
x = GlobalMaxPool1D()(x)
x = Dense(16, activation="relu" )(x)
x = Dropout(0.1 )(x)
x = Dense(1, activation="sigmoid" )(x)
model = Model(inputs=inp, outputs=x)
model.compile(loss='binary_crossentropy', optimizer='adam', metrics=['accuracy'] )<train_model> | train_data = pd.read_csv("/kaggle/input/titanic/train.csv")
train_data.head() | Titanic - Machine Learning from Disaster |
14,646,784 | model.fit(train_X, train_y, batch_size=512, epochs=2, validation_data=(val_X, val_y))<predict_on_test> | test_data = pd.read_csv("/kaggle/input/titanic/test.csv")
test_data.head() | Titanic - Machine Learning from Disaster |
14,646,784 | pred_paragram_val_y = model.predict([val_X], batch_size=1024, verbose=1)
for thresh in np.arange(0.1, 0.501, 0.01):
thresh = np.round(thresh, 2)
print("F1 score at threshold {0} is {1}".format(thresh, metrics.f1_score(val_y,(pred_paragram_val_y>thresh ).astype(int))))<predict_on_test> | train_data.groupby('Sex' ).Survived.mean() | Titanic - Machine Learning from Disaster |
14,646,784 | pred_paragram_test_y = model.predict([test_X], batch_size=1024, verbose=1 )<set_options> | train_data.groupby('Pclass' ).Survived.mean() | Titanic - Machine Learning from Disaster |
14,646,784 | del word_index, embeddings_index, all_embs, embedding_matrix, model, inp, x
time.sleep(10 )<compute_test_metric> | train_data.isnull() | Titanic - Machine Learning from Disaster |
14,646,784 | pred_val_y = 0.30*pred_glove_val_y + 0.35*pred_fasttext_val_y + 0.35*pred_paragram_val_y
for thresh in np.arange(0.1, 0.501, 0.01):
thresh = np.round(thresh, 2)
print("F1 score at threshold {0} is {1}".format(thresh, metrics.f1_score(val_y,(pred_val_y>thresh ).astype(int))))<save_to_csv> | train_data.isnull().sum() | Titanic - Machine Learning from Disaster |
14,646,784 | pred_test_y = 0.30*pred_glove_test_y + 0.35*pred_fasttext_test_y + 0.35*pred_paragram_test_y
pred_test_y =(pred_test_y>0.36 ).astype(int)
out_df = pd.DataFrame({"qid":test_df["qid"].values})
out_df['prediction'] = pred_test_y
out_df.to_csv("submission.csv", index=False )<import_modules> | train_data.drop(["Name","Cabin"], axis=1, inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | tqdm.pandas(desc='Progress')
<define_variables> | train_data['Age'].fillna(value=train_data['Age'].mean() , inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | embed_size = 300
max_features = 120000
maxlen = 70
batch_size = 512
n_epochs = 5
n_splits = 5
SEED = 1029<set_options> | train_data['Embarked'] = train_data['Embarked'].fillna(value=train_data['Embarked'].mode() [0] ) | Titanic - Machine Learning from Disaster |
14,646,784 | def seed_everything(seed=1029):
random.seed(seed)
os.environ['PYTHONHASHSEED'] = str(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
torch.backends.cudnn.deterministic = True
seed_everything()<features_selection> | train_data.isnull().sum() | Titanic - Machine Learning from Disaster |
14,646,784 | def load_glove(word_index):
EMBEDDING_FILE = '.. /input/embeddings/glove.840B.300d/glove.840B.300d.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')[:300]
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE))
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = -0.005838499,0.48782197
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix
def load_fasttext(word_index):
EMBEDDING_FILE = '.. /input/embeddings/wiki-news-300d-1M/wiki-news-300d-1M.vec'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE)if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = all_embs.mean() , all_embs.std()
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix
def load_para(word_index):
EMBEDDING_FILE = '.. /input/embeddings/paragram_300_sl999/paragram_300_sl999.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE, encoding="utf8", errors='ignore')if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = -0.0053247833,0.49346462
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix<load_from_csv> | train_data['Sex'] = train_data['Sex'].replace(['male', 'female'],[1,0])
train_data.rename(columns = {'Sex' : 'gender'}, inplace = True ) | Titanic - Machine Learning from Disaster |
14,646,784 | df_train = pd.read_csv(".. /input/train.csv")
df_test = pd.read_csv(".. /input/test.csv")
df = pd.concat([df_train ,df_test],sort=True )<feature_engineering> | train_data['Embarked'] = train_data['Embarked'].replace(['S','C','Q'],[0,1,2])
train_data.rename(columns = {'Embarked' : 'port'}, inplace = True ) | Titanic - Machine Learning from Disaster |
14,646,784 | def build_vocab(texts):
sentences = texts.apply(lambda x: x.split() ).values
vocab = {}
for sentence in sentences:
for word in sentence:
try:
vocab[word] += 1
except KeyError:
vocab[word] = 1
return vocab
vocab = build_vocab(df['question_text'] )<define_variables> | train_data.rename(columns = {'Pclass' : 'passenger_cls'} ) | Titanic - Machine Learning from Disaster |
14,646,784 | sin = len(df_train[df_train["target"]==0])
insin = len(df_train[df_train["target"]==1])
persin =(sin/(sin+insin)) *100
perinsin =(insin/(sin+insin)) *100
print("
print("<feature_engineering> | train_data['family_members'] = train_data['SibSp'] + train_data['Parch']
train_data.drop(['SibSp', 'Parch'], axis = 1, inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | def build_vocab(texts):
sentences = texts.apply(lambda x: x.split() ).values
vocab = {}
for sentence in sentences:
for word in sentence:
try:
vocab[word] += 1
except KeyError:
vocab[word] = 1
return vocab
def known_contractions(embed):
known = []
for contract in contraction_mapping:
if contract in embed:
known.append(contract)
return known
def clean_contractions(text, mapping):
specials = ["’", "‘", "´", "`"]
for s in specials:
text = text.replace(s, "'")
text = ' '.join([mapping[t] if t in mapping else t for t in text.split(" ")])
return text
def correct_spelling(x, dic):
for word in dic.keys() :
x = x.replace(word, dic[word])
return x
def unknown_punct(embed, punct):
unknown = ''
for p in punct:
if p not in embed:
unknown += p
unknown += ' '
return unknown
def clean_numbers(x):
x = re.sub('[0-9]{5,}', '
x = re.sub('[0-9]{4}', '
x = re.sub('[0-9]{3}', '
x = re.sub('[0-9]{2}', '
return x
def clean_special_chars(text, punct, mapping):
for p in mapping:
text = text.replace(p, mapping[p])
for p in punct:
text = text.replace(p, f' {p} ')
specials = {'\u200b': ' ', '…': '...', '\ufeff': '', 'करना': '', 'है': ''}
for s in specials:
text = text.replace(s, specials[s])
return text
def add_lower(embedding, vocab):
count = 0
for word in vocab:
if word in embedding and word.lower() not in embedding:
embedding[word.lower() ] = embedding[word]
count += 1
print(f"Added {count} words to embedding" )<define_variables> | train_data.loc[ train_data['Age'] <= 21, 'Age'] = 0
train_data.loc[(train_data['Age'] > 21)&(train_data['Age'] <= 34), 'Age'] = 1
train_data.loc[(train_data['Age'] > 34)&(train_data['Age'] <= 54), 'Age'] = 2
train_data.loc[(train_data['Age'] > 60)&(train_data['Age'] <= 75), 'Age'] = 3
train_data.loc[ train_data['Age'] > 75, 'Age'] ; | Titanic - Machine Learning from Disaster |
14,646,784 | puncts = [',', '.', '"', ':', ')', '(', '-', '!', '?', '|', ';', "'", '$', '&', '/', '[', ']', '>', '%', '=', '
'·', '_', '{', '}', '©', '^', '®', '`', '<', '→', '°', '€', '™', '›', '♥', '←', '×', '§', '″', '′', 'Â', '█', '½', 'à', '…',
'“', '★', '”', '–', '●', 'â', '►', '−', '¢', '²', '¬', '░', '¶', '↑', '±', '¿', '▾', '═', '¦', '║', '―', '¥', '▓', '—', '‹', '─',
'▒', '：', '¼', '⊕', '▼', '▪', '†', '■', '’', '▀', '¨', '▄', '♫', '☆', 'é', '¯', '♦', '¤', '▲', 'è', '¸', '¾', 'Ã', '⋅', '‘', '∞',
'∙', '）', '↓', '、', '│', '（', '»', '，', '♪', '╩', '╚', '³', '・', '╦', '╣', '╔', '╗', '▬', '❤', 'ï', 'Ø', '¹', '≤', '‡', '√', ]
def clean_text(x):
x = str(x)
for punct in puncts:
x = x.replace(punct, f' {punct} ')
return x
def clean_numbers(x):
x = re.sub('[0-9]{5,}', '
x = re.sub('[0-9]{4}', '
x = re.sub('[0-9]{3}', '
x = re.sub('[0-9]{2}', '
return x
mispell_dict = {"ain't": "is not", "aren't": "are not","can't": "cannot", "'cause": "because", "could've": "could have", "couldn't": "could not", "didn't": "did not", "doesn't": "does not", "don't": "do not", "hadn't": "had not", "hasn't": "has not", "haven't": "have not", "he'd": "he would","he'll": "he will", "he's": "he is", "how'd": "how did", "how'd'y": "how do you", "how'll": "how will", "how's": "how is", "I'd": "I would", "I'd've": "I would have", "I'll": "I will", "I'll've": "I will have","I'm": "I am", "I've": "I have", "i'd": "i would", "i'd've": "i would have", "i'll": "i will", "i'll've": "i will have","i'm": "i am", "i've": "i have", "isn't": "is not", "it'd": "it would", "it'd've": "it would have", "it'll": "it will", "it'll've": "it will have","it's": "it is", "let's": "let us", "ma'am": "madam", "mayn't": "may not", "might've": "might have","mightn't": "might not","mightn't've": "might not have", "must've": "must have", "mustn't": "must not", "mustn't've": "must not have", "needn't": "need not", "needn't've": "need not have","o'clock": "of the clock", "oughtn't": "ought not", "oughtn't've": "ought not have", "shan't": "shall not", "sha'n't": "shall not", "shan't've": "shall not have", "she'd": "she would", "she'd've": "she would have", "she'll": "she will", "she'll've": "she will have", "she's": "she is", "should've": "should have", "shouldn't": "should not", "shouldn't've": "should not have", "so've": "so have","so's": "so as", "this's": "this is","that'd": "that would", "that'd've": "that would have", "that's": "that is", "there'd": "there would", "there'd've": "there would have", "there's": "there is", "here's": "here is","they'd": "they would", "they'd've": "they would have", "they'll": "they will", "they'll've": "they will have", "they're": "they are", "they've": "they have", "to've": "to have", "wasn't": "was not", "we'd": "we would", "we'd've": "we would have", "we'll": "we will", "we'll've": "we will have", "we're": "we are", "we've": "we have", "weren't": "were not", "what'll": "what will", "what'll've": "what will have", "what're": "what are", "what's": "what is", "what've": "what have", "when's": "when is", "when've": "when have", "where'd": "where did", "where's": "where is", "where've": "where have", "who'll": "who will", "who'll've": "who will have", "who's": "who is", "who've": "who have", "why's": "why is", "why've": "why have", "will've": "will have", "won't": "will not", "won't've": "will not have", "would've": "would have", "wouldn't": "would not", "wouldn't've": "would not have", "y'all": "you all", "y'all'd": "you all would","y'all'd've": "you all would have","y'all're": "you all are","y'all've": "you all have","you'd": "you would", "you'd've": "you would have", "you'll": "you will", "you'll've": "you will have", "you're": "you are", "you've": "you have", 'colour': 'color', 'centre': 'center', 'favourite': 'favorite', 'travelling': 'traveling', 'counselling': 'counseling', 'theatre': 'theater', 'cancelled': 'canceled', 'labour': 'labor', 'organisation': 'organization', 'wwii': 'world war 2', 'citicise': 'criticize', 'youtu ': 'youtube ', 'Qoura': 'Quora', 'sallary': 'salary', 'Whta': 'What', 'narcisist': 'narcissist', 'howdo': 'how do', 'whatare': 'what are', 'howcan': 'how can', 'howmuch': 'how much', 'howmany': 'how many', 'whydo': 'why do', 'doI': 'do I', 'theBest': 'the best', 'howdoes': 'how does', 'mastrubation': 'masturbation', 'mastrubate': 'masturbate', "mastrubating": 'masturbating', 'pennis': 'penis', 'Etherium': 'Ethereum', 'narcissit': 'narcissist', 'bigdata': 'big data', '2k17': '2017', '2k18': '2018', 'qouta': 'quota', 'exboyfriend': 'ex boyfriend', 'airhostess': 'air hostess', "whst": 'what', 'watsapp': 'whatsapp', 'demonitisation': 'demonetization', 'demonitization': 'demonetization', 'demonetisation': 'demonetization'}
def _get_mispell(mispell_dict):
mispell_re = re.compile('(%s)' % '|'.join(mispell_dict.keys()))
return mispell_dict, mispell_re
mispellings, mispellings_re = _get_mispell(mispell_dict)
def replace_typical_misspell(text):
def replace(match):
return mispellings[match.group(0)]
return mispellings_re.sub(replace, text )<feature_engineering> | train_data.loc[ train_data['Fare'] <= 7.5, 'Fare'] = 0
train_data.loc[(train_data['Fare'] > 15)&(train_data['Fare'] <= 21.5), 'Fare'] = 1
train_data.loc[(train_data['Fare'] > 21.5)&(train_data['Age'] <= 29), 'Fare'] = 2
train_data.loc[(train_data['Fare'] > 29)&(train_data['Fare'] <= 36.5), 'Fare'] = 3
train_data.loc[ train_data['Fare'] > 36.5, 'Fare'] ; | Titanic - Machine Learning from Disaster |
14,646,784 | def add_features(df):
df['question_text'] = df['question_text'].progress_apply(lambda x:str(x))
df['total_length'] = df['question_text'].progress_apply(len)
df['capitals'] = df['question_text'].progress_apply(lambda comment: sum(1 for c in comment if c.isupper()))
df['caps_vs_length'] = df.progress_apply(lambda row: float(row['capitals'])/float(row['total_length']),
axis=1)
df['num_words'] = df.question_text.str.count('\S+')
df['num_unique_words'] = df['question_text'].progress_apply(lambda comment: len(set(w for w in comment.split())))
df['words_vs_unique'] = df['num_unique_words'] / df['num_words']
return df
def load_and_prec() :
train_df = pd.read_csv(".. /input/train.csv")
test_df = pd.read_csv(".. /input/test.csv")
print("Train shape : ",train_df.shape)
print("Test shape : ",test_df.shape)
train_df["question_text"] = train_df["question_text"].progress_apply(lambda x: clean_text(x))
test_df["question_text"] = test_df["question_text"].apply(lambda x: clean_text(x))
train_df["question_text"] = train_df["question_text"].progress_apply(lambda x: clean_numbers(x))
test_df["question_text"] = test_df["question_text"].apply(lambda x: clean_numbers(x))
train_df["question_text"] = train_df["question_text"].progress_apply(lambda x: replace_typical_misspell(x))
test_df["question_text"] = test_df["question_text"].apply(lambda x: replace_typical_misspell(x))
train = add_features(train_df)
test = add_features(test_df)
train_df["question_text"] = train_df["question_text"].apply(lambda x: x.lower())
test_df["question_text"] = test_df["question_text"].apply(lambda x: x.lower())
train_X = train_df["question_text"].fillna("_
test_X = test_df["question_text"].fillna("_
features = train[['caps_vs_length', 'words_vs_unique']].fillna(0)
test_features = test[['caps_vs_length', 'words_vs_unique']].fillna(0)
ss = StandardScaler()
ss.fit(np.vstack(( features, test_features)))
features = ss.transform(features)
test_features = ss.transform(test_features)
tokenizer = Tokenizer(num_words=max_features)
tokenizer.fit_on_texts(list(train_X))
train_X = tokenizer.texts_to_sequences(train_X)
test_X = tokenizer.texts_to_sequences(test_X)
train_X = pad_sequences(train_X, maxlen=maxlen)
test_X = pad_sequences(test_X, maxlen=maxlen)
train_y = train_df['target'].values
np.random.seed(SEED)
trn_idx = np.random.permutation(len(train_X))
train_X = train_X[trn_idx]
train_y = train_y[trn_idx]
features = features[trn_idx]
return train_X, test_X, train_y, features, test_features, tokenizer.word_index
<train_model> | train_data.drop(['Ticket'], axis = 1, inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | x_train, x_test, y_train, features, test_features, word_index = load_and_prec()
<save_model> | test_data.isnull().sum() | Titanic - Machine Learning from Disaster |
14,646,784 | np.save("x_train",x_train)
np.save("x_test",x_test)
np.save("y_train",y_train)
np.save("features",features)
np.save("test_features",test_features)
np.save("word_index.npy",word_index )<load_pretrained> | test_data.drop(['Name', 'Ticket','Cabin'], axis = 1, inplace = True ) | Titanic - Machine Learning from Disaster |
14,646,784 | x_train = np.load("x_train.npy")
x_test = np.load("x_test.npy")
y_train = np.load("y_train.npy")
features = np.load("features.npy")
test_features = np.load("test_features.npy")
word_index = np.load("word_index.npy" ).item()<normalization> | test_data['Age'].fillna(value=test_data['Age'].mean() , inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | seed_everything()
glove_embeddings = load_glove(word_index)
paragram_embeddings = load_para(word_index)
fasttext_embeddings = load_fasttext(word_index)
embedding_matrix = np.mean([glove_embeddings, paragram_embeddings, fasttext_embeddings], axis=0)
del glove_embeddings, paragram_embeddings, fasttext_embeddings
gc.collect()
np.shape(embedding_matrix )<split> | test_data['Fare'].fillna(value=test_data['Fare'].mean() , inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | splits = list(StratifiedKFold(n_splits=n_splits, shuffle=True, random_state=SEED ).split(x_train, y_train))
splits[:3]<choose_model_class> | test_data.isnull().sum() | Titanic - Machine Learning from Disaster |
14,646,784 | class CyclicLR(object):
def __init__(self, optimizer, base_lr=1e-3, max_lr=6e-3,
step_size=2000, mode='triangular', gamma=1.,
scale_fn=None, scale_mode='cycle', last_batch_iteration=-1):
if not isinstance(optimizer, Optimizer):
raise TypeError('{} is not an Optimizer'.format(
type(optimizer ).__name__))
self.optimizer = optimizer
if isinstance(base_lr, list)or isinstance(base_lr, tuple):
if len(base_lr)!= len(optimizer.param_groups):
raise ValueError("expected {} base_lr, got {}".format(
len(optimizer.param_groups), len(base_lr)))
self.base_lrs = list(base_lr)
else:
self.base_lrs = [base_lr] * len(optimizer.param_groups)
if isinstance(max_lr, list)or isinstance(max_lr, tuple):
if len(max_lr)!= len(optimizer.param_groups):
raise ValueError("expected {} max_lr, got {}".format(
len(optimizer.param_groups), len(max_lr)))
self.max_lrs = list(max_lr)
else:
self.max_lrs = [max_lr] * len(optimizer.param_groups)
self.step_size = step_size
if mode not in ['triangular', 'triangular2', 'exp_range'] \
and scale_fn is None:
raise ValueError('mode is invalid and scale_fn is None')
self.mode = mode
self.gamma = gamma
if scale_fn is None:
if self.mode == 'triangular':
self.scale_fn = self._triangular_scale_fn
self.scale_mode = 'cycle'
elif self.mode == 'triangular2':
self.scale_fn = self._triangular2_scale_fn
self.scale_mode = 'cycle'
elif self.mode == 'exp_range':
self.scale_fn = self._exp_range_scale_fn
self.scale_mode = 'iterations'
else:
self.scale_fn = scale_fn
self.scale_mode = scale_mode
self.batch_step(last_batch_iteration + 1)
self.last_batch_iteration = last_batch_iteration
def batch_step(self, batch_iteration=None):
if batch_iteration is None:
batch_iteration = self.last_batch_iteration + 1
self.last_batch_iteration = batch_iteration
for param_group, lr in zip(self.optimizer.param_groups, self.get_lr()):
param_group['lr'] = lr
def _triangular_scale_fn(self, x):
return 1.
def _triangular2_scale_fn(self, x):
return 1 /(2.**(x - 1))
def _exp_range_scale_fn(self, x):
return self.gamma**(x)
def get_lr(self):
step_size = float(self.step_size)
cycle = np.floor(1 + self.last_batch_iteration /(2 * step_size))
x = np.abs(self.last_batch_iteration / step_size - 2 * cycle + 1)
lrs = []
param_lrs = zip(self.optimizer.param_groups, self.base_lrs, self.max_lrs)
for param_group, base_lr, max_lr in param_lrs:
base_height =(max_lr - base_lr)* np.maximum(0,(1 - x))
if self.scale_mode == 'cycle':
lr = base_lr + base_height * self.scale_fn(cycle)
else:
lr = base_lr + base_height * self.scale_fn(self.last_batch_iteration)
lrs.append(lr)
return lrs
<choose_model_class> | test_data['Sex'] = test_data['Sex'].replace(['male', 'female'],[1,0])
test_data.rename(columns = {'Sex' : 'gender'}, inplace = True ) | Titanic - Machine Learning from Disaster |
14,646,784 | embedding_dim = 300
embedding_path = '.. /save/embedding_matrix.npy'
use_pretrained_embedding = True
hidden_size = 60
gru_len = hidden_size
Routings = 4
Num_capsule = 5
Dim_capsule = 5
dropout_p = 0.25
rate_drop_dense = 0.28
LR = 0.001
T_epsilon = 1e-7
num_classes = 30
class Embed_Layer(nn.Module):
def __init__(self, embedding_matrix=None, vocab_size=None, embedding_dim=300):
super(Embed_Layer, self ).__init__()
self.encoder = nn.Embedding(vocab_size + 1, embedding_dim)
if use_pretrained_embedding:
self.encoder.weight.data.copy_(t.from_numpy(embedding_matrix))
def forward(self, x, dropout_p=0.25):
return nn.Dropout(p=dropout_p )(self.encoder(x))
class GRU_Layer(nn.Module):
def __init__(self):
super(GRU_Layer, self ).__init__()
self.gru = nn.GRU(input_size=300,
hidden_size=gru_len,
bidirectional=True)
def init_weights(self):
ih =(param.data for name, param in self.named_parameters() if 'weight_ih' in name)
hh =(param.data for name, param in self.named_parameters() if 'weight_hh' in name)
b =(param.data for name, param in self.named_parameters() if 'bias' in name)
for k in ih:
nn.init.xavier_uniform_(k)
for k in hh:
nn.init.orthogonal_(k)
for k in b:
nn.init.constant_(k, 0)
def forward(self, x):
return self.gru(x)
class Caps_Layer(nn.Module):
def __init__(self, input_dim_capsule=gru_len * 2, num_capsule=Num_capsule, dim_capsule=Dim_capsule, \
routings=Routings, kernel_size=(9, 1), share_weights=True,
activation='default', **kwargs):
super(Caps_Layer, self ).__init__(**kwargs)
self.num_capsule = num_capsule
self.dim_capsule = dim_capsule
self.routings = routings
self.kernel_size = kernel_size
self.share_weights = share_weights
if activation == 'default':
self.activation = self.squash
else:
self.activation = nn.ReLU(inplace=True)
if self.share_weights:
self.W = nn.Parameter(
nn.init.xavier_normal_(t.empty(1, input_dim_capsule, self.num_capsule * self.dim_capsule)))
else:
self.W = nn.Parameter(
t.randn(BATCH_SIZE, input_dim_capsule, self.num_capsule * self.dim_capsule))
def forward(self, x):
if self.share_weights:
u_hat_vecs = t.matmul(x, self.W)
else:
print('add later')
batch_size = x.size(0)
input_num_capsule = x.size(1)
u_hat_vecs = u_hat_vecs.view(( batch_size, input_num_capsule,
self.num_capsule, self.dim_capsule))
u_hat_vecs = u_hat_vecs.permute(0, 2, 1, 3)
b = t.zeros_like(u_hat_vecs[:, :, :, 0])
for i in range(self.routings):
b = b.permute(0, 2, 1)
c = F.softmax(b, dim=2)
c = c.permute(0, 2, 1)
b = b.permute(0, 2, 1)
outputs = self.activation(t.einsum('bij,bijk->bik',(c, u_hat_vecs)))
if i < self.routings - 1:
b = t.einsum('bik,bijk->bij',(outputs, u_hat_vecs))
return outputs
def squash(self, x, axis=-1):
s_squared_norm =(x ** 2 ).sum(axis, keepdim=True)
scale = t.sqrt(s_squared_norm + T_epsilon)
return x / scale
class Capsule_Main(nn.Module):
def __init__(self, embedding_matrix=None, vocab_size=None):
super(Capsule_Main, self ).__init__()
self.embed_layer = Embed_Layer(embedding_matrix, vocab_size)
self.gru_layer = GRU_Layer()
self.gru_layer.init_weights()
self.caps_layer = Caps_Layer()
self.dense_layer = Dense_Layer()
def forward(self, content):
content1 = self.embed_layer(content)
content2, _ = self.gru_layer(
content1)
content3 = self.caps_layer(content2)
output = self.dense_layer(content3)
return output
<normalization> | test_data['Embarked'] = test_data['Embarked'].replace(['S','C','Q'],[0,1,2])
test_data.rename(columns = {'Embarked' : 'port'}, inplace = True ) | Titanic - Machine Learning from Disaster |
14,646,784 | class Attention(nn.Module):
def __init__(self, feature_dim, step_dim, bias=True, **kwargs):
super(Attention, self ).__init__(**kwargs)
self.supports_masking = True
self.bias = bias
self.feature_dim = feature_dim
self.step_dim = step_dim
self.features_dim = 0
weight = torch.zeros(feature_dim, 1)
nn.init.xavier_uniform_(weight)
self.weight = nn.Parameter(weight)
if bias:
self.b = nn.Parameter(torch.zeros(step_dim))
def forward(self, x, mask=None):
feature_dim = self.feature_dim
step_dim = self.step_dim
eij = torch.mm(
x.contiguous().view(-1, feature_dim),
self.weight
).view(-1, step_dim)
if self.bias:
eij = eij + self.b
eij = torch.tanh(eij)
a = torch.exp(eij)
if mask is not None:
a = a * mask
a = a / torch.sum(a, 1, keepdim=True)+ 1e-10
weighted_input = x * torch.unsqueeze(a, -1)
return torch.sum(weighted_input, 1)
class NeuralNet(nn.Module):
def __init__(self):
super(NeuralNet, self ).__init__()
fc_layer = 16
fc_layer1 = 16
self.embedding = nn.Embedding(max_features, embed_size)
self.embedding.weight = nn.Parameter(torch.tensor(embedding_matrix, dtype=torch.float32))
self.embedding.weight.requires_grad = False
self.embedding_dropout = nn.Dropout2d(0.1)
self.lstm = nn.LSTM(embed_size, hidden_size, bidirectional=True, batch_first=True)
self.gru = nn.GRU(hidden_size * 2, hidden_size, bidirectional=True, batch_first=True)
self.lstm2 = nn.LSTM(hidden_size * 2, hidden_size, bidirectional=True, batch_first=True)
self.lstm_attention = Attention(hidden_size * 2, maxlen)
self.gru_attention = Attention(hidden_size * 2, maxlen)
self.bn = nn.BatchNorm1d(16, momentum=0.5)
self.linear = nn.Linear(hidden_size*8+3, fc_layer1)
self.relu = nn.ReLU()
self.dropout = nn.Dropout(0.1)
self.fc = nn.Linear(fc_layer**2,fc_layer)
self.out = nn.Linear(fc_layer, 1)
self.lincaps = nn.Linear(Num_capsule * Dim_capsule, 1)
self.caps_layer = Caps_Layer()
def forward(self, x):
h_embedding = self.embedding(x[0])
h_embedding = torch.squeeze(
self.embedding_dropout(torch.unsqueeze(h_embedding, 0)))
h_lstm, _ = self.lstm(h_embedding)
h_gru, _ = self.gru(h_lstm)
content3 = self.caps_layer(h_gru)
content3 = self.dropout(content3)
batch_size = content3.size(0)
content3 = content3.view(batch_size, -1)
content3 = self.relu(self.lincaps(content3))
h_lstm_atten = self.lstm_attention(h_lstm)
h_gru_atten = self.gru_attention(h_gru)
avg_pool = torch.mean(h_gru, 1)
max_pool, _ = torch.max(h_gru, 1)
f = torch.tensor(x[1], dtype=torch.float ).cuda()
conc = torch.cat(( h_lstm_atten, h_gru_atten,content3, avg_pool, max_pool,f), 1)
conc = self.relu(self.linear(conc))
conc = self.bn(conc)
conc = self.dropout(conc)
out = self.out(conc)
return out<categorify> | test_data.rename(columns = {'Pclass' : 'passenger cls'} ) | Titanic - Machine Learning from Disaster |
14,646,784 | class MyDataset(Dataset):
def __init__(self,dataset):
self.dataset = dataset
def __getitem__(self, index):
data, target = self.dataset[index]
return data, target, index
def __len__(self):
return len(self.dataset )<compute_train_metric> | test_data['family_members'] = test_data['SibSp'] + test_data['Parch']
test_data.drop(['SibSp', 'Parch'], axis = 1, inplace=True ) | Titanic - Machine Learning from Disaster |
14,646,784 | class FocalLoss(nn.Module):
def __init__(self, alpha=1, gamma=2, logits=True, reduction='elementwise_mean'):
super(FocalLoss, self ).__init__()
self.alpha = alpha
self.gamma = gamma
self.logits = logits
self.reduction = reduction
def forward(self, inputs, targets):
if self.logits:
BCE_loss = F.binary_cross_entropy_with_logits(inputs, targets, reduction='none')
else:
BCE_loss = F.binary_cross_entropy(inputs, targets, reduction='none')
pt = torch.exp(-BCE_loss)
F_loss = self.alpha *(1-pt)**self.gamma * BCE_loss
if self.reduction is None:
return F_loss
else:
return torch.mean(F_loss )<define_variables> | test_data.loc[ test_data['Age'] <= 21, 'Age'] = 0
test_data.loc[(test_data['Age'] > 21)&(test_data['Age'] <= 34), 'Age'] = 1
test_data.loc[(test_data['Age'] > 34)&(test_data['Age'] <= 54), 'Age'] = 2
test_data.loc[(test_data['Age'] > 60)&(test_data['Age'] <= 75), 'Age'] = 3
test_data.loc[ test_data['Age'] > 75, 'Age'] ; | Titanic - Machine Learning from Disaster |
14,646,784 | def sigmoid(x):
return 1 /(1 + np.exp(-x))
train_preds = np.zeros(( len(x_train)))
test_preds = np.zeros(( len(df_test)))
seed_everything()
x_test_cuda = torch.tensor(x_test, dtype=torch.long ).cuda()
test = torch.utils.data.TensorDataset(x_test_cuda)
test_loader = torch.utils.data.DataLoader(test, batch_size=batch_size, shuffle=False)
avg_losses_f = []
avg_val_losses_f = []<data_type_conversions> | test_data.loc[ test_data['Fare'] <= 7.5, 'Fare'] = 0
test_data.loc[(test_data['Fare'] > 15)&(test_data['Fare'] <= 21.5), 'Fare'] = 1
test_data.loc[(test_data['Fare'] > 21.5)&(test_data['Age'] <= 29), 'Fare'] = 2
test_data.loc[(test_data['Fare'] > 29)&(test_data['Fare'] <= 36.5), 'Fare'] = 3
test_data.loc[ test_data['Fare'] > 36.5, 'Fare'] ; | Titanic - Machine Learning from Disaster |
14,646,784 | for i,(train_idx, valid_idx)in enumerate(splits):
x_train = np.array(x_train)
y_train = np.array(y_train)
features = np.array(features)
x_train_fold = torch.tensor(x_train[train_idx.astype(int)], dtype=torch.long ).cuda()
y_train_fold = torch.tensor(y_train[train_idx.astype(int), np.newaxis], dtype=torch.float32 ).cuda()
kfold_X_features = features[train_idx.astype(int)]
kfold_X_valid_features = features[valid_idx.astype(int)]
x_val_fold = torch.tensor(x_train[valid_idx.astype(int)], dtype=torch.long ).cuda()
y_val_fold = torch.tensor(y_train[valid_idx.astype(int), np.newaxis], dtype=torch.float32 ).cuda()
model = NeuralNet()
model.cuda()
gamma = 1.1 + i/16
loss_fn = FocalLoss(gamma=gamma)
step_size = 300
base_lr, max_lr = 0.001, 0.003
optimizer = torch.optim.Adam(filter(lambda p: p.requires_grad, model.parameters()),
lr=max_lr)
scheduler = CyclicLR(optimizer, base_lr=base_lr, max_lr=max_lr,
step_size=step_size, mode='exp_range',
gamma=0.99994)
train = torch.utils.data.TensorDataset(x_train_fold, y_train_fold)
valid = torch.utils.data.TensorDataset(x_val_fold, y_val_fold)
train = MyDataset(train)
valid = MyDataset(valid)
train_loader = torch.utils.data.DataLoader(train, batch_size=batch_size, shuffle=True)
valid_loader = torch.utils.data.DataLoader(valid, batch_size=batch_size, shuffle=False)
print(f'Fold {i + 1}')
for epoch in range(n_epochs):
start_time = time.time()
model.train()
avg_loss = 0.
for i,(x_batch, y_batch, index)in enumerate(train_loader):
f = kfold_X_features[index]
y_pred = model([x_batch,f])
if scheduler:
scheduler.batch_step()
loss = loss_fn(y_pred, y_batch)
optimizer.zero_grad()
loss.backward()
optimizer.step()
avg_loss += loss.item() / len(train_loader)
model.eval()
valid_preds_fold = np.zeros(( x_val_fold.size(0)))
test_preds_fold = np.zeros(( len(df_test)))
avg_val_loss = 0.
for i,(x_batch, y_batch, index)in enumerate(valid_loader):
f = kfold_X_valid_features[index]
y_pred = model([x_batch,f] ).detach()
avg_val_loss += loss_fn(y_pred, y_batch ).item() / len(valid_loader)
valid_preds_fold[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
elapsed_time = time.time() - start_time
print('Epoch {}/{} \t loss={:.4f} \t val_loss={:.4f} \t time={:.2f}s'.format(
epoch + 1, n_epochs, avg_loss, avg_val_loss, elapsed_time))
avg_losses_f.append(avg_loss)
avg_val_losses_f.append(avg_val_loss)
for i,(x_batch,)in enumerate(test_loader):
f = test_features[i * batch_size:(i+1)* batch_size]
y_pred = model([x_batch,f] ).detach()
test_preds_fold[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
train_preds[valid_idx] = valid_preds_fold
test_preds += test_preds_fold / len(splits)
print('All \t loss={:.4f} \t val_loss={:.4f} \t '.format(np.average(avg_losses_f),np.average(avg_val_losses_f)))
<compute_test_metric> | x = train_data.drop("Survived", axis = 1 ) | Titanic - Machine Learning from Disaster |
14,646,784 | def bestThresshold(y_train,train_preds):
tmp = [0,0,0]
delta = 0
for tmp[0] in tqdm(np.arange(0.3, 0.601, 0.001)) :
tmp[1] = f1_score(y_train, np.array(train_preds)>tmp[0])
if tmp[1] > tmp[2]:
delta = tmp[0]
tmp[2] = tmp[1]
print('best threshold is {:.4f} with F1 score: {:.4f}'.format(delta, tmp[2]))
return delta
delta = bestThresshold(y_train,train_preds )<save_to_csv> | y = train_data["Survived"] | Titanic - Machine Learning from Disaster |
14,646,784 | submission = df_test[['qid']].copy()
submission['prediction'] =(test_preds > delta ).astype(int)
submission.to_csv('submission.csv', index=False )<set_options> | from sklearn.model_selection import train_test_split | Titanic - Machine Learning from Disaster |
14,646,784 | %matplotlib inline
pd.set_option('max_colwidth',400)
warnings.filterwarnings("ignore", message="F-score is ill-defined and being set to 0.0 due to no predicted samples.")
<set_options> | from sklearn.model_selection import train_test_split | Titanic - Machine Learning from Disaster |
14,646,784 | def seed_torch(seed=1029):
random.seed(seed)
os.environ['PYTHONHASHSEED'] = str(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
torch.backends.cudnn.deterministic = True<load_from_csv> | x_train, x_test, y_train, y_test = train_test_split(x, y, test_size = 0.4, random_state = 12 ) | Titanic - Machine Learning from Disaster |
14,646,784 | train = pd.read_csv(".. /input/train.csv")
test = pd.read_csv(".. /input/test.csv")
sub = pd.read_csv('.. /input/sample_submission.csv' )<count_values> | dtree = DecisionTreeClassifier()
dtree.fit(x_train, y_train)
y_pred = dtree.predict(x_test)
dtree_accuracy = round(accuracy_score(y_pred, y_test)* 100, 2)
print(dtree_accuracy ) | Titanic - Machine Learning from Disaster |
14,646,784 | train["target"].value_counts()<split> | randomforest = RandomForestClassifier(n_estimators=30, max_depth = 4)
randomforest.fit(x_train, y_train)
y_pred = randomforest.predict(x_test)
acc_randomforest = round(accuracy_score(y_pred, y_test)* 100, 2)
print(acc_randomforest ) | Titanic - Machine Learning from Disaster |
14,646,784 | print('Average word length of questions in train is {0:.0f}.'.format(np.mean(train['question_text'].apply(lambda x: len(x.split())))))
print('Average word length of questions in test is {0:.0f}.'.format(np.mean(test['question_text'].apply(lambda x: len(x.split())))) )<string_transform> | logreg = LogisticRegression(solver='liblinear', dual = False)
logreg.fit(x_train, y_train)
y_pred = logreg.predict(x_test)
acc_log = round(logreg.score(x_train, y_train)* 100, 2)
acc_log
accuracy_score(y_test, y_pred ) | Titanic - Machine Learning from Disaster |
14,646,784 | print('Max word length of questions in train is {0:.0f}.'.format(np.max(train['question_text'].apply(lambda x: len(x.split())))))
print('Max word length of questions in test is {0:.0f}.'.format(np.max(test['question_text'].apply(lambda x: len(x.split())))) )<compute_test_metric> | dt = RandomForestClassifier(n_estimators=30, max_depth = 4 ) | Titanic - Machine Learning from Disaster |
14,646,784 | print('Average character length of questions in train is {0:.0f}.'.format(np.mean(train['question_text'].apply(lambda x: len(x)))))
print('Average character length of questions in test is {0:.0f}.'.format(np.mean(test['question_text'].apply(lambda x: len(x)))) )<train_model> | dt.fit(x_train, y_train ) | Titanic - Machine Learning from Disaster |
14,646,784 | max_features = 120000
tk = Tokenizer(lower = True, filters='', num_words=max_features)
full_text = list(train['question_text'].values)+ list(test['question_text'].values)
tk.fit_on_texts(full_text )<string_transform> | y_test_predict = dt.predict(x_test ) | Titanic - Machine Learning from Disaster |
14,646,784 | train_tokenized = tk.texts_to_sequences(train['question_text'].fillna('missing'))
test_tokenized = tk.texts_to_sequences(test['question_text'].fillna('missing'))<categorify> | print(classification_report(y_test, y_test_predict)) | Titanic - Machine Learning from Disaster |
14,646,784 | max_len = 72
maxlen = 72
X_train = pad_sequences(train_tokenized, maxlen = max_len)
X_test = pad_sequences(test_tokenized, maxlen = max_len )<prepare_x_and_y> | x_test = test_data | Titanic - Machine Learning from Disaster |
14,646,784 | y_train = train['target'].values<compute_test_metric> | y_test_predict = dt.predict(test_data ) | Titanic - Machine Learning from Disaster |
14,646,784 | <split><EOS> | output_data = pd.DataFrame({'PassengerId' : test_data.PassengerId, 'Survived' : y_test_predict})
output_data.to_csv('Titanic_Survival_Decision_Tree', index = False)
print("Submission is successfully" ) | Titanic - Machine Learning from Disaster |
14,395,164 | <SOS> metric: categorizationaccuracy Kaggle data source: titanic-machine-learning-from-disaster<statistical_test> | import pandas as pd
from sklearn.tree import DecisionTreeClassifier | Titanic - Machine Learning from Disaster |
14,395,164 | embed_size = 300
embedding_path = ".. /input/embeddings/glove.840B.300d/glove.840B.300d.txt"
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embedding_index = dict(get_coefs(*o.split(" ")) for o in open(embedding_path, encoding='utf-8', errors='ignore'))
emb_mean,emb_std = -0.005838499, 0.48782197
word_index = tk.word_index
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words + 1, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embedding_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector<compute_train_metric> | train = pd.read_csv('.. /input/titanic/train.csv')
test = pd.read_csv('.. /input/titanic/test.csv' ) | Titanic - Machine Learning from Disaster |
14,395,164 | embedding_path = ".. /input/embeddings/paragram_300_sl999/paragram_300_sl999.txt"
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embedding_index = dict(get_coefs(*o.split(" ")) for o in open(embedding_path, encoding='utf-8', errors='ignore')if len(o)>100)
emb_mean,emb_std = -0.0053247833, 0.49346462
embedding_matrix1 = np.random.normal(emb_mean, emb_std,(nb_words + 1, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embedding_index.get(word)
if embedding_vector is not None: embedding_matrix1[i] = embedding_vector<compute_test_metric> | train = train.drop(["Name", "Ticket", "Cabin"], axis=1)
test = test.drop(["Name", "Ticket", "Cabin"], axis=1 ) | Titanic - Machine Learning from Disaster |
14,395,164 | embedding_matrix = np.mean([embedding_matrix, embedding_matrix1], axis=0)
del embedding_matrix1<normalization> | new_data_train = pd.get_dummies(train)
new_data_test = pd.get_dummies(test ) | Titanic - Machine Learning from Disaster |
14,395,164 | class Attention(nn.Module):
def __init__(self, feature_dim, step_dim, bias=True, **kwargs):
super(Attention, self ).__init__(**kwargs)
self.supports_masking = True
self.bias = bias
self.feature_dim = feature_dim
self.step_dim = step_dim
self.features_dim = 0
weight = torch.zeros(feature_dim, 1)
nn.init.xavier_uniform_(weight)
self.weight = nn.Parameter(weight)
if bias:
self.b = nn.Parameter(torch.zeros(step_dim))
def forward(self, x, mask=None):
feature_dim = self.feature_dim
step_dim = self.step_dim
eij = torch.mm(
x.contiguous().view(-1, feature_dim),
self.weight
).view(-1, step_dim)
if self.bias:
eij = eij + self.b
eij = torch.tanh(eij)
a = torch.exp(eij)
if mask is not None:
a = a * mask
a = a / torch.sum(a, 1, keepdim=True)+ 1e-10
weighted_input = x * torch.unsqueeze(a, -1)
return torch.sum(weighted_input, 1)
class NeuralNet(nn.Module):
def __init__(self):
super(NeuralNet, self ).__init__()
hidden_size = 128
self.embedding = nn.Embedding(max_features, embed_size)
self.embedding.weight = nn.Parameter(torch.tensor(embedding_matrix, dtype=torch.float32))
self.embedding.weight.requires_grad = False
self.embedding_dropout = nn.Dropout2d(0.1)
self.lstm = nn.LSTM(embed_size, hidden_size, bidirectional=True, batch_first=True)
self.gru = nn.GRU(hidden_size*2, hidden_size, bidirectional=True, batch_first=True)
self.lstm_attention = Attention(hidden_size*2, maxlen)
self.gru_attention = Attention(hidden_size*2, maxlen)
self.linear = nn.Linear(1024, 16)
self.relu = nn.ReLU()
self.dropout = nn.Dropout(0.1)
self.out = nn.Linear(16, 1)
def forward(self, x):
h_embedding = self.embedding(x)
h_embedding = torch.squeeze(self.embedding_dropout(torch.unsqueeze(h_embedding, 0)))
h_lstm, _ = self.lstm(h_embedding)
h_gru, _ = self.gru(h_lstm)
h_lstm_atten = self.lstm_attention(h_lstm)
h_gru_atten = self.gru_attention(h_gru)
avg_pool = torch.mean(h_gru, 1)
max_pool, _ = torch.max(h_gru, 1)
conc = torch.cat(( h_lstm_atten, h_gru_atten, avg_pool, max_pool), 1)
conc = self.relu(self.linear(conc))
conc = self.dropout(conc)
out = self.out(conc)
return out<choose_model_class> | new_data_train.isnull().sum().sort_values(ascending=False ).head(10 ) | Titanic - Machine Learning from Disaster |
14,395,164 | m = NeuralNet()<train_model> | new_data_train["Age"].fillna(new_data_train["Age"].mean() , inplace=True)
new_data_test["Age"].fillna(new_data_test["Age"].mean() , inplace=True ) | Titanic - Machine Learning from Disaster |
14,395,164 | def train_model(model, x_train, y_train, x_val, y_val, validate=True):
optimizer = torch.optim.Adam(model.parameters())
train = torch.utils.data.TensorDataset(x_train, y_train)
valid = torch.utils.data.TensorDataset(x_val, y_val)
train_loader = torch.utils.data.DataLoader(train, batch_size=batch_size, shuffle=True)
valid_loader = torch.utils.data.DataLoader(valid, batch_size=batch_size, shuffle=False)
loss_fn = torch.nn.BCEWithLogitsLoss(reduction='mean' ).cuda()
best_score = -np.inf
for epoch in range(n_epochs):
start_time = time.time()
model.train()
avg_loss = 0.
for x_batch, y_batch in tqdm(train_loader, disable=True):
y_pred = model(x_batch)
loss = loss_fn(y_pred, y_batch)
optimizer.zero_grad()
loss.backward()
optimizer.step()
avg_loss += loss.item() / len(train_loader)
model.eval()
valid_preds = np.zeros(( x_val_fold.size(0)))
if validate:
avg_val_loss = 0.
for i,(x_batch, y_batch)in enumerate(valid_loader):
y_pred = model(x_batch ).detach()
avg_val_loss += loss_fn(y_pred, y_batch ).item() / len(valid_loader)
valid_preds[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
search_result = threshold_search(y_val.cpu().numpy() , valid_preds)
val_f1, val_threshold = search_result['f1'], search_result['threshold']
elapsed_time = time.time() - start_time
print('Epoch {}/{} \t loss={:.4f} \t val_loss={:.4f} \t val_f1={:.4f} best_t={:.2f} \t time={:.2f}s'.format(
epoch + 1, n_epochs, avg_loss, avg_val_loss, val_f1, val_threshold, elapsed_time))
else:
elapsed_time = time.time() - start_time
print('Epoch {}/{} \t loss={:.4f} \t time={:.2f}s'.format(
epoch + 1, n_epochs, avg_loss, elapsed_time))
valid_preds = np.zeros(( x_val_fold.size(0)))
avg_val_loss = 0.
for i,(x_batch, y_batch)in enumerate(valid_loader):
y_pred = model(x_batch ).detach()
avg_val_loss += loss_fn(y_pred, y_batch ).item() / len(valid_loader)
valid_preds[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
print('Validation loss: ', avg_val_loss)
test_preds = np.zeros(( len(test_loader.dataset)))
for i,(x_batch,)in enumerate(test_loader):
y_pred = model(x_batch ).detach()
test_preds[i * batch_size:(i+1)* batch_size] = sigmoid(y_pred.cpu().numpy())[:, 0]
return valid_preds, test_preds<create_dataframe> | new_data_test.isnull().sum().sort_values(ascending=False ).head(10 ) | Titanic - Machine Learning from Disaster |
14,395,164 | x_test_cuda = torch.tensor(X_test, dtype=torch.long ).cuda()
test = torch.utils.data.TensorDataset(x_test_cuda)
batch_size = 512
test_loader = torch.utils.data.DataLoader(test, batch_size=batch_size, shuffle=False )<compute_train_metric> | new_data_test["Fare"].fillna(new_data_test["Fare"].mean() , inplace=True ) | Titanic - Machine Learning from Disaster |
14,395,164 | seed=1029
def threshold_search(y_true, y_proba):
best_threshold = 0
best_score = 0
for threshold in tqdm([i * 0.01 for i in range(100)], disable=True):
score = f1_score(y_true=y_true, y_pred=y_proba > threshold)
if score > best_score:
best_threshold = threshold
best_score = score
search_result = {'threshold': best_threshold, 'f1': best_score}
return search_result
def seed_everything(seed=1234):
random.seed(seed)
os.environ['PYTHONHASHSEED'] = str(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
torch.backends.cudnn.deterministic = True
seed_everything()<prepare_x_and_y> | X = new_data_train.drop("Survived", axis=1)
y = new_data_train["Survived"] | Titanic - Machine Learning from Disaster |
14,395,164 | train_preds = np.zeros(len(train))
test_preds = np.zeros(( len(test), len(splits)))
n_epochs = 5
for i,(train_idx, valid_idx)in enumerate(splits):
x_train_fold = torch.tensor(X_train[train_idx], dtype=torch.long ).cuda()
y_train_fold = torch.tensor(y_train[train_idx, np.newaxis], dtype=torch.float32 ).cuda()
x_val_fold = torch.tensor(X_train[valid_idx], dtype=torch.long ).cuda()
y_val_fold = torch.tensor(y_train[valid_idx, np.newaxis], dtype=torch.float32 ).cuda()
train = torch.utils.data.TensorDataset(x_train_fold, y_train_fold)
valid = torch.utils.data.TensorDataset(x_val_fold, y_val_fold)
train_loader = torch.utils.data.DataLoader(train, batch_size=batch_size, shuffle=True)
valid_loader = torch.utils.data.DataLoader(valid, batch_size=batch_size, shuffle=False)
print(f'Fold {i + 1}')
seed_everything(seed + i)
model = NeuralNet()
model.cuda()
valid_preds_fold, test_preds_fold = train_model(model,
x_train_fold,
y_train_fold,
x_val_fold,
y_val_fold, validate=False)
train_preds[valid_idx] = valid_preds_fold
test_preds[:, i] = test_preds_fold<save_to_csv> | tree = DecisionTreeClassifier(max_depth = 10, random_state = 0)
tree.fit(X, y ) | Titanic - Machine Learning from Disaster |
14,395,164 | search_result = threshold_search(y_train, train_preds)
sub['prediction'] = test_preds.mean(1)> search_result['threshold']
sub.to_csv("submission.csv", index=False )<import_modules> | tree.score(X, y)
| Titanic - Machine Learning from Disaster |
14,395,164 | tqdm.pandas(desc='Progress')
<define_variables> | from sklearn.ensemble import RandomForestClassifier
from sklearn.ensemble import RandomForestClassifier
from sklearn.model_selection import train_test_split | Titanic - Machine Learning from Disaster |
14,395,164 | embed_size = 300
max_features = 120000
maxlen = 70
batch_size = 512
n_epochs = 5
n_splits = 5
SEED = 1029<set_options> | Xtrain, Xvalidation, Ytrain, Yvalidation = train_test_split(X, y, test_size=0.2, random_state=True ) | Titanic - Machine Learning from Disaster |
14,395,164 | def seed_everything(seed=1029):
random.seed(seed)
os.environ['PYTHONHASHSEED'] = str(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed(seed)
torch.backends.cudnn.deterministic = True
seed_everything()<features_selection> | model = RandomForestClassifier(n_estimators=100,
max_leaf_nodes=12,
max_depth=12,
random_state=0)
model.fit(Xtrain, Ytrain ) | Titanic - Machine Learning from Disaster |
14,395,164 | def load_glove(word_index):
EMBEDDING_FILE = '.. /input/embeddings/glove.840B.300d/glove.840B.300d.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')[:300]
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE))
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = -0.005838499,0.48782197
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix
def load_fasttext(word_index):
EMBEDDING_FILE = '.. /input/embeddings/wiki-news-300d-1M/wiki-news-300d-1M.vec'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE)if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = all_embs.mean() , all_embs.std()
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix
def load_para(word_index):
EMBEDDING_FILE = '.. /input/embeddings/paragram_300_sl999/paragram_300_sl999.txt'
def get_coefs(word,*arr): return word, np.asarray(arr, dtype='float32')
embeddings_index = dict(get_coefs(*o.split(" ")) for o in open(EMBEDDING_FILE, encoding="utf8", errors='ignore')if len(o)>100)
all_embs = np.stack(embeddings_index.values())
emb_mean,emb_std = -0.0053247833,0.49346462
embed_size = all_embs.shape[1]
nb_words = min(max_features, len(word_index))
embedding_matrix = np.random.normal(emb_mean, emb_std,(nb_words, embed_size))
for word, i in word_index.items() :
if i >= max_features: continue
embedding_vector = embeddings_index.get(word)
if embedding_vector is not None: embedding_matrix[i] = embedding_vector
return embedding_matrix<load_from_csv> | model.score(Xtrain, Ytrain ) | Titanic - Machine Learning from Disaster |
14,395,164 | df_train = pd.read_csv(".. /input/train.csv")
df_test = pd.read_csv(".. /input/test.csv")
df = pd.concat([df_train ,df_test],sort=True )<feature_engineering> | Yprediction = model.predict(Xvalidation)
accuracy_score(Yvalidation, Yprediction ) | Titanic - Machine Learning from Disaster |
14,395,164 | def build_vocab(texts):
sentences = texts.apply(lambda x: x.split() ).values
vocab = {}
for sentence in sentences:
for word in sentence:
try:
vocab[word] += 1
except KeyError:
vocab[word] = 1
return vocab
vocab = build_vocab(df['question_text'] )<define_variables> | submission = pd.DataFrame()
submission["PassengerId"] = Xtest["PassengerId"]
submission["Survived"] = model.predict(Xtest)
submission.to_csv("submission.csv", index=False ) | Titanic - Machine Learning from Disaster |
14,261,262 | sin = len(df_train[df_train["target"]==0])
insin = len(df_train[df_train["target"]==1])
persin =(sin/(sin+insin)) *100
perinsin =(insin/(sin+insin)) *100
print("
print("<feature_engineering> | import pandas as pd
import seaborn as sns
import matplotlib.pyplot as plt | Titanic - Machine Learning from Disaster |
14,261,262 | def build_vocab(texts):
sentences = texts.apply(lambda x: x.split() ).values
vocab = {}
for sentence in sentences:
for word in sentence:
try:
vocab[word] += 1
except KeyError:
vocab[word] = 1
return vocab
def known_contractions(embed):
known = []
for contract in contraction_mapping:
if contract in embed:
known.append(contract)
return known
def clean_contractions(text, mapping):
specials = ["’", "‘", "´", "`"]
for s in specials:
text = text.replace(s, "'")
text = ' '.join([mapping[t] if t in mapping else t for t in text.split(" ")])
return text
def correct_spelling(x, dic):
for word in dic.keys() :
x = x.replace(word, dic[word])
return x
def unknown_punct(embed, punct):
unknown = ''
for p in punct:
if p not in embed:
unknown += p
unknown += ' '
return unknown
def clean_numbers(x):
x = re.sub('[0-9]{5,}', '
x = re.sub('[0-9]{4}', '
x = re.sub('[0-9]{3}', '
x = re.sub('[0-9]{2}', '
return x
def clean_special_chars(text, punct, mapping):
for p in mapping:
text = text.replace(p, mapping[p])
for p in punct:
text = text.replace(p, f' {p} ')
specials = {'\u200b': ' ', '…': '...', '\ufeff': '', 'करना': '', 'है': ''}
for s in specials:
text = text.replace(s, specials[s])
return text
def add_lower(embedding, vocab):
count = 0
for word in vocab:
if word in embedding and word.lower() not in embedding:
embedding[word.lower() ] = embedding[word]
count += 1
print(f"Added {count} words to embedding" )<define_variables> | train_df = pd.read_csv('/kaggle/input/titanic/train.csv')
test_df = pd.read_csv('/kaggle/input/titanic/test.csv')
dataset = [train_df, test_df]
dataset[0].head() | Titanic - Machine Learning from Disaster |
14,261,262 | puncts = [',', '.', '"', ':', ')', '(', '-', '!', '?', '|', ';', "'", '$', '&', '/', '[', ']', '>', '%', '=', '
'·', '_', '{', '}', '©', '^', '®', '`', '<', '→', '°', '€', '™', '›', '♥', '←', '×', '§', '″', '′', 'Â', '█', '½', 'à', '…',
'“', '★', '”', '–', '●', 'â', '►', '−', '¢', '²', '¬', '░', '¶', '↑', '±', '¿', '▾', '═', '¦', '║', '―', '¥', '▓', '—', '‹', '─',
'▒', '：', '¼', '⊕', '▼', '▪', '†', '■', '’', '▀', '¨', '▄', '♫', '☆', 'é', '¯', '♦', '¤', '▲', 'è', '¸', '¾', 'Ã', '⋅', '‘', '∞',
'∙', '）', '↓', '、', '│', '（', '»', '，', '♪', '╩', '╚', '³', '・', '╦', '╣', '╔', '╗', '▬', '❤', 'ï', 'Ø', '¹', '≤', '‡', '√', ]
def clean_text(x):
x = str(x)
for punct in puncts:
x = x.replace(punct, f' {punct} ')
return x
def clean_numbers(x):
x = re.sub('[0-9]{5,}', '
x = re.sub('[0-9]{4}', '
x = re.sub('[0-9]{3}', '
x = re.sub('[0-9]{2}', '
return x
mispell_dict = {"ain't": "is not", "aren't": "are not","can't": "cannot", "'cause": "because", "could've": "could have", "couldn't": "could not", "didn't": "did not", "doesn't": "does not", "don't": "do not", "hadn't": "had not", "hasn't": "has not", "haven't": "have not", "he'd": "he would","he'll": "he will", "he's": "he is", "how'd": "how did", "how'd'y": "how do you", "how'll": "how will", "how's": "how is", "I'd": "I would", "I'd've": "I would have", "I'll": "I will", "I'll've": "I will have","I'm": "I am", "I've": "I have", "i'd": "i would", "i'd've": "i would have", "i'll": "i will", "i'll've": "i will have","i'm": "i am", "i've": "i have", "isn't": "is not", "it'd": "it would", "it'd've": "it would have", "it'll": "it will", "it'll've": "it will have","it's": "it is", "let's": "let us", "ma'am": "madam", "mayn't": "may not", "might've": "might have","mightn't": "might not","mightn't've": "might not have", "must've": "must have", "mustn't": "must not", "mustn't've": "must not have", "needn't": "need not", "needn't've": "need not have","o'clock": "of the clock", "oughtn't": "ought not", "oughtn't've": "ought not have", "shan't": "shall not", "sha'n't": "shall not", "shan't've": "shall not have", "she'd": "she would", "she'd've": "she would have", "she'll": "she will", "she'll've": "she will have", "she's": "she is", "should've": "should have", "shouldn't": "should not", "shouldn't've": "should not have", "so've": "so have","so's": "so as", "this's": "this is","that'd": "that would", "that'd've": "that would have", "that's": "that is", "there'd": "there would", "there'd've": "there would have", "there's": "there is", "here's": "here is","they'd": "they would", "they'd've": "they would have", "they'll": "they will", "they'll've": "they will have", "they're": "they are", "they've": "they have", "to've": "to have", "wasn't": "was not", "we'd": "we would", "we'd've": "we would have", "we'll": "we will", "we'll've": "we will have", "we're": "we are", "we've": "we have", "weren't": "were not", "what'll": "what will", "what'll've": "what will have", "what're": "what are", "what's": "what is", "what've": "what have", "when's": "when is", "when've": "when have", "where'd": "where did", "where's": "where is", "where've": "where have", "who'll": "who will", "who'll've": "who will have", "who's": "who is", "who've": "who have", "why's": "why is", "why've": "why have", "will've": "will have", "won't": "will not", "won't've": "will not have", "would've": "would have", "wouldn't": "would not", "wouldn't've": "would not have", "y'all": "you all", "y'all'd": "you all would","y'all'd've": "you all would have","y'all're": "you all are","y'all've": "you all have","you'd": "you would", "you'd've": "you would have", "you'll": "you will", "you'll've": "you will have", "you're": "you are", "you've": "you have", 'colour': 'color', 'centre': 'center', 'favourite': 'favorite', 'travelling': 'traveling', 'counselling': 'counseling', 'theatre': 'theater', 'cancelled': 'canceled', 'labour': 'labor', 'organisation': 'organization', 'wwii': 'world war 2', 'citicise': 'criticize', 'youtu ': 'youtube ', 'Qoura': 'Quora', 'sallary': 'salary', 'Whta': 'What', 'narcisist': 'narcissist', 'howdo': 'how do', 'whatare': 'what are', 'howcan': 'how can', 'howmuch': 'how much', 'howmany': 'how many', 'whydo': 'why do', 'doI': 'do I', 'theBest': 'the best', 'howdoes': 'how does', 'mastrubation': 'masturbation', 'mastrubate': 'masturbate', "mastrubating": 'masturbating', 'pennis': 'penis', 'Etherium': 'Ethereum', 'narcissit': 'narcissist', 'bigdata': 'big data', '2k17': '2017', '2k18': '2018', 'qouta': 'quota', 'exboyfriend': 'ex boyfriend', 'airhostess': 'air hostess', "whst": 'what', 'watsapp': 'whatsapp', 'demonitisation': 'demonetization', 'demonitization': 'demonetization', 'demonetisation': 'demonetization'}
def _get_mispell(mispell_dict):
mispell_re = re.compile('(%s)' % '|'.join(mispell_dict.keys()))
return mispell_dict, mispell_re
mispellings, mispellings_re = _get_mispell(mispell_dict)
def replace_typical_misspell(text):
def replace(match):
return mispellings[match.group(0)]
return mispellings_re.sub(replace, text )<feature_engineering> | for df in dataset:
df.Sex = df.Sex.map({'male':0, 'female': 1})
train_df.Sex.unique() | Titanic - Machine Learning from Disaster |
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