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train_df["attempt_no"] = 1 train_df.attempt_no=train_df.attempt_no.astype('int8') train_df["attempt_no"] = train_df[["user_id","content_id",'attempt_no']].groupby(["user_id","content_id"])["attempt_no"].cumsum()<data_type_conversions>
temp = copy.deepcopy(total_df[total_df.columns[total_df.columns != 'Age']]) temp.Title.replace(to_replace = ['Mr'] , value = 0 , inplace = True) temp.Title.replace(to_replace = ['Mrs'] , value = 1 , inplace = True) temp.Title.replace(to_replace = ['Miss'] , value = 2, inplace = True) temp.Title.replace(to_replace =...
Titanic - Machine Learning from Disaster
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explanation_agg = train_df.groupby('user_id')['prior_question_had_explanation'].agg(['sum', 'count']) explanation_agg=explanation_agg.astype('int16') <groupby>
total_df.Age = temp.groupby(['Pclass','Title'])['Age'].transform(lambda v: v.fillna(v.median())) checking_missing(total_df )
Titanic - Machine Learning from Disaster
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user_agg = train_df.groupby('user_id')[target].agg(['sum', 'count']) content_agg = train_df.groupby('content_id')[target].agg(['sum', 'count','var']) task_container_agg = train_df.groupby('task_container_id')[target].agg(['sum', 'count','var']) <data_type_conversions>
LE_columns = ['FamSize','Fare_Group','Sex','Age_Group','Missing_Age'] OHE_columns = ['Embarked','Title'] Other_columns = total_df.columns[~total_df.columns.isin(LE_columns)& ~total_df.columns.isin(OHE_columns)] LE_data = total_df[LE_columns] OHE_data = total_df[OHE_columns] Other_data = total_df[Other_columns] for col ...
Titanic - Machine Learning from Disaster
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user_agg=user_agg.astype('int16') content_agg=content_agg.astype('float32') task_container_agg=task_container_agg.astype('float32' )<categorify>
train_df = train_df.drop(['PassengerId','Survived'],axis = 1) test_df = test_df.drop(['PassengerId','Survived'], axis = 1) ntrain = len(train_df) ntest = len(test_df )
Titanic - Machine Learning from Disaster
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attempt_no_agg=train_df.groupby(["user_id","content_id"])["attempt_no"].agg(['sum']) attempt_no_agg=attempt_no_agg.astype('int8') <data_type_conversions>
xgbParams = {'max_depth':np.arange(3,11,2),'learning_rate':np.arange(0.01,0.2,0.05) ,'n_estimator':np.arange(100,1100,50),'gamma':np.arange(0.01,0.3,0.05)} ABParams = {'n_estimators':np.arange(100,1100,50),'learning_rate':np.arange(0.01,0.2,0.05)} RFParams = {'n_estimators':np.arange(100,1100,50),'max_depth':np.arange...
Titanic - Machine Learning from Disaster
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train_df['content_count'] = train_df['content_id'].map(content_agg['count'] ).astype('int32') train_df['content_sum'] = train_df['content_id'].map(content_agg['sum'] ).astype('int32') train_df['content_correctness'] = train_df['content_id'].map(content_agg['sum'] / content_agg['count']) train_df.content_correctness=...
xgb_best_Params,xgb_best_score = tuneParamsRandom(XGBClassifier() ,xgbParams,train_df,train_label) print("XGB:",xgb_best_Params,xgb_best_score) AB_best_Params,AB_best_score = tuneParamsRandom(AdaBoostClassifier() ,ABParams,train_df,train_label) print("AdaBoost:",AB_best_Params,AB_best_score) RF_best_Params,RF_best_...
Titanic - Machine Learning from Disaster
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questions_df = pd.read_csv( '.. /input/riiid-test-answer-prediction/questions.csv', usecols=[0, 1,3,4], dtype={'question_id': 'int16','bundle_id': 'int16', 'part': 'int8','tags': 'str'} ) questions_df['part_bundle_id']=questions_df['part']*100000+questions_df['bundle_id'] questions_df.part_bundle_id=questions_df.par...
kf = KFold(n_splits = 5, random_state = 2019) def fold_training(model, train_x, train_y, test_x): oof_train = np.zeros(( ntrain)) oof_test = np.zeros(( ntest)) oof_kf_test = np.zeros(( 5,ntest)) for i,(train_idx,test_idx)in enumerate(kf.split(train_x)) : kf_train_x = train_x.iloc[train_idx] kf_train_y = train_y.iloc[t...
Titanic - Machine Learning from Disaster
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questions_df.rename(columns={'question_id':'content_id'}, inplace=True )<data_type_conversions>
xgb_oof_train,xgb_oof_test = fold_training(XGBClassifier(**xgb_best_Params),train_df,train_label,test_df) AB_oof_train,AB_oof_test = fold_training(AdaBoostClassifier(**AB_best_Params),train_df,train_label,test_df) RF_oof_train,RF_oof_test = fold_training(RandomForestClassifier(**RF_best_Params),train_df,train_label,t...
Titanic - Machine Learning from Disaster
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questions_df['content_correctness'] = questions_df['content_id'].map(content_agg['sum'] / content_agg['count']) questions_df.content_correctness=questions_df.content_correctness.astype('float16') questions_df['content_correctness_std'] = questions_df['content_id'].map(content_agg['var']) questions_df.content_correct...
final_train_df = pd.DataFrame(np.concatenate(( xgb_oof_train,AB_oof_train, RF_oof_train,ET_oof_train,gbc_oof_train,LGBMC_oof_train),axis=1)) final_test_df = pd.DataFrame(np.concatenate(( xgb_oof_test,AB_oof_test, RF_oof_test,ET_oof_test,gbc_oof_test,LGBMC_oof_test),axis=1)) LRParams = {'penalty':['l1','l2'],'C':[0.01,0...
Titanic - Machine Learning from Disaster
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part_agg = questions_df.groupby('part')['content_correctness'].agg(['mean', 'var']) questions_df['part_correctness_mean'] = questions_df['part'].map(part_agg['mean']) questions_df['part_correctness_std'] = questions_df['part'].map(part_agg['var']) questions_df.part_correctness_mean=questions_df.part_correctness_mean...
LR = LogisticRegression(**LR_best_Params) LR.fit(final_train_df,train_label) prediction = LR.predict(final_test_df )
Titanic - Machine Learning from Disaster
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bundle_agg = questions_df.groupby('bundle_id')['content_correctness'].agg(['mean']) questions_df['bundle_correctness'] = questions_df['bundle_id'].map(bundle_agg['mean']) questions_df.bundle_correctness=questions_df.bundle_correctness.astype('float16' )<categorify>
submission = pd.DataFrame({'PassengerId':test_Ids,'Survived':prediction}) submission.to_csv('submission_v9.csv',index = False )
Titanic - Machine Learning from Disaster
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tags1_agg = questions_df.groupby('tags1')['content_correctness'].agg(['mean', 'var']) questions_df['tags1_correctness_mean'] = questions_df['tags1'].map(tags1_agg['mean']) questions_df['tags1_correctness_std'] = questions_df['tags1'].map(tags1_agg['var']) questions_df.tags1_correctness_mean=questions_df.tags1_correc...
plt.style.use('seaborn-darkgrid') warnings.filterwarnings('ignore' )
Titanic - Machine Learning from Disaster
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questions_df.drop(columns=['content_correctness'], inplace=True )<merge>
train_data = pd.read_csv('/kaggle/input/titanic/train.csv') test_data = pd.read_csv('/kaggle/input/titanic/test.csv' )
Titanic - Machine Learning from Disaster
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questions_df = pd.merge(questions_df, content_explation_agg, on='content_id', how='left',right_index=True )<drop_column>
target = train_data['Survived'] train_data.drop(['Survived'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
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del bundle_agg del part_agg del tags1_agg gc.collect()<train_model>
full_data = pd.concat([train_data, test_data], axis = 0 )
Titanic - Machine Learning from Disaster
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train_df['user_correctness'].fillna(1, inplace=True) train_df['attempt_no'].fillna(1, inplace=True) train_df.fillna(0, inplace=True )<categorify>
full_data.drop(['PassengerId', 'Ticket', 'Cabin', 'Fare'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
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MAX_SEQ = 160 skills = train_df["content_id"].unique() n_skill = len(skills) print("number skills", len(skills)) group = train_df[['user_id', 'content_id', 'answered_correctly']].groupby('user_id' ).apply(lambda r:( r['content_id'].values, r['answered_correctly'].values)) for user_id in group.index: q, qa = group[use...
%pip install nameparser full_data['Name_Title'] = full_data['Name'].apply(lambda x: HumanName(x ).title) print(full_data.Name_Title.value_counts()) unique_title = list(full_data.Name_Title.value_counts().index )
Titanic - Machine Learning from Disaster
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features = [ 'lagtime', 'lagtime_mean', 'user_lecture_cumsum', 'user_lecture_lv', 'prior_question_elapsed_time', 'delta_prior_question_elapsed_time', 'user_correctness', 'user_correct_cumcount', 'user_correct_cumsum', 'content_correctness', 'content_explation_false_mean', 'content_explation_true_mean', 'content_count',...
full_data.drop(['Name'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
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flag_lgbm=True clfs = list() params = { 'num_leaves': 350, 'max_bin':700, 'min_child_weight': 0.03454472573214212, 'feature_fraction': 0.58, 'bagging_fraction': 0.58, 'objective': 'binary', 'max_depth': -1, 'learning_rate': 0.05, "boosting_type": "gbdt", "bagging_seed": 11, "metric": 'auc', "verbosity": -1, 'reg_alpha'...
top_title = ['Mr.','Miss.','Mrs.','Master.']
Titanic - Machine Learning from Disaster
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del train_df_clf del valid_df gc.collect()<prepare_x_and_y>
full_data.replace({'Sex': {'male': 0, 'female': 1}}, inplace = True )
Titanic - Machine Learning from Disaster
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for i in range(0,num): tr_data = lgb.Dataset(trains[i][features], label=trains[i][target]) va_data = lgb.Dataset(valids[i][features], label=valids[i][target]) del trains del valids gc.collect() model = lgb.train( params, tr_data, num_boost_round=5000, valid_sets=[tr_data, va_data], early_stopping_rounds=50, feature_...
full_data.isnull().sum() [full_data.isnull().sum() > 0].sort_values(ascending = False )
Titanic - Machine Learning from Disaster
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user_sum_dict = user_agg['sum'].astype('int16' ).to_dict(defaultdict(int)) user_count_dict = user_agg['count'].astype('int16' ).to_dict(defaultdict(int)) content_sum_dict = content_agg['sum'].astype('int32' ).to_dict(defaultdict(int)) content_count_dict = content_agg['count'].astype('int32' ).to_dict(defaultdict(int)) ...
guess_ages = np.zeros(( 2,3)) for i in range(0, 2): for j in range(0, 3): guess_df = full_data[(full_data['Sex'] == i)&(full_data['Pclass'] == j+1)]['Age'].dropna() age_guess = guess_df.median() guess_ages[i,j] = int(age_guess/0.5 + 0.5)* 0.5 for i in range(0, 2): for j in range(0, 3): full_data.loc[(full_data.Age.isnu...
Titanic - Machine Learning from Disaster
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user_lecture_sum_dict = user_lecture_agg['sum'].astype('int16' ).to_dict(defaultdict(int)) user_lecture_count_dict = user_lecture_agg['count'].astype('int16' ).to_dict(defaultdict(int)) lagtime_mean_dict = lagtime_agg['mean'].astype('int32' ).to_dict(defaultdict(int)) del user_lecture_agg del lagtime_agg gc.collect()<c...
full_data['Embarked'].fillna(full_data['Embarked'].mode() [0], inplace = True )
Titanic - Machine Learning from Disaster
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attempt_no_agg=attempt_no_agg[attempt_no_agg['sum'] >1] attempt_no_sum_dict = attempt_no_agg['sum'].to_dict(defaultdict(int)) del attempt_no_agg gc.collect()<categorify>
full_data.isnull().sum() [full_data.isnull().sum() > 0].sort_values(ascending = False )
Titanic - Machine Learning from Disaster
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max_timestamp_u_dict=max_timestamp_u.set_index('user_id' ).to_dict() user_prior_question_elapsed_time_dict=user_prior_question_elapsed_time.set_index('user_id' ).to_dict() del max_timestamp_u del user_prior_question_elapsed_time gc.collect()<feature_engineering>
full_data['Family'] = full_data['SibSp'] + full_data['Parch'] + 1
Titanic - Machine Learning from Disaster
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def get_max_attempt(user_id,content_id): k =(user_id,content_id) if k in attempt_no_sum_dict.keys() : attempt_no_sum_dict[k]+=1 return attempt_no_sum_dict[k] attempt_no_sum_dict[k] = 1 return attempt_no_sum_dict[k]<choose_model_class>
full_data.loc[full_data['Family'] == 1, 'Family'] = 'Alone' full_data.loc[full_data['Family'] == 2, 'Family'] = 'Partner' full_data.loc[(full_data['Family'] != 'Alone')&(full_data['Family'] != 'Partner'), 'Family'] = 'More'
Titanic - Machine Learning from Disaster
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class FFN(nn.Module): def __init__(self, state_size=200): super(FFN, self ).__init__() self.state_size = state_size self.lr1 = nn.Linear(state_size, state_size) self.relu = nn.ReLU() self.lr2 = nn.Linear(state_size, state_size) self.dropout = nn.Dropout(0.2) def forward(self, x): x = self.lr1(x) x = self.relu(x) x...
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iter_test = env.iter_test() prior_test_df = None<data_type_conversions>
full_data.drop(['SibSp', 'Parch'], axis = 1, inplace = True) print('Types of Passengers Travelling:',full_data.Family.value_counts()) full_data.head(10 )
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%%time for(test_df, sample_prediction_df)in iter_test: if(prior_test_df is not None)&(psutil.virtual_memory().percent<90): print(psutil.virtual_memory().percent) prior_test_df[target] = eval(test_df['prior_group_answers_correct'].iloc[0]) prior_test_df = prior_test_df[prior_test_df[target] != -1].reset_index(drop=Tru...
full_data.loc[ full_data['Age'] <= 10, 'Age'] = 0 full_data.loc[(full_data['Age'] > 10)&(full_data['Age'] <= 20), 'Age'] = 1 full_data.loc[(full_data['Age'] > 20)&(full_data['Age'] <= 30), 'Age'] = 2 full_data.loc[(full_data['Age'] > 30)&(full_data['Age'] <= 40), 'Age'] = 3 full_data.loc[(full_data['Age'] > 40)&(full_d...
Titanic - Machine Learning from Disaster
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!pip install efficientnet_pytorch >> /dev/null<set_options>
dummy_df = pd.get_dummies(full_data, columns = ['Pclass', 'Embarked', 'Name_Title', 'Family'], drop_first = True )
Titanic - Machine Learning from Disaster
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random.seed(a=42) os.environ["CUDA_VISIBLE_DEVICES"] = "0" gpus = tf.config.experimental.list_physical_devices('GPU') try: for gpu in gpus: tf.config.experimental.set_memory_growth(gpu, True) except RuntimeError as e: print(e) CFG = dict( batch_size = 32, read_size = 256, crop_size = 235, net_size = 224, LR = 1e-4...
train = dummy_df[:len(train_data)] test = dummy_df[len(train_data):]
Titanic - Machine Learning from Disaster
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def get_mat(rotation, shear, height_zoom, width_zoom, height_shift, width_shift): rotation = math.pi * rotation / 180. shear = math.pi * shear / 180. def get_3x3_mat(lst): return tf.reshape(tf.concat([lst],axis=0), [3,3]) c1 = tf.math.cos(rotation) s1 = tf.math.sin(rotation) one = tf.constant([1],dtype='float32') ...
rf_clf = RandomForestClassifier(n_estimators = 100) rf_clf.fit(train, target) rf_pred = rf_clf.predict(test) print('Accuracy Score:',round(rf_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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def get_model() : model = EfficientNet.from_pretrained('efficientnet-b0', num_classes=1) model.to(device) return model def get_opt_loss_fn(model): optimizer = torch.optim.Adam(model.parameters() , lr=CFG["LR"]) loss_object = torch.nn.BCEWithLogitsLoss().to(device) return optimizer, loss_object def get_train_fn() : ...
svc_clf = SVC(C = 2, kernel = 'rbf') svc_clf.fit(train, target) svc_pred = svc_clf.predict(test) print('Accuracy Score:',round(svc_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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fold_cv_scores = [] submission_scores = [] folds = KFold(n_splits=5, shuffle = True, random_state = 42) fold_num = 0 for tr_idx, va_idx in folds.split(files_train): print(f"Starting fold: {fold_num}") no_imp = 0 CFG['batch_size'] = 32 checkpoint_filepath = f"checkpoint_{fold_num}.h5" files_train_tr = files_train[tr_i...
ada_clf = AdaBoostClassifier(n_estimators = 100) ada_clf.fit(train, target) ada_pred = ada_clf.predict(test) print('Accuracy Score:',round(ada_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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df_fold = pd.DataFrame(fold_cv_scores, columns=["Fold", "Filename", "Pred", "Label"]) df_sub = pd.DataFrame(submission_scores, columns=["Fold", "Filename", "Pred"] )<compute_test_metric>
lgbm_clf = LGBMClassifier(n_estimators = 400) lgbm_clf.fit(train, target) lgbm_pred = lgbm_clf.predict(test) print('Accuracy Score:',round(lgbm_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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df_fold = df_fold.groupby(["Filename"] ).mean().reset_index() print("CV ROCAUC: ") print(roc_auc_score(df_fold["Label"], df_fold["Pred"]))<save_to_csv>
xgb_clf = XGBClassifier(n_estimators = 200) xgb_clf.fit(train, target) xgb_pred = xgb_clf.predict(test) print('Accuracy Score:',round(xgb_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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df_sub = df_sub.groupby(["Filename"] ).mean().reset_index() df_sub = df_sub[["Filename", "Pred"]] df_sub.columns=["image_name", "target"] df_sub.to_csv("submission.csv", index=False )<load_from_csv>
base_estimators = [('lgbm',lgbm_clf), ('rf',rf_clf)] stc_clf = StackingClassifier(estimators = base_estimators, final_estimator = svc_clf) stc_clf.fit(train, target) stc_pred = stc_clf.predict(test) print('Accuracy Score:',round(stc_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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def MinMaxBestBaseStacking(input_folder, best_base, output_path): sub_base = pd.read_csv(best_base) all_files = os.listdir(input_folder) outs = [pd.read_csv(os.path.join(input_folder, f), index_col=0)for f in all_files] concat_sub = pd.concat(outs, axis=1) cols = list(map(lambda x: "target" + str(x), range(len(conca...
estimators = [('rf',rf_clf), ('xgb',xgb_clf), ('lgbm',lgbm_clf)] vot_clf = VotingClassifier(estimators = estimators, voting = 'soft') vot_clf.fit(train, target) vot_pred = vot_clf.predict(test) print('Accuracy Score:',round(vot_clf.score(train, target)*100,2))
Titanic - Machine Learning from Disaster
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MinMaxBestBaseStacking('.. /input/cs0099/', '.. /input/cs0099/submission_mean.csv', 'submission.csv') <import_modules>
submit_data = pd.read_csv('/kaggle/input/titanic/gender_submission.csv') submit_data.head()
Titanic - Machine Learning from Disaster
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import pandas as pd, numpy as np, os from sklearn.metrics import roc_auc_score import matplotlib.pyplot as plt<load_from_csv>
submit_data['Survived'] = rf_pred submit_data.head()
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<prepare_x_and_y><EOS>
submit_data.to_csv('output.csv', index = False )
Titanic - Machine Learning from Disaster
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<SOS> metric: categorizationaccuracy Kaggle data source: titanic-machine-learning-from-disaster<compute_train_metric>
import os import pandas as pd import numpy as np import seaborn as sns import matplotlib as mpl import matplotlib.pyplot as plt from scipy import stats from scipy.stats import norm, skew from sklearn.preprocessing import LabelEncoder from datetime import datetime
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all = [] for k in range(x.shape[1]): auc = roc_auc_score(OOF_CSV[0].target,x[:,k]) all.append(auc) print('Model %i has OOF AUC = %.4f'%(k,auc)) m = [np.argmax(all)]; w = []<find_best_params>
train = pd.read_csv('.. /input/titanic/train.csv') test = pd.read_csv('.. /input/titanic/test.csv' )
Titanic - Machine Learning from Disaster
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old = np.max(all); RES = 200; PATIENCE = 10; TOL = 0.0003 DUPLICATES = False print('Ensemble AUC = %.4f by beginning with model %i'%(old,m[0])) print() for kk in range(len(OOF)) : md = x[:,m[0]] for i,k in enumerate(m[1:]): md = w[i]*x[:,k] +(1-w[i])*md mx = 0; mx_k = 0; mx_w = 0 print('Searching for best model to add....
categorical = len(train.select_dtypes(include=['object'] ).columns) numerical = len(train.select_dtypes(include=['int64','float64'] ).columns) print('Total number of variables= ', categorical, 'Categorical', '+', numerical, 'Numerical', '=>', categorical+numerical, 'variables') train.head(10 )
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print('We are using models',m) print('with weights',w) print('and achieve ensemble AUC = %.4f'%old )<save_to_csv>
comb = train.append(test) comb.shape comb.isnull().sum() /comb.isnull().count() *100
Titanic - Machine Learning from Disaster
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df = OOF_CSV[0].copy() df.pred = md df.to_csv('ensemble_oof.csv',index=False )<load_from_csv>
TicketType = [] for i in range(len(comb.Ticket)) : ticket = comb.Ticket.iloc[i] for c in string.punctuation: ticket = ticket.replace(c,"") splited_ticket = ticket.split(" ") if len(splited_ticket)== 1: TicketType.append('NO') else: TicketType.append(splited_ticket[0]) comb['TicketType'] = TicketType comb['TicketTyp...
Titanic - Machine Learning from Disaster
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SUB = np.sort([f for f in FILES if 'sub' in f]) SUB_CSV = [pd.read_csv(PATH+k)for k in SUB] print('We have %i submission files...'%len(SUB)) print() ; print(SUB )<define_variables>
comb['TicketFreq'] = comb.groupby('Ticket')['Ticket'].transform('count' )
Titanic - Machine Learning from Disaster
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a = np.array([ int(x.split('_')[1].split('.')[0])for x in SUB ]) b = np.array([ int(x.split('_')[1].split('.')[0])for x in OOF ]) if len(a)!=len(b): print('ERROR submission files dont match oof files') else: for k in range(len(a)) : if a[k]!=b[k]: print('ERROR submission files dont match oof files' )<prepare_x_and_y...
comb.drop(['Ticket', 'Sex', 'Title', 'Name', 'Fare', 'Age', 'TicketType', 'LastName', 'Parch', 'SibSp', 'Crew', 'Cabin', 'Embarked', 'Group'], axis=1, inplace=True) comb.head(5 )
Titanic - Machine Learning from Disaster
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y = np.zeros(( len(SUB_CSV[0]),len(SUB))) for k in range(len(SUB)) : y[:,k] = SUB_CSV[k].target.values<save_to_csv>
n=len(train) train_df = comb.iloc[:n] test_df = comb.iloc[n:] y_train = train_df['Survived'].astype(int) X_train = train_df.drop(['Survived', 'PassengerId'], axis=1) X_test = test_df.drop(['Survived', 'PassengerId'], axis=1 )
Titanic - Machine Learning from Disaster
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df = SUB_CSV[0].copy() df.target = md2 df.to_csv('ensemble_sub.csv',index=False )<install_modules>
def stats(models, X_train, y_train): stats = {} for name, inst in models.items() : mscores = [] model_pipe = make_pipeline(StandardScaler() , inst) model_pipe.fit(X_train, y_train) acc=round(model_pipe.score(X_train, y_train)* 100, 2) mscores.append(acc) scores = cross_val_score(model_pipe, X_train, y_train, cv=10,...
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!pip install xgboost <load_from_csv>
vote = VotingClassifier(estimators=[ ('AdaBoostClassifier', AdaBoostClassifier()), ('GradientBoostingClassifier', GradientBoostingClassifier()), ('LogisticRegression', LogisticRegression()), ('SupportVectorMachines', SVC()), ('RandomForest', RandomForestClassifier()), ('KNN', KNeighborsClassifier()) ], voting='h...
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<data_type_conversions><EOS>
output= pd.DataFrame(pd.DataFrame({ "PassengerId": test_df["PassengerId"], "Survived": prediction_vote})) output.head() output.to_csv('FinalSubmission.csv', index=False )
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<SOS> metric: categorizationaccuracy Kaggle data source: titanic-machine-learning-from-disaster<data_type_conversions>
import numpy as np import pandas as pd import pandas_summary as ps from category_encoders import WOEEncoder
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train['sex'] = train['sex'].astype("category" ).cat.codes +1 train['anatom_site_general_challenge'] = train['anatom_site_general_challenge'].astype("category" ).cat.codes +1 train.head()<data_type_conversions>
warnings.filterwarnings("ignore") %matplotlib inline
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test['sex'] = test['sex'].astype("category" ).cat.codes +1 test['anatom_site_general_challenge'] = test['anatom_site_general_challenge'].astype("category" ).cat.codes +1 test.head()<prepare_x_and_y>
folder = '.. /input/titanic/' train_df = pd.read_csv(folder + 'train.csv') test_df = pd.read_csv(folder + 'test.csv') sub_df = pd.read_csv(folder + 'gender_submission.csv' )
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x_train = train[['sex', 'age_approx','anatom_site_general_challenge']] y_train = train['target'] x_test = test[['sex', 'age_approx','anatom_site_general_challenge']] train_DMatrix = xgb.DMatrix(x_train, label= y_train) test_DMatrix = xgb.DMatrix(x_test )<init_hyperparams>
train_df['Sex'] = train_df['Sex'].apply(lambda x: 1 if str(x)== 'male' else 0) test_df['Sex'] = test_df['Sex'].apply(lambda x: 1 if str(x)== 'male' else 0 )
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param = { 'booster':'gbtree', 'eta': 0.3, 'num_class': 2, 'max_depth': 8 } epochs = 100<choose_model_class>
train_df.drop('PassengerId', axis=1, inplace=True) test_df.drop('PassengerId', axis=1, inplace=True )
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clf = xgb.XGBClassifier(n_estimators=1000, max_depth=8, objective='multi:softprob', seed=0, nthread=-1, learning_rate=0.015, num_class = 2, scale_pos_weight =(32542/584))<train_model>
y = train_df['Survived'] train_df.drop('Survived', axis=1, inplace=True )
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clf.fit(x_train, y_train) <predict_on_test>
y.value_counts()
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pred_train = clf.predict(x_train )<compute_test_metric>
y.value_counts(normalize=True )
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accuracy_score(pred_train, y_train )<predict_on_test>
for data in(train_df, test_df): data['FamilySize'] = data['Parch'] + data['SibSp']
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sub.target = clf.predict_proba(x_test)[:,1] sub_tabular = sub.copy()<load_from_csv>
for data in(train_df, test_df): data['Parch'] = data['Parch'] / data['FamilySize'] data['Parch'].fillna(-1, inplace=True) data['SibSp'] = data['SibSp'] / data['FamilySize'] data['SibSp'].fillna(-1, inplace=True )
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sub_public_merge = pd.read_csv('/kaggle/input/incredible-tpus-finetune-effnetb0-b6-at-once/submission_models_blended.csv' )<feature_engineering>
for data in(train_df, test_df): data['Fare'].fillna(train_df.groupby(['Embarked', 'Pclass'])['Fare'].transform('median'), inplace=True) for data in(train_df, test_df): data['Embarked'].fillna(train_df['Embarked'].mode() , inplace=True )
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sub.target = sub_public_merge.target *0.80 + sub_tabular.target *0.20<save_to_csv>
class AgeFeature(BaseEstimator, TransformerMixin): def fit(self, X, y=None): return self def transform(self, X, y=None): X['Initial'] = 0 for i in X: X['Initial'] = X.Name.str.extract('([A-Za-z]+)\.') X['Initial'].replace( ['Dona','Mlle','Mme','Ms','Dr','Major','Lady','Countess','Jonkheer','Col','Rev','Capt','Sir',...
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sub.to_csv('submission.csv', index = False )<set_options>
for data in(train_df, test_df): data['Is_Married'] = 0 data['Is_Married'].loc[data['Initial'] == 'Mrs'] = 1
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%matplotlib inline warnings.filterwarnings(action='ignore', category=DeprecationWarning, module='sklearn') warnings.simplefilter('ignore') def seed_everything(SEED): np.random.seed(SEED) os.environ['PYTHONHASHSEED'] = str(SEED )<define_variables>
train_df['Cabin'] = train_df['Cabin'].apply(lambda x: str(x)[0] ).apply(lambda x: 'n' if x == 'T' else x) test_df['Cabin'] = test_df['Cabin'].apply(lambda x: str(x)[0] ).apply(lambda x: 'n' if x == 'T' else x) train_df['Cabin'].unique() , test_df['Cabin'].unique()
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FOLDS = 3 SEED = 123 Setup_Parameters = True seed_everything(SEED) file_add_list = [1,2,3,4,5] pesudo_label = True test_pipeline = True<load_from_csv>
woe_encoder = WOEEncoder(cols=['Cabin', 'Embarked', 'Initial']) woe_encoder.fit(train_df, y) train_df = woe_encoder.transform(train_df) test_df = woe_encoder.transform(test_df )
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BASE_PATH = '.. /input/siim-isic-melanoma-classification' train_metadata = pd.read_csv(os.path.join(BASE_PATH, 'train.csv')) test_metadata = pd.read_csv(os.path.join(BASE_PATH, 'test.csv')) sample_submission = pd.read_csv(os.path.join(BASE_PATH, 'sample_submission.csv')) tfrecord_number_df = pd.read_csv('.. /input/stac...
train_df.drop(['Name', 'Ticket'], axis=1, inplace=True) test_df.drop(['Name', 'Ticket'], axis=1, inplace=True )
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print('Unique values in column with frequency : ') print(' sex : ', dict(train_metadata.sex.value_counts())) print(' age_approx : ', dict(train_metadata.age_approx.value_counts())) print(' anatom_site_general_challenge : ', dict(train_metadata.anatom_site_general_challenge.value_counts())) print(' diagnosis : ', dict(...
train_df.columns.to_list()
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print('Unique values in column with frequency : ') print(' sex : ', dict(test_metadata.sex.value_counts())) print(' age_approx : ', dict(test_metadata.age_approx.value_counts())) print(' anatom_site_general_challenge : ', dict(test_metadata.anatom_site_general_challenge.value_counts()))<categorify>
train_df.columns.to_list()
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train = train_metadata.copy() train['age_approx'] = train['age_approx'].fillna(train.age_approx.mean()) sex_code = pd.get_dummies(train.sex, prefix='sex') anatom_site_general_challenge_code = pd.get_dummies(train.anatom_site_general_challenge, prefix='anatom_site') age_aprox_normalized =(train.age_approx-train.age_a...
dfs = ps.DataFrameSummary(train_df) dfs.summary()
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def add_OOF_pred(train_coded,num): for n in file_add_list: df_ = pd.read_csv(f'.. /input/95-cv-oof-submission/oof_{n}.csv') train_coded = pd.merge(train_coded, df_[['image_name','pred']], on="image_name",how='right') train_coded.rename({'pred': f'pred_{n}'}, axis=1, inplace=True) return train_coded train_coded = pd....
dfs = ps.DataFrameSummary(test_df) dfs.summary()
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test = test_metadata.copy() test['age_approx'] = test['age_approx'].fillna(test.age_approx.mean()) sex_code = pd.get_dummies(test.sex, prefix='sex') anatom_site_general_challenge_code = pd.get_dummies(test.anatom_site_general_challenge, prefix='anatom_site') age_aprox_normalized =(test.age_approx-test.age_approx.mea...
scaler = StandardScaler().fit(train_df) scaled_train_df = scaler.transform(train_df) scaled_test_df = scaler.transform(test_df )
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def add_submission_pred(test_coded,num): for n in file_add_list: df_ = pd.read_csv(f'.. /input/95-cv-oof-submission/submission_{n}.csv') test_coded = pd.merge(test_coded, df_[['image_name','target']], on="image_name",how='right') test_coded.rename({'target': f'pred_{n}'}, axis=1, inplace=True) return test_coded test...
tsne = TSNE(perplexity=30) train_tsne_transformed = tsne.fit_transform(scaled_train_df) test_tsne_transformed = tsne.fit_transform(scaled_test_df )
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def crossValidate(CLF,X=train_coded,X_test=test_coded,FOLDS = 5,SEED = 123,show_roc_curve = False,pesudo_label = False): print(Fore.YELLOW) print(' model_name = type(CLF ).__name__ print(' print(' CV_Score = [] Val_preds = [] Val_imagenames = [] val_targets = [] CV_Score_pesudo = [] Val_preds_pesudo = [] Val_imagename...
p = 0.9 k = 350 cat=[] models = dict() trains = [] preds = [] folds = [] valid_scores =dict() skf = StratifiedKFold(n_splits=9, shuffle=True, random_state=7) for num, spl in enumerate(skf.split(train_df, y)) : train_index, val_index = spl[0], spl[1] x_train_1, x_valid_1 = train_df.iloc[train_index, :], train_df.iloc[v...
Titanic - Machine Learning from Disaster
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clf1 = lgb.LGBMClassifier(max_depth=5, metric="auc", n_estimators=100, num_leaves=5, boosting_type="gbdt", learning_rate=0.1, feature_fraction=0.05, colsample_bytree=0.1, bagging_fraction=0.8, bagging_freq=2, reg_lambda=0.2 )<choose_model_class>
model = LogisticRegression(penalty='l1', solver='saga') model.fit(pd.DataFrame(np.array(trains)).T, y) target = model.predict(pd.DataFrame(np.array(preds)).T )
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clf2 = LogisticRegression( C= 1.0, class_weight=None, dual= False, fit_intercept= True, intercept_scaling= 1, l1_ratio= None, max_iter= 100, multi_class= 'auto', n_jobs= None, penalty= 'l2', random_state= None, solver= 'lbfgs', tol= 0.0001, verbose= 0, warm_start= False )<choose_model_class>
sub_df['Survived'] = target
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clf3 = XGBRegressor(base_score=0.5, booster=None, colsample_bylevel=1, colsample_bynode=1, colsample_bytree=0.8, gamma=1, gpu_id=-1, importance_type='gain', interaction_constraints=None, learning_rate=0.002, max_delta_step=0, max_depth=10, min_child_weight=1, missing=None, monotone_constraints=None, n_estimators=700, n...
sub_df.to_csv("submission.csv", index=False )
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clf4 = GaussianNB( priors= None, var_smoothing= 1e-09 )<choose_model_class>
warnings.filterwarnings('ignore' )
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clf5 = RandomForestClassifier( bootstrap= True, ccp_alpha= 0.0, class_weight= None, criterion= 'gini', max_depth= 5, max_features= 'auto', max_leaf_nodes= 30, max_samples= None, min_impurity_decrease= 0.0, min_impurity_split= None, min_samples_leaf= 2, min_samples_split= 100, min_weight_fraction_leaf= 0.0, n_estimator...
train = pd.read_csv('/kaggle/input/titanic/train.csv') test = pd.read_csv('/kaggle/input/titanic/test.csv')
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clf9 = KNeighborsRegressor(algorithm= 'auto', leaf_size= 30, metric= 'minkowski', metric_params= None, n_jobs= None, n_neighbors= 10, p= 5, weights= 'uniform' )<choose_model_class>
passengerId = test.PassengerId titanic = train.append(test, ignore_index=True )
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clf10 = DecisionTreeRegressor(ccp_alpha= 0.0, criterion= 'mse', max_depth= 5, max_features= 'auto', max_leaf_nodes= 30, min_impurity_decrease= 0.0, min_impurity_split= None, min_samples_leaf= 2, min_samples_split= 100, min_weight_fraction_leaf= 0.0, presort= 'deprecated', random_state= SEED, splitter= 'best' )<choose_m...
train_idx = len(train) test_idx = len(titanic)- len(test )
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clf11 = GradientBoostingRegressor()<choose_model_class>
titanic.drop('PassengerId', axis=1, inplace=True )
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SCF = StackingClassifier(classifiers=[clf1, clf5], meta_classifier=clf2, use_probas=True, average_probas=True )<choose_model_class>
titanic['Title'] = titanic.Name.apply(lambda name: name.split(',')[1].split('.')[0].strip()) titanic.head()
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if test_pipeline: pipelines = [] pipelines.append(( 'LGBMClassifier', Pipeline([('LGBMClassifier',clf1)]))) pipelines.append(( 'LogisticRegression', Pipeline([('LogisticRegression',clf2)]))) pipelines.append(( 'XGBRegressor', Pipeline([('XGBRegressor',clf3)]))) pipelines.append(( 'GaussianNB', Pipeline([('GaussianNB...
print("There are {} unique titles.".format(titanic.Title.nunique())) print(" ", titanic.Title.unique() )
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select_classifier = clf2 select_classifier.get_params()<prepare_x_and_y>
normalized_titles = { "Capt": "Officer", "Col": "Officer", "Major": "Officer", "Jonkheer": "Royalty", "Don": "Royalty", "Sir" : "Royalty", "Dr": "Officer", "Rev": "Officer", "the Countess":"Royalty", "Dona": "Royalty", "Mme": "Mrs", "Mlle": "Miss", "Ms": "Mrs", "Mr" : "Mr", "Mrs" : "Mrs", "Miss" : "Miss", "Master" : "M...
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if Setup_Parameters: X_train = train_coded.drop('target',axis=1 ).iloc[:,1:] y_train = train_coded['target'] params = dict( C = [0.001, 0.01, 0.1, 1, 10], max_iter = [100,150,50] ) grid = GridSearchCV(estimator=select_classifier, param_grid=params, cv=FOLDS, scoring='roc_auc', refit='AUC', n_jobs = -1) grid.fit(X_t...
titanic.Title = titanic.Title.map(normalized_titles) print(titanic.Title.value_counts() )
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%matplotlib inline<define_variables>
titanic.Age = grouped.Age.apply(lambda x: x.fillna(x.median())) titanic.info()
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np.random.seed(42) random.seed(42 )<load_from_csv>
titanic.Cabin = titanic.Cabin.fillna('U' )
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oof_01 = pd.read_csv('.. /input/melanoma-oof-and-sub/oof_0.csv') test_01 = pd.read_csv('.. /input/melanoma-oof-and-sub/sub_0.csv') oof_01 = oof_01.sort_values(by=['image_name'], ascending=True ).reset_index(drop=True) test_01 = test_01.sort_values(by=['image_name'], ascending=True ).reset_index(drop=True) oof_02 = ...
most_embarked = titanic.Embarked.value_counts().index[0] titanic.Embarked = titanic.Embarked.fillna(most_embarked )
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blend_train = [] blend_test = [] blend_train.append(oof_01.pred) blend_train.append(oof_02.pred) blend_train.append(oof_03.pred) blend_train.append(oof_04.pred) blend_train.append(oof_05.pred) blend_train.append(oof_06.pred) blend_train.append(oof_07.pred) blend_train.append(oof_08.pred) blend_train.append(oof_...
titanic.Survived.value_counts(normalize=True )
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def roc_min_func(weights): final_prediction = 0 for weight, prediction in zip(weights, blend_train): final_prediction += weight * prediction return roc_auc_score(np.array(oof_01.target), final_prediction) print(' Finding Blending Weights...') res_list = [] weights_list = [] for k in range(1000): starting_values = np....
group_by_sex = titanic.groupby('Sex') group_by_sex.Survived.mean()
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print(' Ensemble Score: {best_score}'.format(best_score=bestSC)) print(' Best Weights: {weights}'.format(weights=bestWght)) train_prices = np.zeros(len(blend_train[0])) test_prices = np.zeros(len(blend_test[0])) print(' Your final model:') for k in range(len(blend_test)) : print(' %.6f * model-%d' %(weights[k],(k + 1)...
group_class_sex = titanic.groupby(['Pclass', 'Sex']) group_class_sex.Survived.mean()
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test_01.target =(test_01.target.values*bestWght[0] + test_02.target.values*bestWght[1] + test_03.target.values*bestWght[2] + test_04.target.values*bestWght[3] + test_05.target.values*bestWght[4] + test_06.target.values*bestWght[5] + test_07.target.values*bestWght[6] + test_08.target.values*bestWght[7] + test_09.target....
titanic['FamilySize'] = titanic.Parch + titanic.SibSp + 1
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LABELS = ["target"] all_files = glob.glob(".. /input/pseudolabelmodels/*.csv" )<load_from_csv>
titanic.Cabin = titanic.Cabin.map(lambda x: x[0]) titanic.Cabin.value_counts(normalize=True )
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outs = [pd.read_csv(f, index_col=0)for f in all_files] concat_sub = pd.concat(outs, axis=1) cols = list(map(lambda x: "m" + str(x), range(len(concat_sub.columns)))) concat_sub.columns = cols concat_sub.reset_index(inplace=True )<feature_engineering>
titanic.Sex = titanic.Sex.map({"male": 0, "female":1} )
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warnings.filterwarnings("ignore") rank = np.tril(concat_sub.iloc[:,1:].corr().values,-1) m =(rank>0 ).sum() m_gmean, s = 0, 0 for n in range(min(rank.shape[0],m)) : mx = np.unravel_index(rank.argmin() , rank.shape) w =(m-n)/(m+n/10) m_gmean += w*(np.log(concat_sub.iloc[:,mx[0]+1])+np.log(concat_sub.iloc[:,mx[1]+1])...
pclass_dummies = pd.get_dummies(titanic.Pclass, prefix="Pclass") title_dummies = pd.get_dummies(titanic.Title, prefix="Title") cabin_dummies = pd.get_dummies(titanic.Cabin, prefix="Cabin") embarked_dummies = pd.get_dummies(titanic.Embarked, prefix="Embarked" )
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predict_list = [] predict_list.append(pd.read_csv('.. /input/pseudolabelmodels/submission-9350-pseudo-rohit.csv')[LABELS].values) predict_list.append(pd.read_csv('.. /input/pseudolabelmodels/submission-9351-pseudo-rohit.csv')[LABELS].values) predict_list.append(pd.read_csv('.. /input/pseudolabelmodels/submission-9373...
titanic_dummies = pd.concat([titanic, pclass_dummies, title_dummies, cabin_dummies, embarked_dummies], axis=1) titanic_dummies.drop(['Pclass', 'Title', 'Cabin', 'Embarked', 'Name', 'Ticket'], axis=1, inplace=True) titanic_dummies.head()
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warnings.filterwarnings("ignore") print("Rank averaging on ", len(predict_list), " files") predictions = np.zeros_like(predict_list[0]) for predict in predict_list: for i in range(1): predictions[:, i] = np.add(predictions[:, i], rankdata(predict[:, i])/predictions.shape[0]) predictions = predictions /len(predict_l...
train = titanic_dummies[ :train_idx] test = titanic_dummies[test_idx: ] train.Survived = train.Survived.astype(int )
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warnings.filterwarnings("ignore") print("Rank averaging on ", len(predict_list_2), " files") predictions_2 = np.zeros_like(predict_list_2[0]) for predict_2 in predict_list_2: for i in range(1): predictions_2[:, i] = np.add(predictions_2[:, i], rankdata(predict_2[:, i])/predictions_2.shape[0]) predictions_2 = predic...
X = train.drop('Survived', axis=1 ).values y = train.Survived.values
Titanic - Machine Learning from Disaster