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df_res[['image_name', 'pred']].groupby('image_name' ).mean().reset_index().rename({'pred': 'target'}, axis=1 ).to_csv("submission_6_20.csv", index=False )<import_modules>
modelpred2 = vot_hard.predict(y_train) sub2 = pd.DataFrame(columns = ['PassengerId','Survived']) sub2['PassengerId'] = result['PassengerId'] sub2['Survived'] = modelpred2 sub2.to_csv('HardVoting(NO HT ).csv',index = False )
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import numpy as np import pandas as pd import scipy.stats import matplotlib.pyplot as plt from scipy.stats import spearmanr from matplotlib.colors import LogNorm from sklearn.metrics import roc_auc_score from sklearn.model_selection import StratifiedKFold import tensorflow as tf<set_options>
Accuracy = [] Estimator = []
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orange_black = [ ' ] plt.style.use('ggplot' )<load_from_csv>
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n_tta = 1500 file = 'tta-exploration-128x128-b0' all_tta_test = pd.read_csv('.. /input/'+file+'/all_tta_test.csv') all_tta_test.columns.values[0] = 'image_name' submission = pd.read_csv('.. /input/'+file+'/submission.csv') tta_keys = [str(i)for i in range(n_tta)] oof = pd.read_csv('.. /input/'+file+'/oof.csv' )<conca...
lr = LogisticRegression(C = 100,penalty = 'l2', solver = 'newton-cg',class_weight = 'dict', max_iter = 900) Estimator.append(( 'lr',LogisticRegression(C = 1,penalty = 'l2', solver = 'newton-cg',class_weight = 'dict', max_iter = 900))) cv = cross_val_score(lr,x_train,x_test,cv=10) Accuracy1 = cv.mean() Accuracy.appen...
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def IQR(data,ax=1): return np.subtract(*np.percentile(data, [75, 25],axis=ax))<define_variables>
lr.fit(x_train,x_test) lr.score(y_train,y_test )
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tta_arr = np.array(tta_preds) n_samp = tta_arr.shape[1] average_t=[];max_t=[];std_t=[] error_std=[] for TTA in range(2,100): end = int(n_tta//TTA) samples = tta_arr[:,:TTA*end].reshape(-1,TTA) all_avs = np.mean(samples,axis=1 ).reshape(len(tta_arr),end) if all_avs.shape[1]>10: all_stds = np.std(samples,axis=1 ).res...
model11pred = lr.predict(y_train) submission11 = pd.DataFrame(columns = ['PassengerId','Survived']) submission11['PassengerId'] = result['PassengerId'] submission11['Survived'] = model11pred submission11.to_csv('LogisticRegression(HT ).csv',index = False )
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tta_preds = oof[tta_keys] mns = dict( amean = np.mean(tta_preds,axis=1), gmean = scipy.stats.gmean(tta_preds,axis=1), median = np.median(tta_preds,axis=1) ) for mn in mns: print('{} AUC = {}'.format(mn,roc_auc_score(oof['target'],mns[mn])) )<save_to_csv>
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def make_sub(func,name='submission'): submission = pd.DataFrame(dict(image_name=test_tta['0'], target=func(preds_all,axis=1))) submission.to_csv(name+'.csv', index=False) submission.head() test_tta = pd.read_csv('.. /input/tta-exploration-128x128-b0/all_tta_test.csv') FOLDS=3; n_test_tta=11 preds_all = [np.mean(test...
svc = LinearSVC(C = 0.1,penalty = 'l2', loss = 'hinge',class_weight = 'balanced') cv = cross_val_score(svc,x_train,x_test,cv=10) Accuracy2 = cv.mean() Accuracy.append(Accuracy2) print(cv) print(cv.mean() )
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n_tta = 11 FOLDS=3 files = ['tta-exploration-128x128-b0','tta-exploration-128x128-b3'] all_tta_list = [pd.read_csv('.. /input/'+file+'/all_tta_test.csv')for file in files] for df in all_tta_list: df.columns.values[0] = 'image_name' sub_list= [pd.read_csv('.. /input/'+file+'/submission.csv')for file in files] tta_keys =...
svc.fit(x_train,x_test) svc.score(y_train,y_test )
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def set_right(df,tta_keys): df['std']=np.std(df[tta_keys],axis=1) return df.drop(tta_keys,axis=1) oof1 = [set_right(df,tta_keys ).set_index('image_name')for df in oof_list]<concatenate>
model12pred = svc.predict(y_train) submission12 = pd.DataFrame(columns = ['PassengerId','Survived']) submission12['PassengerId'] = result['PassengerId'] submission12['Survived'] = model12pred submission12.to_csv('SVCLinear(HT ).csv',index = False )
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df_oof = pd.concat(oof1,axis=1) labels = df_oof['target'].iloc[:,0]<find_best_params>
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roc=[] WGTS=np.linspace(0,1,11) for wgt in WGTS: pred = wgt*df_oof['pred'].iloc[:,0] +(1-wgt)*df_oof['pred'].iloc[:,1] roc+=[roc_auc_score(labels,pred)] best_roc = max(roc) loc = np.where(roc==best_roc)[0][0] best_weight = WGTS[loc] print('The best roc = {:.6f} with weights :({},{})'.format(best_roc, best_weight,(1-b...
SVM_all = svm.SVC(C = 1,degree = 2, kernel = 'poly',class_weight = 'balanced',gamma = 'scale') cv = cross_val_score(svc,x_train,x_test,cv=10) Accuracy3 = cv.mean() Accuracy.append(Accuracy3) print(cv) print(cv.mean() )
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from xgboost import XGBClassifier<prepare_x_and_y>
SVM_all.fit(x_train,x_test) SVM_all.score(y_train,y_test )
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ids = df_oof.index fold_finder = df_oof['fold'].iloc[:,0] def get_oof(DATA,LABELS,folds=10,PRINT=0,SEED=42): skf = StratifiedKFold(n_splits=FOLDS,shuffle=True,random_state=SEED) oof_pred = []; oof_tar = []; oof_val = []; oof_names = []; oof_folds = [] for fold,(idxT,idxV)in enumerate(skf.split(DATA,LABELS)) : X = DATA...
model13pred = SVM_all.predict(y_train) submission13 = pd.DataFrame(columns = ['PassengerId','Survived']) submission13['PassengerId'] = result['PassengerId'] submission13['Survived'] = model13pred submission13.to_csv('PolynomialSVM(HT ).csv',index = False )
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FOLDS = 20 print('Including confidence estimate:') get_oof(np.concatenate(( df_oof['pred'],df_oof['std']),axis=1),labels,folds=FOLDS) print(' Only predictions:') get_oof(np.array(df_oof['pred']),labels,folds=FOLDS )<set_options>
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warnings.filterwarnings('ignore') seed_val = 42 random.seed(seed_val) np.random.seed(seed_val )<set_options>
dt = DecisionTreeClassifier(class_weight = 'balanced',criterion = 'entropy',max_depth = 5,min_samples_split = 2,splitter = 'best',random_state = 6) Estimator.append(( 'dt',DecisionTreeClassifier(class_weight = 'balanced',criterion = 'entropy',max_depth = 5,min_samples_split = 2,splitter = 'best',random_state = 6))) c...
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black_red = [ ' ] plt.style.use('fivethirtyeight' )<load_from_csv>
dt.fit(x_train,x_test) dt.score(y_train,y_test )
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train = pd.read_csv('.. /input/melanomaextendedtabular/external_upsampled_tabular.csv') test = pd.read_csv('.. /input/melanomaextendedtabular/test_tabular.csv') sample = pd.read_csv('.. /input/melanomaextendedtabular/sample_submission.csv' )<rename_columns>
model14pred = SVM_all.predict(y_train) submission14 = pd.DataFrame(columns = ['PassengerId','Survived']) submission14['PassengerId'] = result['PassengerId'] submission14['Survived'] = model14pred submission14.to_csv('DecisionTrees(HT ).csv',index = False )
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train.columns = [ 'img_name', 'sex', 'age', 'location', 'target','width','height' ] test.columns = ['img_name', 'sex', 'age', 'location','width','height'] <categorify>
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for df in [train, test]: df['location'].fillna('unknown', inplace=True) train['sex'].fillna('unknown', inplace=True) train['age'].fillna(-1, inplace=True )<statistical_test>
mnb = MultinomialNB(alpha = 1,fit_prior = True) Estimator.append(( 'mnb',MultinomialNB(alpha = 1,fit_prior = True))) cv = cross_val_score(mnb,x_train,x_test,cv=10) Accuracy5 = cv.mean() Accuracy.append(Accuracy5) print(cv) print(cv.mean() )
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ids_train = train.location.values ids_test = test.location.values ids_train_set = set(ids_train) ids_test_set = set(ids_test) location_not_overlap = list(ids_train_set.symmetric_difference(ids_test_set)) n_overlap = len(location_not_overlap) if n_overlap == 0: print( f'There are no different body parts occuring bet...
mnb.fit(x_train,x_test) mnb.score(y_train,y_test )
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train.replace(['anterior torso','lateral torso','posterior torso'], 'torso', inplace=True )<data_type_conversions>
model15pred = mnb.predict(y_train) submission15 = pd.DataFrame(columns = ['PassengerId','Survived']) submission15['PassengerId'] = result['PassengerId'] submission15['Survived'] = model15pred submission15.to_csv('MultinomialNB(HT ).csv',index = False )
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train['res']= train['width'].astype(str)+'x'+train['height'].astype(str) test['res']= test['width'].astype(str)+'x'+test['height'].astype(str )<drop_column>
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train.drop(['res'], axis=1, inplace=True) test.drop(['res'], axis=1, inplace=True )<categorify>
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sex_dummies = pd.get_dummies(train['sex'], prefix='sex') train = pd.concat([train, sex_dummies], axis=1) sex_dummies = pd.get_dummies(test['sex'], prefix='sex') test = pd.concat([test, sex_dummies], axis=1) train.drop(['sex'], axis=1, inplace=True) test.drop(['sex'], axis=1, inplace=True )<categorify>
rf = RandomForestClassifier(oob_score = True,n_estimators =650 ,min_samples_split = 4,max_features = 'log2',max_depth =6,criterion = 'gini',class_weight = 'balanced_subsample',bootstrap = True) Estimator.append(( 'rf',RandomForestClassifier(oob_score = True,n_estimators =650 ,min_samples_split = 4,max_features = 'log2...
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anatom_dummies = pd.get_dummies(train['location'], prefix='anatom') train = pd.concat([train, anatom_dummies], axis=1) anatom_dummies = pd.get_dummies(test['location'], prefix='anatom') test = pd.concat([test, anatom_dummies], axis=1) train.drop('location', axis=1, inplace=True) test.drop(['location'], axis=1, inp...
rf.fit(x_train,x_test) rf.score(y_train,y_test )
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for df in [train, test]: df.drop('img_name', axis=1, inplace=True )<import_modules>
model16pred = rf.predict(y_train) submission16 = pd.DataFrame(columns = ['PassengerId','Survived']) submission16['PassengerId'] = result['PassengerId'] submission16['Survived'] = model16pred submission16.to_csv('RandomForest(HT ).csv',index = False )
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import xgboost as xgb from sklearn.model_selection import StratifiedKFold, train_test_split, cross_val_score, cross_validate from sklearn.metrics import roc_auc_score, roc_curve<prepare_x_and_y>
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X = train.drop('target', axis=1) y = train.target<split>
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X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.15, stratify=y, random_state=42) cv = StratifiedKFold(5, shuffle=True, random_state=42 )<choose_model_class>
gbc = GradientBoostingClassifier(loss = 'exponential',n_estimators =200 ,min_samples_split = 4,max_features = 'auto',max_depth =9,learning_rate =.01,subsample =.1) Estimator.append(( 'gbc',GradientBoostingClassifier(loss = 'exponential',n_estimators =200 ,min_samples_split = 4,max_features = 'auto',max_depth =9,learni...
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xg = xgb.XGBClassifier( n_estimators=750, min_child_weight=0.81, learning_rate=0.025, max_depth=2, subsample=0.80, colsample_bytree=0.42, gamma=0.10, random_state=42, n_jobs=-1, )<define_variables>
gbc.fit(x_train,x_test) gbc.score(y_train,y_test )
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estimators = [xg]<compute_train_metric>
model17pred = gbc.predict(y_train) submission17 = pd.DataFrame(columns = ['PassengerId','Survived']) submission17['PassengerId'] = result['PassengerId'] submission17['Survived'] = model17pred submission17.to_csv('GradientBoosting(HT ).csv',index = False )
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def model_check(X_train, y_train, estimators, cv): model_table = pd.DataFrame() row_index = 0 for est in estimators: MLA_name = est.__class__.__name__ model_table.loc[row_index, 'Model Name'] = MLA_name cv_results = cross_validate(est, X_train, y_train, cv=cv, scoring='roc_auc', return_train_score=True, n_jobs=-1) mod...
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xg.fit(X_train, y_train) validation = xg.predict_proba(X_test)[:, 1] roc_auc_score(y_test, validation )<prepare_x_and_y>
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adv_train = train.copy() adv_train.drop('target', axis=1, inplace=True) adv_test = test.copy() adv_train['dataset_label'] = 0 adv_test['dataset_label'] = 1 adv_master = pd.concat([adv_train, adv_test], axis=0) adv_X = adv_master.drop('dataset_label', axis=1) adv_y = adv_master['dataset_label']<split>
xgb = XGBClassifier(colsample_bytree =.6,eta = 0.5,gamma = 1,max_depth = 5,min_child_weight = 6,subsample = 1) Estimator.append(( 'xgb',XGBClassifier(colsample_bytree =.6,eta = 0.5,gamma = 1,max_depth = 5,min_child_weight = 6,subsample = 1))) cv = cross_val_score(xgb,x_train,x_test,cv=10) Accuracy8 = cv.mean() Accur...
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adv_X_train, adv_X_test, adv_y_train, adv_y_test = train_test_split(adv_X, adv_y, test_size=0.4, stratify=adv_y, random_state=42 )<train_model>
xgb.fit(x_train,x_test) gbc.score(y_train,y_test )
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xg_adv = xgb.XGBClassifier( random_state=42, n_jobs=-1, ) xg_adv.fit(adv_X_train, adv_y_train) validation = xg_adv.predict_proba(adv_X_test)[:,1]<split>
model18pred = xgb.predict(y_train) submission18 = pd.DataFrame(columns = ['PassengerId','Survived']) submission18['PassengerId'] = result['PassengerId'] submission18['Survived'] = model18pred submission18.to_csv('XGBoosting(HT ).csv',index = False )
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adv_X.drop(['sex_unknown', 'height', 'width'], axis=1, inplace=True) adv_X_train, adv_X_test, adv_y_train, adv_y_test = train_test_split(adv_X, adv_y, test_size=0.4, stratify=adv_y, random_state=42) xg_adv.fit(adv_X_train, adv_y_train) validation = xg_adv.predict_proba(adv_X_test)[:,1]<drop_column>
x_train1 = final[:891] feature_scaler = StandardScaler() x_train1 = feature_scaler.fit_transform(x_train1) y_train1 = final[891:] feature_scaler = StandardScaler() y_train1 = feature_scaler.fit_transform(y_train1 )
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X_train.drop(['sex_unknown', 'width','height'], axis=1, inplace=True) test.drop(['width','height'], axis=1, inplace=True )<choose_model_class>
Krange1 = range(1,20) scores1 = {} scores_list1 = [] for k in Krange1: knn = KNeighborsClassifier(n_neighbors = k) knn.fit(x_train1,x_test) y_pred = knn.predict(y_train1) scores1[k] = metrics.accuracy_score(result['Survived'],y_pred) scores_list1.append(metrics.accuracy_score(result['Survived'],y_pred)) plt.plot(K...
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xg= xgb.XGBClassifier( n_estimators=750, learning_rate=0.015, min_child_weight= 59, max_delta_step= 6, max_depth= 6, subsample= 0.751, colsample_bytree= 0.8595, gamma= 0, reg_lambda= 37, random_state=42, n_jobs=-1, )<save_to_csv>
knn = KNeighborsClassifier(n_neighbors = 11) Estimator.append(( 'knn',KNeighborsClassifier(n_neighbors = 13))) cv = cross_val_score(knn,x_train1,x_test,cv=10) Accuracy9 = cv.mean() Accuracy.append(Accuracy9) print(cv) print(cv.mean() )
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xg.fit(X_train, y_train) predictions = xg.predict_proba(test)[:, 1] meta_df = pd.DataFrame(columns=['image_name', 'target']) meta_df['image_name'] = sample['image_name'] meta_df['target'] = predictions meta_df.to_csv('external_tabular_predicts.csv', header=True, index=False )<save_to_csv>
knn.fit(x_train1,x_test) knn.score(y_train1,y_test )
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effnet = pd.read_csv('.. /input/blended-effnets-from-previous-notebook/blended_effnets.csv') meta = pd.read_csv('./external_tabular_predicts.csv') sample['target'] =( effnet['target'] * 0.9 + meta['target'] * 0.1 ) sample.to_csv('external_meta_ensembled.csv', header=True, index=False )<install_modules>
model19pred = knn.predict(y_train) submission19 = pd.DataFrame(columns = ['PassengerId','Survived']) submission19['PassengerId'] = result['PassengerId'] submission19['Survived'] = model19pred submission19.to_csv('KNN(StdScaler ).csv',index = False )
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!pip install -q efficientnet >> /dev/null<import_modules>
models = ['Logistic Regression','SVM Linear Classifier','SVM Polynomial Classifier','Decision Tree','Multinomial NB','Random Forest Classifier','Gradient Boost Classifier','XG Boosting','K-Nearest Neighbors(StdScaler)'] total = list(zip(models,Accuracy)) output2 = pd.DataFrame(total, columns = ['Models after Hyperparam...
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import pandas as pd, numpy as np from kaggle_datasets import KaggleDatasets import tensorflow as tf, re, math import tensorflow.keras.backend as K import efficientnet.tfkeras as efn from sklearn.model_selection import KFold from sklearn.metrics import roc_auc_score import matplotlib.pyplot as plt<load_from_csv>
vot_soft1 = VotingClassifier(estimators = Estimator, voting ='soft') vot_soft1.fit(x_train, x_test) y_pred = vot_soft1.predict(y_train) vot_soft1.score(y_train,y_test) modelpred3 = vot_soft1.predict(y_train) sub3 = pd.DataFrame(columns = ['PassengerId','Survived']) sub3['PassengerId'] = result['PassengerId'] sub3...
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<load_from_csv>
vot_soft1.fit(x_train, x_test) vot_soft1.score(y_train,y_test )
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<load_from_csv>
vot_hard1 = VotingClassifier(estimators = Estimator, voting ='hard') vot_hard1.fit(x_train, x_test) y_pred = vot_hard1.predict(y_train) vot_hard1.score(y_train,y_test) modelpred4 = vot_hard1.predict(y_train) sub4 = pd.DataFrame(columns = ['PassengerId','Survived']) sub4['PassengerId'] = result['PassengerId'] sub4...
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DEVICE = "TPU" train = pd.read_csv('.. /input/siim-isic-melanoma-classification/train.csv') test = pd.read_csv('.. /input/siim-isic-melanoma-classification/test.csv') sub = pd.read_csv('.. /input/siim-isic-melanoma-classification/sample_submission.csv') FOLDS = 8 IMG_SIZES = [128, 192, 256, 256, 256, 384, 384, 512] ...
vot_hard1.fit(x_train, x_test) vot_hard1.score(y_train,y_test )
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if DEVICE == "TPU": print("connecting to TPU...") try: tpu = tf.distribute.cluster_resolver.TPUClusterResolver() print('Running on TPU ', tpu.master()) except ValueError: print("Could not connect to TPU") tpu = None if tpu: try: print("initializing TPU...") tf.config.experimental_connect_to_cluster(tpu) tf.tpu.exp...
output = pd.concat([output1,output2],axis = 1) output.sort_values(by=['Accuracy after HT'], inplace=True, ascending=False) output.head(10 )
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GCS_PATH = [None]*FOLDS; GCS_PATH2 = [None]*FOLDS for i,k in enumerate(IMG_SIZES): GCS_PATH[i] = KaggleDatasets().get_gcs_path('melanoma-%ix%i'%(k,k)) GCS_PATH2[i] = KaggleDatasets().get_gcs_path('isic2019-%ix%i'%(k,k)) files_train = np.sort(np.array(tf.io.gfile.glob(GCS_PATH[0] + '/train*.tfrec'))) files_test = np.so...
dataframe = pd.read_csv("/kaggle/input/titanic/train.csv") test = pd.read_csv('/kaggle/input/titanic/test.csv')
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ROT_ = 180.0 SHR_ = 2.0 HZOOM_ = 8.0 WZOOM_ = 8.0 HSHIFT_ = 8.0 WSHIFT_ = 8.0<normalization>
sns.countplot(dataframe['Survived'], hue = dataframe['Sex']) Dead, lives = dataframe.Survived.value_counts() male, female = dataframe.Sex.value_counts() print("Percentage of Male on ship:", round(male/(male+female)*100)) print("Percentage of Female on ship:", round(female/(male+female)*100))
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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') ...
dataframe.Pclass.unique() dataframe.Pclass.value_counts()
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def read_labeled_tfrecord(example): tfrec_format = { 'image' : tf.io.FixedLenFeature([], tf.string), 'image_name' : tf.io.FixedLenFeature([], tf.string), 'patient_id' : tf.io.FixedLenFeature([], tf.int64), 'sex' : tf.io.FixedLenFeature([], tf.int64), 'age_approx' : tf.io.FixedLenFeature([], tf.int64), 'anatom_site_gene...
sns.countplot(dataframe['Embarked'], hue = dataframe['Survived'] )
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def get_dataset(files, augment = False, shuffle = False, repeat = False, labeled=True, return_image_names=True, batch_size=16, dim=256): ds = tf.data.TFRecordDataset(files, num_parallel_reads=AUTO) ds = ds.cache() if repeat: ds = ds.repeat() if shuffle: ds = ds.shuffle(1024*8) opt = tf.data.Options() opt.experimental...
dataframe.isnull().values.any() dataframe.isnull().sum()
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EFNS = [efn.EfficientNetB0, efn.EfficientNetB1, efn.EfficientNetB2, efn.EfficientNetB3, efn.EfficientNetB4, efn.EfficientNetB5, efn.EfficientNetB6] def build_model(dim=128, ef=0): inp = tf.keras.layers.Input(shape=(dim,dim,3)) base = EFNS[ef](input_shape=(dim,dim,3),weights='imagenet',include_top=False) x = base(inp) ...
test.isnull().sum()
Titanic - Machine Learning from Disaster
9,918,480
def get_lr_callback(batch_size=8): lr_start = 0.000005 lr_max = 0.000020 * REPLICAS * batch_size/16 lr_min = 0.000001 lr_ramp_ep = 5 lr_sus_ep = 0 lr_decay = 0.8 def lrfn(epoch): if epoch < lr_ramp_ep: lr =(lr_max - lr_start)/ lr_ramp_ep * epoch + lr_start elif epoch < lr_ramp_ep + lr_sus_ep: lr = lr_max else: lr =(lr_...
dataframe.isnull().sum()
Titanic - Machine Learning from Disaster
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skf = KFold(n_splits=FOLDS,shuffle=True,random_state=42) oof_pred = []; oof_tar = []; oof_val = []; oof_names = [] preds = np.zeros(( count_data_items(files_test),1)) for fold,(idxT,idxV)in enumerate(skf.split(np.arange(15))): if DEVICE=='TPU': if tpu: tf.tpu.experimental.initialize_tpu_system(tpu) print(' print(' (...
test.isnull().sum()
Titanic - Machine Learning from Disaster
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oof = np.concatenate(oof_pred) names = np.concatenate(oof_names) true = np.concatenate(oof_tar) auc = roc_auc_score(true,oof) print('Overall OOF AUC with TTA = %.3f'%auc) df_oof = pd.DataFrame(dict(image_name = names, pred = oof, target=true)) df_oof.to_csv('oof.csv',index=False) df_oof.head()<create_dataframe>
test.isnull().sum()
Titanic - Machine Learning from Disaster
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ds = get_dataset(files_test, augment=False, repeat=False, dim=IMG_SIZES[fold], labeled=False, return_image_names=True) image_names = np.array([img_name.numpy().decode("utf-8") for img, img_name in iter(ds.unbatch())] )<save_to_csv>
train_set = dataframe.drop(['Name','Cabin', 'Ticket','PassengerId', ], axis = 1) test_set = test.drop(['Name','Cabin', 'Ticket', 'PassengerId', ], axis = 1)
Titanic - Machine Learning from Disaster
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submission = pd.DataFrame(dict(image_name=image_names, target=preds[:,0])) submission = submission.sort_values('image_name') submission.to_csv('submission.csv', index=False) submission.head()<install_modules>
test_set.isnull().sum()
Titanic - Machine Learning from Disaster
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!pip install -q efficientnet !pip install -q git+https://github.com/AmedeoBiolatti/dsqol<import_modules>
train_set['Embarked'].fillna(train_set['Embarked'].mode() [0], inplace = True)
Titanic - Machine Learning from Disaster
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import os, re, time, tqdm import numpy as np import pandas as pd import matplotlib.pyplot as plt from sklearn import metrics, model_selection import tensorflow as tf import tensorflow_addons as tfa from tensorflow import keras from tensorflow.keras import backend as K from efficientnet import tfkeras as efnet from kagg...
y = train_set.iloc[:, 0].values X = train_set.iloc[:, train_set.columns != 'Survived'].values print(X[0] )
Titanic - Machine Learning from Disaster
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from dsqol.tf import imgaug from dsqol.tf.data import balance from dsqol.tf.utils import average from dsqol.tf import losses<define_variables>
ct = ColumnTransformer(transformers=[('encoder', OneHotEncoder() , [6])], remainder='passthrough') X = np.array(ct.fit_transform(X)) print(X[2] )
Titanic - Machine Learning from Disaster
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SEED = 42 tf.random.set_seed(SEED) np.random.seed(SEED) TIME_BUDGET = 2.5 * 3600 FOLDS = 5 INCLUDE_2019 = 0 INCLUDE_2018 = 1 INCLUDE_MALIGNANT = 1 IMG_READ_SIZE = 384 IMG_SIZE = 384 BALANCE_POS_RATIO = False EFF_NET = 5 LOSS_TYPE = 'BCE' LOSS_PARAMS = dict(label_smoothing=0.05) BATCH_SIZE = 32 EPOCHS = 10 TBM = 6 TT...
ct = ColumnTransformer(transformers=[('encoder', OneHotEncoder() , [6])], remainder='passthrough') test_set = np.array(ct.fit_transform(test_set)) print(test_set[1])
Titanic - Machine Learning from Disaster
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DEVICE = "TPU" print("connecting to TPU...") try: tpu = tf.distribute.cluster_resolver.TPUClusterResolver() print('Running on TPU ', tpu.master()) except ValueError: print("Could not connect to TPU") tpu = None if tpu: try: print("initializing TPU...") tf.config.experimental_connect_to_cluster(tpu) tf.tpu.experime...
le = LabelEncoder() X[:, 4 ] = le.fit_transform(X[:,4]) print(X[1])
Titanic - Machine Learning from Disaster
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GCS_PATH1 = KaggleDatasets().get_gcs_path('melanoma-%ix%i' %(IMG_READ_SIZE, IMG_READ_SIZE)) GCS_PATH2 = KaggleDatasets().get_gcs_path('isic2019-%ix%i' %(IMG_READ_SIZE, IMG_READ_SIZE)) GCS_PATH3 = KaggleDatasets().get_gcs_path('malignant-v2-%ix%i' %(IMG_READ_SIZE, IMG_READ_SIZE))<load_from_csv>
le = LabelEncoder() test_set[:, 4] = le.fit_transform(test_set[:,4]) print(test_set[2] )
Titanic - Machine Learning from Disaster
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df_base_train = pd.read_csv(".. /input/siim-isic-melanoma-classification/train.csv") df_base_test = pd.read_csv(".. /input/siim-isic-melanoma-classification/test.csv" )<define_variables>
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size = 0.20 )
Titanic - Machine Learning from Disaster
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train_files = tf.io.gfile.glob(os.path.join(GCS_PATH1, "train*.tfrec")) if INCLUDE_2019: train_files += tf.io.gfile.glob([os.path.join(GCS_PATH2, "train%.2i*.tfrec" % i)for i in range(1, 30, 2)]) if INCLUDE_2018: train_files += tf.io.gfile.glob([os.path.join(GCS_PATH2, "train%.2i*.tfrec" % i)for i in range(0, 30, 2)])...
sc = StandardScaler() X_train = sc.fit_transform(X_train) X_test =sc.transform(X_test )
Titanic - Machine Learning from Disaster
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test_files = tf.io.gfile.glob(os.path.join(GCS_PATH1, "test*.tfrec")) print("%d test files found" % len(test_files))<prepare_x_and_y>
rfc=RandomForestClassifier() parameters= {'n_estimators':[ 100,200,300,400, 600], 'max_depth':[3,4,6,7], 'criterion':['entropy','gini'] } rfc=GridSearchCV(rfc, param_grid=parameters, cv = 5) rfc.fit(X_train,y_train) print("The best value of leanring rate is: ",rfc.best_params_, )
Titanic - Machine Learning from Disaster
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def read_labeled_tfrecord(example): tfrec_format = { 'image' : tf.io.FixedLenFeature([], tf.string), 'image_name' : tf.io.FixedLenFeature([], tf.string), 'target' : tf.io.FixedLenFeature([], tf.int64) } example = tf.io.parse_single_example(example, tfrec_format) return example['image'], example['target'] def read_unl...
rf_model = RandomForestClassifier(criterion= 'gini', n_estimators = 100 ,max_depth = 6, random_state = 0) rf_model.fit(X_train, y_train) y_pred = rf_model.predict(X_test) Random_forest_acc= accuracy_score(y_test, y_pred) print('acc = ', Random_forest_acc)
Titanic - Machine Learning from Disaster
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def dropout(image, DIM=256, PROBABILITY = 0.75, CT = 8, SZ = 0.2): P = tf.cast(tf.random.uniform([],0,1)<PROBABILITY, tf.int32) if(P==0)|(CT==0)|(SZ==0): return image for k in range(CT): x = tf.cast(tf.random.uniform([],0,DIM),tf.int32) y = tf.cast(tf.random.uniform([],0,DIM),tf.int32) WIDTH = tf.cast(SZ*DIM,tf.int3...
model = LogisticRegression() model.fit(X_train, y_train) y_pred = model.predict(X_test) LogisticReg_acc= accuracy_score(y_test, y_pred) print('acc = ', LogisticReg_acc )
Titanic - Machine Learning from Disaster
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AUG_BS = 64 def base_aug(img): img = tf.image.random_flip_left_right(img) img = tf.image.random_saturation(img, 0.7, 1.3) img = tf.image.random_contrast(img, 0.8, 1.2) img = tf.image.random_brightness(img, 0.1) return img dropout_aug = lambda img, o: dropout(img, DIM=IMG_READ_SIZE, PROBABILITY=0.75, CT=8, SZ=0.15) ...
model = SVC(kernel = 'rbf', random_state = 0) model.fit(X, y) y_pred = model.predict(X_test) SVC_acc = accuracy_score(y_test, y_pred) print('acc = ', SVC_acc )
Titanic - Machine Learning from Disaster
9,918,480
def get_dataset(files, augment=False, repeat=False, shuffle=False, labeled=True, batch_size=16, drop_remainder=False, dim=256, read_dim=None )-> tf.data.Dataset: if read_dim is None: read_dim = dim ds = tf.data.TFRecordDataset(files, num_parallel_reads=AUTO) ds = ds.cache() if repeat: ds = ds.repeat() if shuffle: ds ...
model = GaussianNB() model.fit(X, y) y_pred = model.predict(X_test) Gaussian_acc = accuracy_score(y_test, y_pred) print('acc = ', Gaussian_acc )
Titanic - Machine Learning from Disaster
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def show_dataset(thumb_size, cols, rows, ds): mosaic = PIL.Image.new(mode='RGB', size=(thumb_size*cols +(cols-1), thumb_size*rows +(rows-1))) for idx, data in enumerate(iter(ds)) : img, target_or_imgid = data ix = idx % cols iy = idx // cols img = np.clip(img.numpy() * 255, 0, 255 ).astype(np.uint8) img = PIL.Image.f...
model = DecisionTreeClassifier(criterion = 'entropy', random_state = 0) model.fit(X_train, y_train) y_pred = model.predict(X_test) DT_acc = accuracy_score(y_test, y_pred) print('acc = ', DT_acc)
Titanic - Machine Learning from Disaster
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show_dataset(128, 8, 2, get_balanced_dataset(train_files, augment=[dropout_aug], cw_augment=[cw_mixup_aug] ).take(10 ).unbatch() )<choose_model_class>
gbc=GradientBoostingClassifier() parameters= {'n_estimators':[ 50,100,200,300, ], 'max_depth':[3,4,6,7] } gbreg=GridSearchCV(gbc, param_grid=parameters, cv = 5) gbreg.fit(X_train,y_train) print("The best value of leanring rate is: ",gbreg.best_params_, )
Titanic - Machine Learning from Disaster
9,918,480
def build_model(dim=128, ef=0): inp = keras.layers.Input(shape=(dim,dim,3)) base = getattr(efnet, 'EfficientNetB%d' % ef )(input_shape=(dim, dim, 3), weights='imagenet', include_top=False) x = base(inp) x = keras.layers.GlobalAveragePooling2D()(x) x = keras.layers.Dense(1 )(x) x = keras.layers.Activation('sigmoid',...
model_gb = GradientBoostingClassifier(n_estimators = 100, max_depth =4, random_state = 42) model_gb.fit(X_train, y_train) y_pred = model_gb.predict(X_test) GB_acc = accuracy_score(y_test, y_pred) print('acc = ', GB_acc )
Titanic - Machine Learning from Disaster
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mult = 1 lr_start = 5e-6 lr_max = 1.25e-6 * GLOBAL_BATCH_SIZE lr_min = 1e-6 lr_ramp_ep = 5 lr_sus_ep = 0 lr_decay = 0.8 def lrfn(epoch): if epoch < lr_ramp_ep: lr =(lr_max - lr_start)/ lr_ramp_ep * epoch + lr_start elif epoch < lr_ramp_ep + lr_sus_ep: lr = lr_max else: lr =(lr_max - lr_min)* lr_decay**(epoch - lr_ramp_...
classifier = XGBClassifier() classifier.fit(X_train, y_train) y_pred = classifier.predict(X_test) xgb_acc = accuracy_score(y_pred, y_test) print('acc=',xgb_acc )
Titanic - Machine Learning from Disaster
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CKPT_FOLDER = ".. /working/ckpt" if not os.path.exists(CKPT_FOLDER): os.mkdir(CKPT_FOLDER) folds = list(model_selection.KFold(n_splits=FOLDS, shuffle=True, random_state=SEED ).split(np.arange(15))) testiness = pd.read_csv(".. /input/spicv-spicy-vi-make-your-cv-more-testy/testiness.csv") TOTAL_POS = 581 + 2858 * INCL...
print('RF_acc=', Random_forest_acc) print('Logistic_acc=', LogisticReg_acc) print('SVC_acc=', SVC_acc) print('Gaussian_acc=', Gaussian_acc) print('DecisionTree_acc=', DT_acc) print('GradBoost_acc=', GB_acc) print('XGBoost_acc=', xgb_acc)
Titanic - Machine Learning from Disaster
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VERBOSE = 1 PLOT = 1 histories = [] df_oof = pd.DataFrame() ; df_res = pd.DataFrame() t_start = time.time() for fold,(idTrain, idValid)in enumerate(folds): print(" print(( " print(" if DEVICE == 'TPU': if tpu: tf.tpu.experimental.initialize_tpu_system(tpu) fold_valid_files = [f for f in train_files if any([int(re.matc...
rf_model = RandomForestClassifier(criterion= 'gini', n_estimators = 100 ,max_depth = 6, random_state = 0) rf_model.fit(X, y) final_pred = rf_model.predict(test_set) final_pred
Titanic - Machine Learning from Disaster
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xxx = df_oof.groupby('image_name' ).mean().reset_index().merge(df_base_train, on='image_name') print("OOF AUC(TTA %d)= %.4f" %(TTA, metrics.roc_auc_score(xxx.target, xxx.pred)) )<save_to_csv>
survivors = pd.DataFrame(final_pred, columns = ['Survived']) len(survivors) survivors.insert(0, 'PassengerId', test['PassengerId'], True) survivors
Titanic - Machine Learning from Disaster
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df_res.to_csv('.. /working/test_res_all.csv', index=False) df_oof.to_csv('.. /working/oof_res_all.csv', index=False )<save_to_csv>
survivors.to_csv('Submission.csv', index = False )
Titanic - Machine Learning from Disaster
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df_res[['image_name', 'pred']].groupby('image_name' ).mean().reset_index().rename({'pred': 'target'}, axis=1 ).to_csv("submission.csv", index=False )<load_from_csv>
dataframe = pd.read_csv("/kaggle/input/titanic/train.csv") test = pd.read_csv('/kaggle/input/titanic/test.csv')
Titanic - Machine Learning from Disaster
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warnings.filterwarnings("ignore") train = pd.read_csv('.. /input/train.csv', parse_dates=['Dates']) test = pd.read_csv('.. /input/test.csv', parse_dates=['Dates'], index_col='Id') tokenizer = Tokenizer() tokenizer.fit_on_texts(list(train["Address"])+ list(test["Address"])) haha = tokenizer.texts_to_sequences(train["...
sns.countplot(dataframe['Survived'], hue = dataframe['Sex']) Dead, lives = dataframe.Survived.value_counts() male, female = dataframe.Sex.value_counts() print("Percentage of Male on ship:", round(male/(male+female)*100)) print("Percentage of Female on ship:", round(female/(male+female)*100))
Titanic - Machine Learning from Disaster
9,918,480
For the Traveling Santa 2018 competition.All computation is done within the Kernel, including building the list of primes and creating the TSPLIB file. The downloaded C codes(in gzipped tar files)are left in the Kernel. Note: The prime_thread code, built on top of the linkern code from Concorde, uses as a random seed...
dataframe.Pclass.unique() dataframe.Pclass.value_counts()
Titanic - Machine Learning from Disaster
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cities = pd.read_csv('.. /input/cities.csv', index_col=['CityId'], nrows=None) cities_1000 = cities * 1000<save_to_csv>
sns.countplot(dataframe['Embarked'], hue = dataframe['Survived'] )
Titanic - Machine Learning from Disaster
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def write_tsp(nodes, filename, name='Santa Prime Paths'): with open(filename, 'w')as f: f.write('NAME : %s ' % name) f.write('COMMENT : %s ' % name) f.write('TYPE : TSP ') f.write('DIMENSION : %d ' % len(nodes)) f.write('EDGE_WEIGHT_TYPE : EUC_2D ') f.write('NODE_COORD_SECTION ') for row in nodes.itertuples() : f....
dataframe.isnull().values.any() dataframe.isnull().sum()
Titanic - Machine Learning from Disaster
9,918,480
%%bash rm -r LKH-2.0.9 rm LKH-2.0.9.t* wget http://akira.ruc.dk/~keld/research/LKH/LKH-2.0.9.tgz<set_options>
test.isnull().sum()
Titanic - Machine Learning from Disaster
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%%bash tar xzvf LKH-2.0.9.tgz cd LKH-2.0.9 make mv LKH.. cd.. rm -r LKH-2.0.9<set_options>
dataframe.isnull().sum()
Titanic - Machine Learning from Disaster
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%%bash ./LKH par0.par<set_options>
test.isnull().sum()
Titanic - Machine Learning from Disaster
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%%bash ./LKH par7.par<save_to_csv>
test.isnull().sum()
Titanic - Machine Learning from Disaster
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def write_xy(nodes, filename): with open(filename, 'w')as f: f.write('%d ' % len(nodes)) for row in nodes.itertuples() : f.write('%.12f %.12f ' %(row.X, row.Y)) f.write('EOF ') write_xy(cities, 'kaggle.xy' )<set_options>
train_set = dataframe.drop(['Name','Cabin', 'Ticket','PassengerId', ], axis = 1) test_set = test.drop(['Name','Cabin', 'Ticket', 'PassengerId', ], axis = 1)
Titanic - Machine Learning from Disaster
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%%bash wget http://www.math.uwaterloo.ca/tsp/pm/gen_primes.c gcc -o gen_primes gen_primes.c -lm ./gen_primes head primes.txt rm gen_primes*<set_options>
test_set.isnull().sum()
Titanic - Machine Learning from Disaster
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%%bash wget http://www.math.uwaterloo.ca/tsp/pm/PM_1.tgz tar xzvf PM_1.tgz cd PM_1 make prime_thread mv prime_thread.. cd.. rm -r PM_1<install_modules>
train_set['Embarked'].fillna(train_set['Embarked'].mode() [0], inplace = True)
Titanic - Machine Learning from Disaster
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%%bash rm -r PM-LKH* wget http://www.math.uwaterloo.ca/tsp/pm/PM-LKH-3b.tgz tar xzvf PM-LKH-3b.tgz mv PM-LKH-3b PM-LKH cd PM-LKH make rm -r PMSRC_DIV<set_options>
y = train_set.iloc[:, 0].values X = train_set.iloc[:, train_set.columns != 'Survived'].values print(X[0] )
Titanic - Machine Learning from Disaster
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%%bash cp kaggle.xy PM-LKH/ cp santa197769.tsp PM-LKH/ cp primes.txt PM-LKH/primes_list<load_from_csv>
ct = ColumnTransformer(transformers=[('encoder', OneHotEncoder() , [6])], remainder='passthrough') X = np.array(ct.fit_transform(X)) print(X[2] )
Titanic - Machine Learning from Disaster
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%%bash cd PM-LKH mv submission.csv.. /submission.csv rm -r DIV rm -r DIV_TOURS<set_options>
ct = ColumnTransformer(transformers=[('encoder', OneHotEncoder() , [6])], remainder='passthrough') test_set = np.array(ct.fit_transform(test_set)) print(test_set[1])
Titanic - Machine Learning from Disaster
9,918,480
%%bash cd PM-LKH ./run_Segment_Optimization post.tour 5000 post2.tour<load_from_csv>
le = LabelEncoder() X[:, 4 ] = le.fit_transform(X[:,4]) print(X[1])
Titanic - Machine Learning from Disaster
9,918,480
%%bash cd PM-LKH mv submission.csv.. /submission.csv rm -r DIV rm -r DIV_TOURS<set_options>
le = LabelEncoder() test_set[:, 4] = le.fit_transform(test_set[:,4]) print(test_set[2] )
Titanic - Machine Learning from Disaster
9,918,480
%%bash cd PM-LKH ./run_Segment_Optimization post2.tour 7500 post3.tour<load_from_csv>
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size = 0.20 )
Titanic - Machine Learning from Disaster
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%%bash cd PM-LKH mv submission.csv.. /submission.csv rm -r DIV rm -r DIV_TOURS<set_options>
sc = StandardScaler() X_train = sc.fit_transform(X_train) X_test =sc.transform(X_test )
Titanic - Machine Learning from Disaster
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%%bash cd PM-LKH ./run_Segment_Optimization post3.tour 6250 post4.tour<load_from_csv>
rfc=RandomForestClassifier() parameters= {'n_estimators':[ 100,200,300,400, 600], 'max_depth':[3,4,6,7], 'criterion':['entropy','gini'] } rfc=GridSearchCV(rfc, param_grid=parameters, cv = 5) rfc.fit(X_train,y_train) print("The best value of leanring rate is: ",rfc.best_params_, )
Titanic - Machine Learning from Disaster