Kaggle competition: Costa Rican Household Poverty Level Prediction
<SOS> metric: MacroFScore Kaggle data source: costa-rican-household-poverty-level-prediction<concatenate>
%matplotlib inline
warnings.filterwarnings("ignore" )
train_all = pd.concat([x_train,y_train],axis=1)
 train_all.head()<train_model>
def encode_data(df):
df['idhogar'] = LabelEncoder().fit_transform(df['idhogar'])
 def feature_importance(forest, X_train):
ranked_list = []
importances = forest.feature_importances_
indices = np.argsort(importances)[::-1]
print("Feature ranking:")
 for f in range(X_train.shape[1]):
print("%d.feature %d(%f)" %(f + 1, indices[f], importances[indices[f]])+ " - " + X_train.columns[indices[f]])
 ranked_list.append(X_train.columns[indices[f]])
 return ranked_list
clf_log_reg = LogisticRegression(penalty='l2',random_state=1,solver='lbfgs',tol=0.001 ).fit(x_train,y_train )<predict_on_test>
def do_features(df):
feats_div = [('children_fraction', 'r4t1', 'r4t3'), 
('working_man_fraction', 'r4h2', 'r4t3'), 
('all_man_fraction', 'r4h3', 'r4t3'), 
('human_density', 'tamviv', 'rooms'), 
('human_bed_density', 'tamviv', 'bedrooms'), 
('rent_per_person', 'v2a1', 'r4t3'), 
('rent_per_room', 'v2a1', 'rooms'), 
('mobile_density', 'qmobilephone', 'r4t3'), 
('tablet_density', 'v18q1', 'r4t3'), 
('mobile_adult_density', 'qmobilephone', 'r4t2'), 
('tablet_adult_density', 'v18q1', 'r4t2'),
]
feats_sub = [('people_not_living', 'tamhog', 'tamviv'), 
('people_weird_stat', 'tamhog', 'r4t3')]
for f_new, f1, f2 in feats_div:
df['fe_' + f_new] =(df[f1] / df[f2] ).astype(np.float32)
 for f_new, f1, f2 in feats_sub:
df['fe_' + f_new] =(df[f1] - df[f2] ).astype(np.float32)
 aggs_num = {'age': ['min', 'max', 'mean'],
'escolari': ['min', 'max', 'mean']
}
aggs_cat = {'dis': ['mean']}
for s_ in ['estadocivil', 'parentesco', 'instlevel']:
for f_ in [f_ for f_ in df.columns if f_.startswith(s_)]:
aggs_cat[f_] = ['mean', 'count']
for name_, df_ in [('18', df.query('age >= 18')) ]:
df_agg = df_.groupby('idhogar' ).agg({**aggs_num, **aggs_cat} ).astype(np.float32)
 df_agg.columns = pd.Index(['agg' + name_ + '_' + e[0] + "_" + e[1].upper() for e in df_agg.columns.tolist() ])
 df = df.join(df_agg, how='left', on='idhogar')
 del df_agg
df.drop(['Id'], axis=1, inplace=True)
 return df
clf_log_reg.predict(x_val )<compute_test_metric>
def convert_OHE2LE(df):
tmp_df = df.copy(deep=True)
 for s_ in ['pared', 'piso', 'techo', 'abastagua', 'sanitario', 'energcocinar', 'elimbasu',
'epared', 'etecho', 'eviv', 'estadocivil', 'parentesco',
'instlevel', 'lugar', 'tipovivi',
'manual_elec']:
if 'manual_' not in s_:
cols_s_ = [f_ for f_ in df.columns if f_.startswith(s_)]
elif 'elec' in s_:
cols_s_ = ['public', 'planpri', 'noelec', 'coopele']
sum_ohe = tmp_df[cols_s_].sum(axis=1 ).unique()
if 0 in sum_ohe:
print('The OHE in {} is incomplete.A new column will be added before label encoding' 
.format(s_))
col_dummy = s_+'_dummy'
tmp_df[col_dummy] =(tmp_df[cols_s_].sum(axis=1)== 0 ).astype(np.int8)
 cols_s_.append(col_dummy)
 sum_ohe = tmp_df[cols_s_].sum(axis=1 ).unique()
if 0 in sum_ohe:
print("The category completion did not work")
 tmp_cat = tmp_df[cols_s_].idxmax(axis=1)
 tmp_df[s_ + '_LE'] = LabelEncoder().fit_transform(tmp_cat ).astype(np.int16)
 if 'parentesco1' in cols_s_:
cols_s_.remove('parentesco1')
 tmp_df.drop(cols_s_, axis=1, inplace=True)
 return tmp_df
print(clf_log_reg.decision_function(x_val))<predict_on_test>
train = pd.read_csv('.. /input/train.csv')
 test = pd.read_csv('.. /input/test.csv')
 test_ids = test.Id
clf_log_reg.predict_proba(x_val )<find_best_params>
def process_df(df_):
encode_data(df_)
 return do_features(df_)
 train = process_df(train)
 test = process_df(test )
clf_log_reg.get_params()<compute_test_metric>
train['dependency'] = np.sqrt(train['SQBdependency'])
 test['dependency'] = np.sqrt(test['SQBdependency'])
 train.loc[train['edjefa'] == "no", "edjefa"] = 0
train.loc[train['edjefe'] == "no", "edjefe"] = 0
test.loc[test['edjefa'] == "no", "edjefa"] = 0
test.loc[test['edjefe'] == "no", "edjefe"] = 0
train.loc[(train['edjefa'] == "yes")&(train['parentesco1'] == 1), "edjefa"] = train.loc[(train['edjefa'] == "yes")&(train['parentesco1'] == 1), "escolari"]
train.loc[(train['edjefe'] == "yes")&(train['parentesco1'] == 1), "edjefe"] = train.loc[(train['edjefe'] == "yes")&(train['parentesco1'] == 1), "escolari"]
test.loc[(test['edjefa'] == "yes")&(test['parentesco1'] == 1), "edjefa"] = test.loc[(test['edjefa'] == "yes")&(test['parentesco1'] == 1), "escolari"]
test.loc[(test['edjefe'] == "yes")&(test['parentesco1'] == 1), "edjefe"] = test.loc[(test['edjefe'] == "yes")&(test['parentesco1'] == 1), "escolari"]
train.loc[train['edjefa'] == "yes", "edjefa"] = 4
train.loc[train['edjefe'] == "yes", "edjefe"] = 4
test.loc[test['edjefa'] == "yes", "edjefa"] = 4
test.loc[test['edjefe'] == "yes", "edjefe"] = 4
train['edjefe'] = train['edjefe'].astype("int")
 train['edjefa'] = train['edjefa'].astype("int")
 test['edjefe'] = test['edjefe'].astype("int")
 test['edjefa'] = test['edjefa'].astype("int")
 train['edjef'] = np.max(train[['edjefa','edjefe']], axis=1)
 test['edjef'] = np.max(test[['edjefa','edjefe']], axis=1)
 train['v2a1']=train['v2a1'].fillna(0)
 test['v2a1']=test['v2a1'].fillna(0)
 test['v18q1']=test['v18q1'].fillna(0)
 train['v18q1']=train['v18q1'].fillna(0)
 train['rez_esc']=train['rez_esc'].fillna(0)
 test['rez_esc']=test['rez_esc'].fillna(0)
 train.loc[train.meaneduc.isnull() , "meaneduc"] = 0
train.loc[train.SQBmeaned.isnull() , "SQBmeaned"] = 0
test.loc[test.meaneduc.isnull() , "meaneduc"] = 0
test.loc[test.SQBmeaned.isnull() , "SQBmeaned"] = 0
train.loc[(train.v14a == 1)&(train.sanitario1 == 1)&(train.abastaguano == 0), "v14a"] = 0
train.loc[(train.v14a == 1)&(train.sanitario1 == 1)&(train.abastaguano == 0), "sanitario1"] = 0
test.loc[(test.v14a == 1)&(test.sanitario1 == 1)&(test.abastaguano == 0), "v14a"] = 0
test.loc[(test.v14a == 1)&(test.sanitario1 == 1)&(test.abastaguano == 0), "sanitario1"] = 0
clf_log_reg.score(x_val,y_val )<categorify>
def train_test_apply_func(train_, test_, func_):
test_['Target'] = 0
xx = pd.concat([train_, test_])
 xx_func = func_(xx)
 train_ = xx_func.iloc[:train_.shape[0], :]
test_ = xx_func.iloc[train_.shape[0]:, :].drop('Target', axis=1)
 del xx, xx_func
return train_, test_
test_df = imputer_null(test_df)
 test_df = one_hot(test_df)
 test_df = add_family_feature(test_df)
 test_df = normalize_feature(test_df)
 test_df.head()<predict_on_test>
train, test = train_test_apply_func(train, test, convert_OHE2LE )
test_df.drop(columns=['Ticket'],axis=1,inplace=True)
 test_pred = clf_log_reg.predict(test_df)
 test_pred_df = pd.DataFrame(test_pred,columns=['Survived'])
 test_pred_df
y_test = pd.concat([test_data[['PassengerId']],test_pred_df],axis=1)
 y_test.head()<predict_on_test>
cols_2_ohe = ['eviv_LE', 'etecho_LE', 'epared_LE', 'elimbasu_LE',
'energcocinar_LE', 'sanitario_LE', 'manual_elec_LE',
'pared_LE']
cols_nums = ['age', 'meaneduc', 'dependency',
'hogar_nin', 'hogar_adul', 'hogar_mayor', 'hogar_total',
'bedrooms', 'overcrowding']
def convert_geo2aggs(df_):
tmp_df = pd.concat([df_[(['lugar_LE', 'idhogar']+cols_nums)],
pd.get_dummies(df_[cols_2_ohe],
columns=cols_2_ohe)],axis=1)
 geo_agg = tmp_df.groupby(['lugar_LE','idhogar'] ).mean().groupby('lugar_LE' ).mean().astype(np.float32)
 geo_agg.columns = pd.Index(['geo_' + e for e in geo_agg.columns.tolist() ])
 del tmp_df
return df_.join(geo_agg, how='left', on='lugar_LE')
 train, test = train_test_apply_func(train, test, convert_geo2aggs )
val_prob = np.array(clf_log_reg.predict_proba(x_val))
print(val_prob[:,1] )<compute_test_metric>
train['num_over_18'] = 0
train['num_over_18'] = train[train.age >= 18].groupby('idhogar' ).transform("count")
 train['num_over_18'] = train.groupby("idhogar")["num_over_18"].transform("max")
 train['num_over_18'] = train['num_over_18'].fillna(0)
 test['num_over_18'] = 0
test['num_over_18'] = test[test.age >= 18].groupby('idhogar' ).transform("count")
 test['num_over_18'] = test.groupby("idhogar")["num_over_18"].transform("max")
 test['num_over_18'] = test['num_over_18'].fillna(0)
 def extract_features(df):
df['bedrooms_to_rooms'] = df['bedrooms']/df['rooms']
df['rent_to_rooms'] = df['v2a1']/df['rooms']
df['tamhog_to_rooms'] = df['tamhog']/df['rooms']
df['r4t3_to_tamhog'] = df['r4t3']/df['tamhog']
df['r4t3_to_rooms'] = df['r4t3']/df['rooms']
df['v2a1_to_r4t3'] = df['v2a1']/df['r4t3']
df['v2a1_to_r4t3'] = df['v2a1']/(df['r4t3'] - df['r4t1'])
 df['hhsize_to_rooms'] = df['hhsize']/df['rooms']
df['rent_to_hhsize'] = df['v2a1']/df['hhsize']
df['rent_to_over_18'] = df['v2a1']/df['num_over_18']
df.loc[df.num_over_18 == 0, "rent_to_over_18"] = df[df.num_over_18 == 0].v2a1
df['dependency_yes'] = df['dependency'].apply(lambda x: 1 if x == 'yes' else 0)
 df['dependency_no'] = df['dependency'].apply(lambda x: 1 if x == 'no' else 0)
 extract_features(train)
 extract_features(test )
val_score = clf_log_reg.score(x_val,y_val)
 print("Score of Validation set is :" "{:.2f}".format(val_score*100))<compute_test_metric>
needless_cols = ['r4t3', 'tamhog', 'tamviv', 'hhsize', 'v18q', 'v14a', 'agesq',
'mobilephone', 'female', ]
instlevel_cols = [s for s in train.columns.tolist() if 'instlevel' in s]
needless_cols.extend(instlevel_cols)
 train = train.drop(needless_cols, axis=1)
 test = test.drop(needless_cols, axis=1 )
roc_auc = "{:.2f}".format(roc_auc_score(y_val,val_prob[:,1])*100)
 print(roc_auc )<import_modules>
def split_data(train, y, households, test_percentage=0.20, seed=None):
np.random.seed(seed=seed)
 train2 = train.copy()
cv_hhs = np.random.choice(households, size=int(len(households)* test_percentage), replace=False)
 cv_idx = np.isin(households, cv_hhs)
 X_test = train2[cv_idx]
y_test = y[cv_idx]
X_train = train2[~cv_idx]
y_train = y[~cv_idx]
return X_train, y_train, X_test, y_test
from sklearn.metrics import roc_curve 
<save_to_csv>
X = train.query('parentesco1==1')
 y = X['Target'] - 1
X = X.drop(['Target'], axis=1)
 np.random.seed(seed=1977)
 train2 = X.copy()
train_hhs = train2.idhogar
households = train2.idhogar.unique()
cv_hhs = np.random.choice(households, size=int(len(households)* 0.1), replace=False)
 cv_idx = np.isin(train2.idhogar, cv_hhs)
 X_test = train2[cv_idx]
y_test = y[cv_idx]
X_train = train2[~cv_idx]
y_train = y[~cv_idx]
X_train = train2
y_train = y
train_households = X_train.idhogar
y_test.to_csv("logistic_submission.csv",index=False )<train_model>
extra_drop_features = ['geo_manual_elec_LE_2',
'agg18_estadocivil5_COUNT',
'agg18_estadocivil7_COUNT',
'geo_pared_LE_5',
'agg18_estadocivil6_COUNT',
'geo_pared_LE_4',
'agg18_parentesco10_COUNT',
'num_over_18',
'agg18_estadocivil1_MEAN',
'agg18_estadocivil4_COUNT',
'r4t3_to_tamhog',
'agg18_estadocivil3_COUNT',
'geo_pared_LE_3',
'geo_pared_LE_6',
'geo_pared_LE_0',
'geo_pared_LE_7',
'agg18_parentesco7_COUNT',
'agg18_parentesco10_MEAN',
'agg18_parentesco8_MEAN',
'parentesco1',
'rez_esc',
'dependency_yes',
'hacdor',
'hacapo',
'fe_people_weird_stat',
'geo_hogar_mayor',
'geo_eviv_LE_0',
'geo_epared_LE_0',
'geo_epared_LE_2',
'geo_elimbasu_LE_4',
'geo_energcocinar_LE_0',
'agg18_parentesco9_COUNT',
'agg18_parentesco8_COUNT',
'agg18_parentesco11_COUNT',
'parentesco_LE',
'agg18_parentesco6_MEAN',
'agg18_parentesco6_COUNT',
'agg18_parentesco5_COUNT',
'agg18_parentesco4_MEAN',
'agg18_parentesco4_COUNT',
'geo_energcocinar_LE_1',
'agg18_parentesco3_COUNT',
'geo_energcocinar_LE_2',
'agg18_parentesco2_COUNT',
'agg18_parentesco1_COUNT',
'agg18_parentesco12_MEAN',
'agg18_parentesco12_COUNT',
'dependency_no'] + ['geo_hogar_nin', 'geo_manual_elec_LE_3']
clf_svc = svm.NuSVC().fit(x_train,y_train )<predict_on_test>
lgb_drop_cols = extra_drop_features + ["idhogar"]
try:
X_train.drop(lgb_drop_cols, axis=1, inplace=True)
 X_test.drop(lgb_drop_cols, axis=1, inplace=True)
 except:
print("Error dropping columns" )
clf_svc.predict(x_val )<compute_test_metric>
opt_parameters = {'colsample_bytree': 0.88, 'min_child_samples': 90, 'num_leaves': 16, 'subsample': 0.94}
def evaluate_macroF1_lgb(truth, predictions):
pred_labels = predictions.reshape(len(np.unique(truth)) ,-1 ).argmax(axis=0)
 f1 = f1_score(truth, pred_labels, average='macro')
 return('macroF1', f1, True)
 fit_params={"early_stopping_rounds":300,
"eval_metric" : evaluate_macroF1_lgb,
"eval_set" : [(X_train,y_train),(X_test,y_test)],
'eval_names': ['train', 'valid'],
'verbose': False,
'categorical_feature': 'auto'}
def learning_rate_power_0997(current_iter):
base_learning_rate = 0.1
min_learning_rate = 0.02
lr = base_learning_rate * np.power (.995, current_iter)
 return max(lr, min_learning_rate)
 fit_params['verbose'] = 200
fit_params['callbacks'] = [lgb.reset_parameter(learning_rate=learning_rate_power_0997)]
clf_svc.score(x_val,y_val )<predict_on_test>
def _parallel_fit_estimator(estimator1, X, y, sample_weight=None, threshold=True, **fit_params):
estimator = clone(estimator1)
 X_train, y_train, X_test, y_test = split_data(X, y, households=train_households, seed=None)
 fit_params["eval_set"] = [(X_train,y_train),(X_test,y_test)]
if sample_weight is not None:
if isinstance(estimator1, ExtraTreesClassifier)or isinstance(estimator1, RandomForestClassifier):
estimator.fit(X_train, y_train)
 else:
estimator.fit(X_train, y_train, sample_weight=sample_weight, **fit_params)
 else:
if isinstance(estimator1, ExtraTreesClassifier)or isinstance(estimator1, RandomForestClassifier):
estimator.fit(X_train, y_train)
 else:
estimator.fit(X_train, y_train, **fit_params)
 if not isinstance(estimator1, ExtraTreesClassifier)and not isinstance(estimator1, RandomForestClassifier):
best_cv_round = np.argmax(estimator.evals_result_['valid']['macroF1'])
 best_cv = np.max(estimator.evals_result_['valid']['macroF1'])
 best_train = estimator.evals_result_['train']['macroF1'][best_cv_round]
else:
best_train = f1_score(y_train, estimator.predict(X_train), average="macro")
 best_cv = f1_score(y_test, estimator.predict(X_test), average="macro")
 print("Train F1:", best_train)
 print("Test F1:", best_cv)
 if threshold:
if(( best_cv > 0.39)and(best_train > 0.75)) or(( best_cv > 0.44)and(best_train > 0.65)) :
return estimator
else:
print("Unacceptable!!! Trying again...")
 return _parallel_fit_estimator(estimator1, X, y, sample_weight=sample_weight, **fit_params)
 else:
return estimator
class VotingClassifierLGBM(VotingClassifier):

 def fit(self, X, y, sample_weight=None, threshold=True, **fit_params):
if isinstance(y, np.ndarray)and len(y.shape)> 1 and y.shape[1] > 1:
raise NotImplementedError('Multilabel and multi-output'
' classification is not supported.')
 if self.voting not in('soft', 'hard'):
raise ValueError("Voting must be 'soft' or 'hard'; got(voting=%r)"
% self.voting)
 if self.estimators is None or len(self.estimators)== 0:
raise AttributeError('Invalid `estimators` attribute, `estimators`'
' should be a list of(string, estimator)'
' tuples')
 if(self.weights is not None and
len(self.weights)!= len(self.estimators)) :
raise ValueError('Number of classifiers and weights must be equal'
'; got %d weights, %d estimators'
%(len(self.weights), len(self.estimators)))
 if sample_weight is not None:
for name, step in self.estimators:
if not has_fit_parameter(step, 'sample_weight'):
raise ValueError('Underlying estimator '%s' does not'
' support sample weights.' % name)
 names, clfs = zip(*self.estimators)
 self._validate_names(names)
 n_isnone = np.sum([clf is None for _, clf in self.estimators])
 if n_isnone == len(self.estimators):
raise ValueError('All estimators are None.At least one is '
'required to be a classifier!')
 self.le_ = LabelEncoder().fit(y)
 self.classes_ = self.le_.classes_
self.estimators_ = []
transformed_y = self.le_.transform(y)
 self.estimators_ = Parallel(n_jobs=self.n_jobs )(
 delayed(_parallel_fit_estimator )(clone(clf), X, transformed_y,
sample_weight=sample_weight, threshold=threshold, **fit_params)
 for clf in clfs if clf is not None)
 return self
test_pred = clf_svc.predict(test_df)
 test_pred_df = pd.DataFrame(test_pred,columns=['Survived'])
 test_pred_df
y_test = pd.concat([test_data[['PassengerId']],test_pred_df],axis=1)
 y_test.head()<save_to_csv>
clfs = []
for i in range(24):
clf = lgb.LGBMClassifier(max_depth=-1, learning_rate=0.1, objective='multiclass',
random_state=314+i, silent=True, metric='None',
n_jobs=4, n_estimators=5000, class_weight='balanced')
 clf.set_params(**opt_parameters)
 clfs.append(( 'lgbm{}'.format(i), clf))
vc = VotingClassifierLGBM(clfs, voting='soft')
 del clfs
_ = vc.fit(X_train, y_train, **fit_params)
 clf_final = vc.estimators_[0]
y_test.to_csv("svc.submission.csv",index=False )<predict_on_test>
global_score = f1_score(y_test, clf_final.predict(X_test), average='macro')
 vc.voting = 'soft'
global_score_soft = f1_score(y_test, vc.predict(X_test), average='macro')
 vc.voting = 'hard'
global_score_hard = f1_score(y_test, vc.predict(X_test), average='macro')
 print('Validation score of a single LGBM Classifier: {:.4f}'.format(global_score))
print('Validation score of a VotingClassifier on 3 LGBMs with soft voting strategy: {:.4f}'.format(global_score_soft))
print('Validation score of a VotingClassifier on 3 LGBMs with hard voting strategy: {:.4f}'.format(global_score_hard))
clf_nb = GaussianNB().fit(x_train,y_train)
 clf_nb.predict(x_val )<compute_test_metric>
global_score = f1_score(y_test, clf_final.predict(X_test), average='macro')
 vc.voting = 'soft'
global_score_soft = f1_score(y_test, vc.predict(X_test), average='macro')
 vc.voting = 'hard'
global_score_hard = f1_score(y_test, vc.predict(X_test), average='macro')
 print('Validation score of a single LGBM Classifier: {:.4f}'.format(global_score))
print('Validation score of a VotingClassifier on 3 LGBMs with soft voting strategy: {:.4f}'.format(global_score_soft))
print('Validation score of a VotingClassifier on 3 LGBMs with hard voting strategy: {:.4f}'.format(global_score_hard))
clf_nb.score(x_val,y_val )<predict_on_test>
ranked_features = feature_importance(clf_final, X_train )
y_test = clf_nb.predict(test_df)
 y_test<create_dataframe>
y_subm = pd.DataFrame()
y_subm['Id'] = test_ids
y_pred_df = pd.DataFrame(y_test,columns=['Survived'])
 test_data = pd.concat([test_data[['PassengerId']],y_pred_df],axis=1)
 test_data.head()<save_to_csv>
y_subm['Target'] = clf_final.predict(test[X_train.columns])+ 1
vc.voting = 'soft'
y_subm_soft = y_subm.copy(deep=True)
 y_subm_soft['Target'] = vc.predict(test[X_train.columns])+ 1
vc.voting = 'hard'
y_subm_hard = y_subm.copy(deep=True)
 y_subm_hard['Target'] = vc.predict(test[X_train.columns])+ 1
<train_model><EOS> 
now = datetime.now()
sub_file = 'submission_LGB_{:.4f}_{}.csv'.format(global_score, str(now.strftime('%Y-%m-%d-%H-%M')))
 sub_file_soft = 'submission_soft_LGB_{:.4f}_{}.csv'.format(global_score_soft, str(now.strftime('%Y-%m-%d-%H-%M')))
 sub_file_hard = 'submission_hard_LGB_{:.4f}_{}.csv'.format(global_score_hard, str(now.strftime('%Y-%m-%d-%H-%M')))
 sub_file_0forNonHeads = 'submission_0forNonHead_LGB_{:.4f}_{}.csv'.format(global_score, str(now.strftime('%Y-%m-%d-%H-%M')))
 y_subm.to_csv(sub_file, index=False)
 y_subm_soft.to_csv(sub_file_soft, index=False)
 y_subm_hard.to_csv(sub_file_hard, index=False )