def get_params(params_str):
if get_opt('model') == 'keras':
names = [
'batch_size', 'dense_cate', 'dense_nume_n_layers', 'drop',
'emb_cate', 'epochs_for_lr', 'lr', 'lr_fin', 'lr_init',
'max_epochs', 'n_layers', 'patience'
]
elif 'LGBM' in get_opt('model'):
names = [
'boosting_type', 'colsample_bytree', 'learning_rate', 'max_bin',
'max_depth', 'metric', 'min_child_samples', 'min_child_weight',
'min_split_gain', 'nthread', 'num_leaves', 'objective',
'reg_alpha', 'reg_lambda', 'scale_pos_weight', 'subsample',
'subsample_for_bin', 'subsample_freq', 'verbose'
]
else:
print("no valid target")
sys.exit(1)
pvals = params_str.split(',')
del pvals[0]
if len(pvals) != len(names):
print(
'!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ERR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
)
print('params: count is not fit', len(pvals), len(names))
print('params_str:', params_str)
print('names:', names)
print('param_values:', pvals)
sys.exit()
params = dict(zip(names, pvals))
return params
def on_epoch_end(self, epoch, logs={}):
if self.x_tr:
y_pred = self.model.predict(self.x_tr,batch_size=1000)
roc_tr = roc_auc_score(self.y_tr, y_pred)
else:
roc_tr = 0
y_hat_val=self.model.predict(self.x_val,batch_size=1000)
roc_val = roc_auc_score(self.y_val, y_hat_val)
if self.x_te:
y_hat_te=self.model.predict(self.x_te,batch_size=1000)
roc_te = roc_auc_score(self.y_te, y_hat_te)
else:
roc_te = 0
print('roc-auc: %s - roc-auc_val: %s - roc-auc_test: %s' % (str(round(roc_tr,6)),str(round(roc_val,6)), str(round(roc_te,6))),end=100*' '+'\n')
if self.model_file:
print("saving",self.model_file+'.'+str(epoch))
self.model.save_weights(self.model_file+'.'+str(epoch))
if(self.x_val):
if get_opt('testCheck','-') == 'on':
current = roc_te
else:
current = roc_val
if self.monitor_op(current - self.min_delta, self.best):
self.best = current
self.best_epoch = epoch
self.wait = 0
else:
self.wait += 1
if self.wait >= self.patience:
self.stopped_epoch = epoch
self.model.stop_training = True
def Predict(X_tr,X_va,X_te,predictors,cat_feats,seed=2018):
model = get_opt('model')
if 'LGBM' in model:
return LGBM(X_tr,X_va,X_te,predictors,cat_feats,seed=2018)
elif 'keras' in model:
return Keras(X_tr,X_va,X_te,predictors,cat_feats,seed=2018)
else:
print("no valid model")
sys.exit(1)
def Keras(X_tr, X_va, X_te, predictors, cat_feats, seed=2018):
params_str = get_opt('params')
if params_str != None:
params = get_params(params_str)
return Keras0_helper(X_tr,
X_va,
X_te,
predictors,
cat_feats,
params,
seed=2018)
def LGBM_helper(_X_tr,_X_va,_X_te,predictors,cat_feats,params,seed=2018):
os.environ['PYTHONHASHSEED'] = '0'
np.random.seed(seed)
rn.seed(seed)
X_tr = _X_tr[predictors]
X_va = _X_va[predictors]
X_te = _X_te[predictors]
y_tr = _X_tr['is_attributed']
y_va = _X_va['is_attributed']
y_te = _X_te['is_attributed']
params['feature_fraction_seed'] = seed
params['bagging_seed'] = seed
params['drop_seed'] = seed
params['data_random_seed'] = seed
params['num_leaves'] = int(params['num_leaves'])
params['subsample_for_bin'] = int(params['subsample_for_bin'])
params['max_depth'] = int(np.log2(params['num_leaves'])+1.2)
params['max_bin'] = int(params['max_bin'])
print('*'*50)
for k,v in sorted(params.items()):
print(k,':',v)
columns = X_tr.columns
print('start for lgvalid')
lgvalid = lgb.Dataset(X_va, label=y_va, categorical_feature=cat_feats)
_X_va.drop(predictors,axis=1)
del _X_va, X_va, y_va
gc.collect()
print('start for lgtrain')
lgtrain = lgb.Dataset(X_tr, label=y_tr, categorical_feature=cat_feats)
_X_te.drop(predictors,axis=1)
del _X_tr, X_tr, y_tr
gc.collect()
evals_results = {}
if get_opt('trainCheck','-') == 'on':
valid_names=['train','valid']
valid_sets=[lgtrain, lgvalid]
else:
valid_names=['valid']
valid_sets=[lgvalid]
if get_opt('testCheck','-') == 'on':
valid_names.append('test')
lgtest = lgb.Dataset(X_te, label=y_te, categorical_feature=cat_feats)
valid_sets.append(lgtest)
print('start training')
bst = lgb.train(params,
lgtrain,
valid_sets=valid_sets,
valid_names=valid_names,
evals_result=evals_results,
num_boost_round=2000,
early_stopping_rounds=100,
verbose_eval=10,
)
importance = bst.feature_importance()
print('importance (count)')
tuples = sorted(zip(columns, importance), key=lambda x: x[1],reverse=True)
for col, val in tuples:
print(val,"\t",col)
importance = bst.feature_importance(importance_type='gain')
print('importance (gain)')
tuples = sorted(zip(columns, importance), key=lambda x: x[1],reverse=True)
for col, val in tuples:
print(val,"\t",col)
n_estimators = bst.best_iteration
metric = params['metric']
auc = evals_results['valid'][metric][n_estimators-1]
_X_te['pred'] = bst.predict(X_te)
return auc
def Keras0_helper(_X_tr,_X_va,_X_te,predictors,cat_feats,params,seed=2018):
np.random.seed(seed)
rn.seed(seed)
X_tr = _X_tr[predictors]
X_va = _X_va[predictors]
X_te = _X_te[predictors]
y_tr = _X_tr['TARGET']
y_va = _X_va['TARGET']
y_te = _X_te['TARGET']
print('*************params**************')
for f in sorted(params): print(f+":",params[f])
batch_size = int(params['batch_size'])
epochs_for_lr = float(params['epochs_for_lr'])
max_epochs = int(params['max_epochs'])
emb_cate = int(params['emb_cate'])
dense_cate = int(params['dense_cate'])
dense_nume_n_layers = int(params['dense_nume_n_layers'])
drop = float(params['drop'])
lr= float(params['lr'])
lr_init = float(params['lr_init'])
lr_fin = float(params['lr_fin'])
n_layers = int(params['n_layers'])
patience = int(params['patience'])
train_dict = {}
valid_dict = {}
test_dict = {}
input_list = []
emb_list = []
numerical_feats = []
tot_emb_n = 0
for col in X_tr:
if col not in cat_feats:
numerical_feats.append(col)
if len(cat_feats) > 0:
for col in cat_feats:
train_dict[col] = np.array(X_tr[col])
valid_dict[col] = np.array(X_va[col])
test_dict[col] = np.array(X_te[col])
inpt = Input(shape=[1], name = col)
input_list.append(inpt)
max_val = np.max([X_tr[col].max(), X_va[col].max(), X_te[col].max()])+1
emb_n = np.min([emb_cate, max_val])
if get_opt('fixEmb','on') == 'on':
emb_n = emb_cate
tot_emb_n += emb_n
if emb_n == 1:
print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Warinig!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! emb_1 = 1")
return 0
print('Embedding size:',max_val, emb_cate, X_tr[col].max(), X_va[col].max(), X_te[col].max(), emb_n,col)
embd = Embedding(max_val, emb_n)(inpt)
emb_list.append(embd)
if len(emb_list) == 1:
print("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Warinig!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! emb_list = 1")
return 0
fe = concatenate(emb_list)
s_dout = SpatialDropout1D(drop)(fe)
x1 = Flatten()(s_dout)
if get_opt('sameNDenseAsEmb','-') == 'on':
dense_cate = tot_emb_n
if len(numerical_feats) > 0:
train_dict['numerical'] = X_tr[numerical_feats].values
valid_dict['numerical'] = X_va[numerical_feats].values
test_dict['numerical'] = X_te[numerical_feats].values
inpt = Input((len(numerical_feats),),name='numerical')
input_list.append(inpt)
x2 = inpt
for n in range(dense_nume_n_layers):
x2 = Dense(dense_cate,activation='relu',kernel_initializer=RandomUniform(seed=seed))(x2)
if get_opt('numeDropout','on') != 'off':
x2 = Dropout(drop)(x2)
if get_opt('NumeBatchNormalization','on') != 'off':
x2 = BatchNormalization()(x2)
if len(numerical_feats) > 0 and len(cat_feats) > 0:
x = concatenate([x1, x2])
elif len(numerical_feats) > 0:
x = x2
elif len(cat_feats) > 0:
x = x1
else:
return 0 # for small data test
for n in range(n_layers):
x = Dense(dense_cate,activation='relu',kernel_initializer=RandomUniform(seed=seed))(x)
if get_opt('lastDropout','on') != 'off':
x = Dropout(drop)(x)
if get_opt('BatchNormalization','off') == 'on' or get_opt('LastBatchNormalization','off') == 'on':
x = BatchNormalization()(x)
outp = Dense(1,activation='sigmoid',kernel_initializer=RandomUniform(seed=seed))(x)
model = Model(inputs=input_list, outputs=outp)
if get_opt('optimizer','expo') == 'adam':
optimizer = Adam(lr=lr)
elif get_opt('optimizer','expo') == 'nadam':
optimizer = Nadam(lr=lr)
else:
exp_decay = lambda init, fin, steps: (init/fin)**(1/(steps-1)) - 1
steps = int(len(X_tr) / batch_size) * epochs_for_lr
lr_init, lr_fin = 0.001, 0.0001
lr_decay = exp_decay(lr_init, lr_fin, steps)
optimizer = Adam(lr=lr, decay=lr_decay)
model.compile(loss='binary_crossentropy',optimizer=optimizer)
model.summary()
#from keras.utils import plot_model
#plot_model(model, to_file='model.png')
model_file = '../work/weights.'+str(os.getpid())+'.hdf5'
if get_opt('trainCheck','-') == 'on':
training_data=(train_dict, y_tr)
else:
training_data=False
if get_opt('testCheck','-') == 'on':
testing_data=(test_dict, y_te)
else:
testing_data=False
aucEarlyStopping = EarlyStopping(
training_data=training_data,
validation_data=(valid_dict,y_va),
testing_data=testing_data,
patience=patience,
model_file=model_file,
verbose=1)
model.fit(train_dict,
y_tr,
validation_data=[valid_dict, y_va],
batch_size=batch_size,
epochs=max_epochs,
shuffle=True,
verbose=2,
callbacks=[aucEarlyStopping])
best_epoch = aucEarlyStopping.best_epoch
print('loading',model_file+'.'+str(best_epoch))
model.load_weights(model_file+'.'+str(best_epoch))
_X_te['pred'] = model.predict(test_dict, batch_size=batch_size, verbose=2)[:,0]
_X_va['pred'] = model.predict(valid_dict, batch_size=batch_size, verbose=2)[:,0]
if get_opt('avgEpoch',0) > 0:
added = 1
for i in range(min(get_opt('avgEpoch',0),patience)):
best_epoch = aucEarlyStopping.best_epoch + (i+1)
if best_epoch >= max_epochs:
continue
print('loading',model_file+'.'+str(best_epoch))
model.load_weights(model_file+'.'+str(best_epoch))
_X_te['pred'] += model.predict(test_dict, batch_size=batch_size, verbose=2)[:,0]*0.5
_X_va['pred'] += model.predict(valid_dict, batch_size=batch_size, verbose=2)[:,0]*0.5
added += 0.5
best_epoch = aucEarlyStopping.best_epoch - (i+1)
if best_epoch < 0:
continue
print('loading',model_file+'.'+str(best_epoch))
model.load_weights(model_file+'.'+str(best_epoch))
_X_te['pred'] += model.predict(test_dict, batch_size=batch_size, verbose=2)[:,0]*0.5
_X_va['pred'] += model.predict(valid_dict, batch_size=batch_size, verbose=2)[:,0]*0.5
added += 0.5
_X_te['pred'] /= added
_X_va['pred'] /= added
os.system('rm -f '+model_file+'.*')
auc = roc_auc_score(y_va, _X_va.pred)
return auc
train_df, test_df, numerical_patterns, cat_patterns = read_data_ph1()
predictors = numerical_patterns + cat_patterns
categorical = cat_patterns
is_val = (train_df['day'] == 9) & ((train_df['hour'] == 13) |
(train_df['hour'] == 17) |
(train_df['hour'] == 21))
val_df = train_df[is_val]
train_df = train_df[~is_val]
auc = model_lib.Predict(train_df,
val_df,
test_df,
predictors,
categorical,
seed=get_opt('seed', 2018))
print('validation auc:', auc)
test_df = test_df[['pred']].rename(columns={'pred': 'is_attributed'})
mapping = read_csv('../input/mapping.csv')
click_id = read_csv('../input/sample_submission.csv', usecols=['click_id'])
test_df = test_df.reset_index().merge(mapping,
left_on='index',
right_on='old_click_id',
how='left')
test_df = click_id.merge(test_df, on='click_id', how='left')
outfile = '../csv/pred_test_' + target + '.csv'
print('writing to', outfile)
test_df[['click_id', 'is_attributed']].to_csv(outfile, index=False)
