Kaggle competition: COVID19 Global Forecasting (Week 4)
def get_model(cfg):
model_input = tf.keras.Input(shape=(cfg['net_size'], cfg['net_size'], 3), name='imgIn')
 model_input_data = tf.keras.Input(shape=(10,), name='dataIn')
 dense = tf.keras.layers.Dense(256, activation='relu' )(model_input_data)
 dense = tf.keras.layers.BatchNormalization()(dense)
 dense = tf.keras.layers.Dropout(0.5 )(dense)
 dense = tf.keras.layers.Dense(64, activation='relu' )(dense)
 dense = tf.keras.layers.BatchNormalization()(dense)
 dense = tf.keras.layers.Dropout(0.5 )(dense)
 constructor = getattr(efn, f'EfficientNetB6')
 x = constructor(include_top=False, weights='imagenet',
input_shape=(cfg['net_size'], cfg['net_size'], 3),
pooling='avg' )(model_input)
 x = tf.keras.layers.Concatenate()([x, dense])
 x = tf.keras.layers.Dense(256, activation='relu' )(x)
 x = tf.keras.layers.BatchNormalization()(x)
 x = tf.keras.layers.Dropout(0.5 )(x)
 x = tf.keras.layers.Dense(1, activation='sigmoid' )(x)
 model = tf.keras.Model([model_input, model_input_data], x, name='aNetwork')
 model.summary()
return model<choose_model_class>
%matplotlib inline
%config InlineBackend.figure_format = 'retina'
def get_cpmp_sub(save_oof=False, save_public_test=False):
train = pd.read_csv('/kaggle/input/covid19-global-forecasting-week-4/train.csv')
 train['Province_State'].fillna('', inplace=True)
 train['Date'] = pd.to_datetime(train['Date'])
 train['day'] = train.Date.dt.dayofyear
train['geo'] = ['_'.join(x)for x in zip(train['Country_Region'], train['Province_State'])]
train
test = pd.read_csv('/kaggle/input/covid19-global-forecasting-week-4/test.csv')
 test['Province_State'].fillna('', inplace=True)
 test['Date'] = pd.to_datetime(test['Date'])
 test['day'] = test.Date.dt.dayofyear
test['geo'] = ['_'.join(x)for x in zip(test['Country_Region'], test['Province_State'])]
test
day_min = train['day'].min()
train['day'] -= day_min
test['day'] -= day_min
min_test_val_day = test.day.min()
max_test_val_day = train.day.max()
max_test_day = test.day.max()
num_days = max_test_day + 1
min_test_val_day, max_test_val_day, num_days
train['ForecastId'] = -1
test['Id'] = -1
test['ConfirmedCases'] = 0
test['Fatalities'] = 0
debug = False
data = pd.concat([train,
test[test.day > max_test_val_day][train.columns]
] ).reset_index(drop=True)
 if debug:
data = data[data['geo'] >= 'France_'].reset_index(drop=True)
 gc.collect()
dates = data[data['geo'] == 'France_'].Date.values
if 0:
gr = data.groupby('geo')
 data['ConfirmedCases'] = gr.ConfirmedCases.transform('cummax')
 data['Fatalities'] = gr.Fatalities.transform('cummax')
 geo_data = data.pivot(index='geo', columns='day', values='ForecastId')
 num_geo = geo_data.shape[0]
geo_data
geo_id = {}
for i,g in enumerate(geo_data.index):
geo_id[g] = i
ConfirmedCases = data.pivot(index='geo', columns='day', values='ConfirmedCases')
 Fatalities = data.pivot(index='geo', columns='day', values='Fatalities')
 if debug:
cases = ConfirmedCases.values
deaths = Fatalities.values
else:
cases = np.log1p(ConfirmedCases.values)
 deaths = np.log1p(Fatalities.values)
 def get_dataset(start_pred, num_train, lag_period):
days = np.arange(start_pred - num_train + 1, start_pred + 1)
 lag_cases = np.vstack([cases[:, d - lag_period : d] for d in days])
 lag_deaths = np.vstack([deaths[:, d - lag_period : d] for d in days])
 target_cases = np.vstack([cases[:, d : d + 1] for d in days])
 target_deaths = np.vstack([deaths[:, d : d + 1] for d in days])
 geo_ids = np.vstack([geo_ids_base for d in days])
 country_ids = np.vstack([country_ids_base for d in days])
 return lag_cases, lag_deaths, target_cases, target_deaths, geo_ids, country_ids, days
def update_valid_dataset(data, pred_death, pred_case):
lag_cases, lag_deaths, target_cases, target_deaths, geo_ids, country_ids, days = data
day = days[-1] + 1
new_lag_cases = np.hstack([lag_cases[:, 1:], pred_case])
 new_lag_deaths = np.hstack([lag_deaths[:, 1:], pred_death])
 new_target_cases = cases[:, day:day+1]
new_target_deaths = deaths[:, day:day+1]
new_geo_ids = geo_ids
new_country_ids = country_ids
new_days = 1 + days
return new_lag_cases, new_lag_deaths, new_target_cases, new_target_deaths, new_geo_ids, new_country_ids, new_days
def fit_eval(lr_death, lr_case, data, start_lag_death, end_lag_death, num_lag_case, fit, score):
lag_cases, lag_deaths, target_cases, target_deaths, geo_ids, country_ids, days = data
X_death = np.hstack([lag_cases[:, -start_lag_death:-end_lag_death], country_ids])
 X_death = np.hstack([lag_deaths[:, -num_lag_case:], country_ids])
 X_death = np.hstack([lag_cases[:, -start_lag_death:-end_lag_death], lag_deaths[:, -num_lag_case:], country_ids])
 y_death = target_deaths
y_death_prev = lag_deaths[:, -1:]
if fit:
if 0:
keep =(y_death > 0 ).ravel()
X_death = X_death[keep]
y_death = y_death[keep]
y_death_prev = y_death_prev[keep]
lr_death.fit(X_death, y_death)
 y_pred_death = lr_death.predict(X_death)
 y_pred_death = np.maximum(y_pred_death, y_death_prev)
 X_case = np.hstack([lag_cases[:, -num_lag_case:], geo_ids])
 X_case = lag_cases[:, -num_lag_case:]
y_case = target_cases
y_case_prev = lag_cases[:, -1:]
if fit:
lr_case.fit(X_case, y_case)
 y_pred_case = lr_case.predict(X_case)
 y_pred_case = np.maximum(y_pred_case, y_case_prev)
 if score:
death_score = val_score(y_death, y_pred_death)
 case_score = val_score(y_case, y_pred_case)
 else:
death_score = 0
case_score = 0
return death_score, case_score, y_pred_death, y_pred_case
def train_model(train, valid, start_lag_death, end_lag_death, num_lag_case, num_val, score=True):
alpha = 2
lr_death = Ridge(alpha=alpha, fit_intercept=False)
 lr_case = Ridge(alpha=alpha, fit_intercept=True)
(train_death_score, train_case_score, train_pred_death, train_pred_case, 
)= fit_eval(lr_death, lr_case, train, start_lag_death, end_lag_death, num_lag_case, fit=True, score=score)
 death_scores = []
case_scores = []
death_pred = []
case_pred = []
for i in range(num_val): 
(valid_death_score, valid_case_score, valid_pred_death, valid_pred_case, 
)= fit_eval(lr_death, lr_case, valid, start_lag_death, end_lag_death, num_lag_case, fit=False, score=score)
 death_scores.append(valid_death_score)
 case_scores.append(valid_case_score)
 death_pred.append(valid_pred_death)
 case_pred.append(valid_pred_case)
 if 0:
print('val death: %0.3f' % valid_death_score,
'val case: %0.3f' % valid_case_score,
'val : %0.3f' % np.mean([valid_death_score, valid_case_score]),
flush=True)
 valid = update_valid_dataset(valid, valid_pred_death, valid_pred_case)
 if score:
death_scores = np.sqrt(np.mean([s**2 for s in death_scores]))
case_scores = np.sqrt(np.mean([s**2 for s in case_scores]))
if 0:
print('train death: %0.3f' % train_death_score,
'train case: %0.3f' % train_case_score,
'val death: %0.3f' % death_scores,
'val case: %0.3f' % case_scores,
'val : %0.3f' %(( death_scores + case_scores)/ 2),
flush=True)
 else:
print('%0.4f' % case_scores,
', %0.4f' % death_scores,
'= %0.4f' %(( death_scores + case_scores)/ 2),
flush=True)
 death_pred = np.hstack(death_pred)
 case_pred = np.hstack(case_pred)
 return death_scores, case_scores, death_pred, case_pred
countries = [g.split('_')[0] for g in geo_data.index]
countries = pd.factorize(countries)[0]
country_ids_base = countries.reshape(( -1, 1))
ohe = OneHotEncoder(sparse=False)
 country_ids_base = 0.2 * ohe.fit_transform(country_ids_base)
 country_ids_base.shape
geo_ids_base = np.arange(num_geo ).reshape(( -1, 1))
ohe = OneHotEncoder(sparse=False)
 geo_ids_base = 0.1 * ohe.fit_transform(geo_ids_base)
 geo_ids_base.shape
def val_score(true, pred):
pred = np.log1p(np.round(np.expm1(pred)- 0.2))
return np.sqrt(mean_squared_error(true.ravel() , pred.ravel()))
def val_score(true, pred):
return np.sqrt(mean_squared_error(true.ravel() , pred.ravel()))
start_lag_death, end_lag_death = 14, 6,
num_train = 6
num_lag_case = 14
lag_period = max(start_lag_death, num_lag_case)
 def get_oof(start_val_delta=0):
start_val = min_test_val_day + start_val_delta
last_train = start_val - 1
num_val = max_test_val_day - start_val + 1
print(dates[start_val], start_val, num_val)
 train_data = get_dataset(last_train, num_train, lag_period)
 valid_data = get_dataset(start_val, 1, lag_period)
 _, _, val_death_preds, val_case_preds = train_model(train_data, valid_data,
start_lag_death, end_lag_death, num_lag_case, num_val)
 pred_deaths = Fatalities.iloc[:, start_val:start_val+num_val].copy()
pred_deaths.iloc[:, :] = np.expm1(val_death_preds)
 pred_deaths = pred_deaths.stack().reset_index()
pred_deaths.columns = ['geo', 'day', 'Fatalities']
pred_deaths
pred_cases = ConfirmedCases.iloc[:, start_val:start_val+num_val].copy()
pred_cases.iloc[:, :] = np.expm1(val_case_preds)
 pred_cases = pred_cases.stack().reset_index()
pred_cases.columns = ['geo', 'day', 'ConfirmedCases']
pred_cases
sub = train[['Date', 'Id', 'geo', 'day']]
sub = sub.merge(pred_cases, how='left', on=['geo', 'day'])
 sub = sub.merge(pred_deaths, how='left', on=['geo', 'day'])
 sub = sub[sub.day >= start_val]
sub = sub[['Id', 'ConfirmedCases', 'Fatalities']].copy()
return sub
if save_oof:
for start_val_delta, date in zip(range(3, -8, -3),
['2020-03-22', '2020-03-19', '2020-03-16', '2020-03-13']):
print(date, end=' ')
 oof = get_oof(start_val_delta)
 oof.to_csv('.. /submissions/cpmp-%s.csv' % date, index=None)
 def get_sub(start_val_delta=0):
start_val = min_test_val_day + start_val_delta
last_train = start_val - 1
num_val = max_test_val_day - start_val + 1
print(dates[last_train], start_val, num_val)
 num_lag_case = 14
train_data = get_dataset(last_train, num_train, lag_period)
 valid_data = get_dataset(start_val, 1, lag_period)
 _, _, val_death_preds, val_case_preds = train_model(train_data, valid_data,
start_lag_death, end_lag_death, num_lag_case, num_val)
 pred_deaths = Fatalities.iloc[:, start_val:start_val+num_val].copy()
pred_deaths.iloc[:, :] = np.expm1(val_death_preds)
 pred_deaths = pred_deaths.stack().reset_index()
pred_deaths.columns = ['geo', 'day', 'Fatalities']
pred_deaths
pred_cases = ConfirmedCases.iloc[:, start_val:start_val+num_val].copy()
pred_cases.iloc[:, :] = np.expm1(val_case_preds)
 pred_cases = pred_cases.stack().reset_index()
pred_cases.columns = ['geo', 'day', 'ConfirmedCases']
pred_cases
sub = test[['Date', 'ForecastId', 'geo', 'day']]
sub = sub.merge(pred_cases, how='left', on=['geo', 'day'])
 sub = sub.merge(pred_deaths, how='left', on=['geo', 'day'])
 sub = sub.fillna(0)
 sub = sub[['ForecastId', 'ConfirmedCases', 'Fatalities']]
return sub
return sub
known_test = train[['geo', 'day', 'ConfirmedCases', 'Fatalities']
].merge(test[['geo', 'day', 'ForecastId']], how='left', on=['geo', 'day'])
 known_test = known_test[['ForecastId', 'ConfirmedCases', 'Fatalities']][known_test.ForecastId.notnull() ].copy()
known_test
unknow_test = test[test.day > max_test_val_day]
unknow_test
def get_final_sub() :
start_val = max_test_val_day + 1
last_train = start_val - 1
num_val = max_test_day - start_val + 1
print(dates[last_train], start_val, num_val)
 num_lag_case = num_val + 3
train_data = get_dataset(last_train, num_train, lag_period)
 valid_data = get_dataset(start_val, 1, lag_period)
(_, _, val_death_preds, val_case_preds 
)= train_model(train_data, valid_data, start_lag_death, end_lag_death, num_lag_case, num_val, score=False)
 pred_deaths = Fatalities.iloc[:, start_val:start_val+num_val].copy()
pred_deaths.iloc[:, :] = np.expm1(val_death_preds)
 pred_deaths = pred_deaths.stack().reset_index()
pred_deaths.columns = ['geo', 'day', 'Fatalities']
pred_deaths
pred_cases = ConfirmedCases.iloc[:, start_val:start_val+num_val].copy()
pred_cases.iloc[:, :] = np.expm1(val_case_preds)
 pred_cases = pred_cases.stack().reset_index()
pred_cases.columns = ['geo', 'day', 'ConfirmedCases']
pred_cases
print(unknow_test.shape, pred_deaths.shape, pred_cases.shape)
 sub = unknow_test[['Date', 'ForecastId', 'geo', 'day']]
sub = sub.merge(pred_cases, how='left', on=['geo', 'day'])
 sub = sub.merge(pred_deaths, how='left', on=['geo', 'day'])
 sub = sub[['ForecastId', 'ConfirmedCases', 'Fatalities']]
sub = pd.concat([known_test, sub])
 return sub
if save_public_test:
sub = get_sub()
else:
sub = get_final_sub()
return sub
def get_nn_sub() :
df = pd.read_csv(".. /input/covid19-global-forecasting-week-4/train.csv")
 sub_df = pd.read_csv(".. /input/covid19-global-forecasting-week-4/test.csv")
 coo_df = pd.read_csv(".. /input/week11/train.csv" ).rename(columns={"Country/Region": "Country_Region"})
 coo_df = coo_df.groupby("Country_Region")[["Lat", "Long"]].mean().reset_index()
coo_df = coo_df[coo_df["Country_Region"].notnull() ]
loc_group = ["Province_State", "Country_Region"]
def preprocess(df):
df["Date"] = df["Date"].astype("datetime64[ms]")
 df["days"] =(df["Date"] - pd.to_datetime("2020-01-01")).dt.days
df["weekend"] = df["Date"].dt.dayofweek//5
df = df.merge(coo_df, how="left", on="Country_Region")
 df["Lat"] =(df["Lat"] // 30 ).astype(np.float32 ).fillna(0)
 df["Long"] =(df["Long"] // 60 ).astype(np.float32 ).fillna(0)
 for col in loc_group:
df[col].fillna("none", inplace=True)
 return df
df = preprocess(df)
 sub_df = preprocess(sub_df)
 print(df.shape)
 TARGETS = ["ConfirmedCases", "Fatalities"]
for col in TARGETS:
df[col] = np.log1p(df[col])
 NUM_SHIFT = 5
features = ["Lat", "Long"]
for s in range(1, NUM_SHIFT+1):
for col in TARGETS:
df["prev_{}_{}".format(col, s)] = df.groupby(loc_group)[col].shift(s)
 features.append("prev_{}_{}".format(col, s))
df = df[df["Date"] >= df["Date"].min() + timedelta(days=NUM_SHIFT)].copy()
TEST_FIRST = sub_df["Date"].min()
TEST_DAYS =(df["Date"].max() - TEST_FIRST ).days + 1
dev_df, test_df = df[df["Date"] < TEST_FIRST].copy() , df[df["Date"] >= TEST_FIRST].copy()
def nn_block(input_layer, size, dropout_rate, activation):
out_layer = KL.Dense(size, activation=None )(input_layer)
 out_layer = KL.Activation(activation )(out_layer)
 out_layer = KL.Dropout(dropout_rate )(out_layer)
 return out_layer
def get_model() :
inp = KL.Input(shape=(len(features),))
hidden_layer = nn_block(inp, 506, 0.0, "relu")
 gate_layer = nn_block(hidden_layer, 253, 0.0, "hard_sigmoid")
 hidden_layer = nn_block(hidden_layer, 253, 0.0, "relu")
 hidden_layer = KL.multiply([hidden_layer, gate_layer])
 out = KL.Dense(len(TARGETS), activation="linear" )(hidden_layer)
 model = tf.keras.models.Model(inputs=[inp], outputs=out)
 return model
get_model().summary()
def get_input(df):
return [df[features]]
NUM_MODELS = 100
def train_models(df, save=False):
models = []
for i in range(NUM_MODELS):
model = get_model()
model.compile(loss="mean_squared_error", optimizer=Nadam(lr=1e-4))
hist = model.fit(get_input(df), df[TARGETS],
batch_size=2250, epochs=1000, verbose=0, shuffle=True)
 if save:
model.save_weights("model{}.h5".format(i))
models.append(model)
 return models
models = train_models(dev_df)
 prev_targets = ['prev_ConfirmedCases_1', 'prev_Fatalities_1']
def predict_one(df, models):
pred = np.zeros(( df.shape[0], 2))
for model in models:
pred += model.predict(get_input(df)) /len(models)
 pred = np.maximum(pred, df[prev_targets].values)
 pred[:, 0] = np.log1p(np.expm1(pred[:, 0])+ 0.1)
 pred[:, 1] = np.log1p(np.expm1(pred[:, 1])+ 0.01)
 return np.clip(pred, None, 15)
 print([mean_squared_error(dev_df[TARGETS[i]], predict_one(dev_df, models)[:, i])for i in range(len(TARGETS)) ])
 def rmse(y_true, y_pred):
return np.sqrt(mean_squared_error(y_true, y_pred))
def evaluate(df):
error = 0
for col in TARGETS:
error += rmse(df[col].values, df["pred_{}".format(col)].values)
 return np.round(error/len(TARGETS), 5)
 def predict(test_df, first_day, num_days, models, val=False):
temp_df = test_df.loc[test_df["Date"] == first_day].copy()
y_pred = predict_one(temp_df, models)
 for i, col in enumerate(TARGETS):
test_df["pred_{}".format(col)] = 0
test_df.loc[test_df["Date"] == first_day, "pred_{}".format(col)] = y_pred[:, i]
print(first_day, np.isnan(y_pred ).sum() , y_pred.min() , y_pred.max())
 if val:
print(evaluate(test_df[test_df["Date"] == first_day]))
y_prevs = [None]*NUM_SHIFT
for i in range(1, NUM_SHIFT):
y_prevs[i] = temp_df[['prev_ConfirmedCases_{}'.format(i), 'prev_Fatalities_{}'.format(i)]].values
for d in range(1, num_days):
date = first_day + timedelta(days=d)
 print(date, np.isnan(y_pred ).sum() , y_pred.min() , y_pred.max())
 temp_df = test_df.loc[test_df["Date"] == date].copy()
temp_df[prev_targets] = y_pred
for i in range(2, NUM_SHIFT+1):
temp_df[['prev_ConfirmedCases_{}'.format(i), 'prev_Fatalities_{}'.format(i)]] = y_prevs[i-1]
y_pred, y_prevs = predict_one(temp_df, models), [None, y_pred] + y_prevs[1:-1]
for i, col in enumerate(TARGETS):
test_df.loc[test_df["Date"] == date, "pred_{}".format(col)] = y_pred[:, i]
if val:
print(evaluate(test_df[test_df["Date"] == date]))
return test_df
test_df = predict(test_df, TEST_FIRST, TEST_DAYS, models, val=True)
 print(evaluate(test_df))
for col in TARGETS:
test_df[col] = np.expm1(test_df[col])
 test_df["pred_{}".format(col)] = np.expm1(test_df["pred_{}".format(col)])
 models = train_models(df, save=True)
 sub_df_public = sub_df[sub_df["Date"] <= df["Date"].max() ].copy()
sub_df_private = sub_df[sub_df["Date"] > df["Date"].max() ].copy()
pred_cols = ["pred_{}".format(col)for col in TARGETS]
sub_df_public = sub_df_public.merge(test_df[["Date"] + loc_group + TARGETS], how="left", on=["Date"] + loc_group)
 SUB_FIRST = sub_df_private["Date"].min()
SUB_DAYS =(sub_df_private["Date"].max() - sub_df_private["Date"].min() ).days + 1
sub_df_private = df.append(sub_df_private, sort=False)
 for s in range(1, NUM_SHIFT+1):
for col in TARGETS:
sub_df_private["prev_{}_{}".format(col, s)] = sub_df_private.groupby(loc_group)[col].shift(s)
 sub_df_private = sub_df_private[sub_df_private["Date"] >= SUB_FIRST].copy()
sub_df_private = predict(sub_df_private, SUB_FIRST, SUB_DAYS, models)
 for col in TARGETS:
sub_df_private[col] = np.expm1(sub_df_private["pred_{}".format(col)])
 sub_df = sub_df_public.append(sub_df_private, sort=False)
 sub_df["ForecastId"] = sub_df["ForecastId"].astype(np.int16)
 return sub_df[["ForecastId"] + TARGETS]
sub1 = get_cpmp_sub()
sub1['ForecastId'] = sub1['ForecastId'].astype('int')
 sub2 = get_nn_sub()
sub1.sort_values("ForecastId", inplace=True)
 sub2.sort_values("ForecastId", inplace=True)
 TARGETS = ["ConfirmedCases", "Fatalities"]
[np.sqrt(mean_squared_error(np.log1p(sub1[t].values), np.log1p(sub2[t].values)))for t in TARGETS]
sub_df = sub1.copy()
for t in TARGETS:
sub_df[t] = np.expm1(np.log1p(sub1[t].values)*0.5 + np.log1p(sub2[t].values)*0.5)
def compile_new_model(cfg, old_model=None):
with strategy.scope() :
if(old_model is None):
model = get_model(cfg)
 else:
model = old_model
model.compile(
 optimizer = tf.keras.optimizers.Adam(learning_rate=0.1),
loss = tf.keras.losses.BinaryCrossentropy(label_smoothing = cfg['label_smooth_fac']),
metrics = [tf.keras.metrics.AUC(name='auc')])
 return model<load_from_csv>
train = pd.read_csv('.. /input/covid19-global-forecasting-week-4/train.csv')
 train['Date'] = pd.to_datetime(train['Date'])
 def dealing_with_null_values(dataset):
dataset = dataset
for i in dataset.columns:
replace = []
data = dataset[i].isnull()
count = 0
for j,k in zip(data,dataset[i]):
if(j==True):
count = count+1
replace.append('No Information Available')
 else:
replace.append(k)
 print("Num of null values(",i,"):",count)
 dataset[i] = replace
return dataset
train = dealing_with_null_values(train)
 def fillState(state, country):
if state == 'No Information Available': return country
return state
train['Province_State'] = train.loc[:, ['Province_State', 'Country_Region']].apply(lambda x : fillState(x['Province_State'], x['Country_Region']), axis=1)
 train.loc[:, 'Date'] = train.Date.dt.strftime("%m%d")
 train["Date"] = train["Date"].astype(int)
 le = preprocessing.LabelEncoder()
train.Country_Region = le.fit_transform(train.Country_Region)
 train.Province_State = le.fit_transform(train.Province_State)
 data = pd.DataFrame()
data['Province_State']=train['Province_State']
data['Country_Region']=train['Country_Region']
data['Date']=train['Date']
xmodel1 = XGBRegressor(n_estimators=1000)
 xmodel1.fit(data,train['ConfirmedCases'])
 xmodel2 = XGBRegressor(n_estimators=1000)
 xmodel2.fit(data,train['Fatalities'])
 test = pd.read_csv('.. /input/covid19-global-forecasting-week-4/test.csv')
 test['Date'] = pd.to_datetime(test['Date'], infer_datetime_format=True)
 test = dealing_with_null_values(test)
 test['Province_State'] = test.loc[:, ['Province_State', 'Country_Region']].apply(lambda x : fillState(x['Province_State'], x['Country_Region']), axis=1)
 test.loc[:, 'Date'] = test.Date.dt.strftime("%m%d")
 test["Date"] = test["Date"].astype(int)
 le = preprocessing.LabelEncoder()
test.Country_Region = le.fit_transform(test.Country_Region)
 test.Province_State = le.fit_transform(test.Province_State)
 test_data = pd.DataFrame()
test_data['Province_State'] = test['Province_State']
test_data['Country_Region'] = test['Country_Region']
test_data['Date'] = test['Date']
filterwarnings('ignore')
 output = pd.DataFrame({'ForecastId': [], 'ConfirmedCases': [], 'Fatalities': []})
 for i in test['Country_Region'].unique() :
s = test[test['Country_Region'] == i].Province_State.unique()
for j in s:
output_train = data[(data['Country_Region'] == i)&(data['Province_State'] == j)]
output_test = test_data[(test_data['Country_Region']==i)&(test_data['Province_State'] == j)]
output_train_with_labels = train[(train['Country_Region'] == i)&(train['Province_State'] == j)]
index_test = test[(test['Country_Region']==i)&(test['Province_State'] == j)]
index_test = index_test['ForecastId']
xmodel1 = XGBRegressor(n_estimators=1000)
 xmodel1.fit(output_train,output_train_with_labels['ConfirmedCases'])
 xmodel2 = XGBRegressor(n_estimators=1000)
 xmodel2.fit(output_train,output_train_with_labels['Fatalities'])
 y1_xpred_output = xmodel1.predict(output_test)
 y2_xpred_output = xmodel2.predict(output_test)
 for_output = pd.DataFrame()
for_output['ForecastId'] = index_test
for_output['ConfirmedCases'] = y1_xpred_output
for_output['Fatalities']=y2_xpred_output
output = pd.concat([output, for_output], axis=0)
 output['ForecastId']= output['ForecastId'].astype('int' )
train = pd.read_csv('.. /input/siim-isic-melanoma-classification/train.csv')
 class_weights = class_weight.compute_class_weight('balanced',
np.unique(train.target),
train.target)
 class_weights = dict(enumerate(class_weights))<train_on_grid>
import pandas as pd
from pathlib import Path
from pandas_profiling import ProfileReport
from sklearn.tree import DecisionTreeClassifier
from sklearn.preprocessing import LabelEncoder
import datetime
from sklearn.model_selection import GridSearchCV
from sklearn import preprocessing
from sklearn.model_selection import cross_val_score
file_path="/kaggle/working/effnet4_weights.best.hdf5"
checkpoint = ModelCheckpoint(file_path, monitor='auc', verbose=1, save_best_only=True, mode='max' )<split>
dataset_path = Path('/kaggle/input/covid19-global-forecasting-week-4')
 train = pd.read_csv(dataset_path/'train.csv')
 test = pd.read_csv(dataset_path/'test.csv')
 submission = pd.read_csv(dataset_path/'submission.csv' )
kf = KFold(5, shuffle=True)
 train_index, test_index = next(kf.split(files_train))
train = files_train[train_index]
ds_train = get_dataset(files_train[train_index], CFG, augment=True, shuffle=True, repeat=True)
 ds_val = get_dataset(files_train[test_index], CFG, augment=True, shuffle=True, repeat=False)
 steps_train = count_data_items(files_train[train_index])/(CFG['batch_size'] * REPLICAS )<load_pretrained>
def fill_state(state,country):
if pd.isna(state): return country
return state
print("Buidling model...")
 model = compile_new_model(CFG)
 model.load_weights('.. /input/effnet-pretrained-25-epochs/effnet4_weights.best.hdf5' )<train_model>
train['Province_State'] = train.loc[:, ['Province_State', 'Country_Region']].apply(lambda x : fill_state(x['Province_State'], x['Country_Region']), axis=1)
 test['Province_State'] = test.loc[:, ['Province_State', 'Country_Region']].apply(lambda x : fill_state(x['Province_State'], x['Country_Region']), axis=1 )
history = model.fit(ds_train,
validation_data = ds_val,
verbose = 1,
steps_per_epoch = steps_train,
epochs = CFG['epochs'],
callbacks = [checkpoint, get_lr_callback(CFG)],
class_weight=class_weights )<load_pretrained>
train['Date'] = pd.to_datetime(train['Date'],infer_datetime_format=True)
 test['Date'] = pd.to_datetime(test['Date'],infer_datetime_format=True)
 train['Day_of_Week'] = train['Date'].dt.dayofweek
test['Day_of_Week'] = test['Date'].dt.dayofweek
train['Month'] = train['Date'].dt.month
test['Month'] = test['Date'].dt.month
train['Day'] = train['Date'].dt.day
test['Day'] = test['Date'].dt.day
train['Day_of_Year'] = train['Date'].dt.dayofyear
test['Day_of_Year'] = test['Date'].dt.dayofyear
train['Week_of_Year'] = train['Date'].dt.weekofyear
test['Week_of_Year'] = test['Date'].dt.weekofyear
train['Quarter'] = train['Date'].dt.quarter
test['Quarter'] = test['Date'].dt.quarter
train.drop('Date',1,inplace=True)
 test.drop('Date',1,inplace=True )
model = compile_new_model(CFG)
 model.load_weights(file_path )<predict_on_test>
submission=pd.DataFrame(columns=submission.columns)
 l1=LabelEncoder()
l2=LabelEncoder()
l1.fit(train['Country_Region'])
 l2.fit(train['Province_State'] )
CFG['batch_size'] = 128
cnt_test = count_data_items(files_test)
 steps = cnt_test /(CFG['batch_size'] * REPLICAS)* CFG['tta_steps']
ds_testAug = get_dataset(files_test, CFG, augment=True, repeat=True,
labeled=False, return_image_names=False)
 probs = model.predict(ds_testAug, verbose=1, steps=steps)
 probs = np.stack(probs)
 probs = probs2 = probs[:cnt_test * CFG['tta_steps'],0]
probs = np.stack(np.split(probs, CFG['tta_steps'], axis=0), axis=1)
 probs = np.mean(probs, axis=1 )<create_dataframe>
countries=train['Country_Region'].unique()
for country in countries:
country_df=train[train['Country_Region']==country]
provinces=country_df['Province_State'].unique()
for province in provinces:
train_df=country_df[country_df['Province_State']==province]
train_df.pop('Id')
 x=train_df[['Province_State','Country_Region','Day_of_Week','Month','Day','Day_of_Year','Week_of_Year','Quarter']]
x['Country_Region']=l1.transform(x['Country_Region'])
 x['Province_State']=l2.transform(x['Province_State'])
 y1=train_df[['ConfirmedCases']]
y2=train_df[['Fatalities']]
model_1=DecisionTreeClassifier()
model_2=DecisionTreeClassifier()
model_1.fit(x,y1)
 model_2.fit(x,y2)
 test_df=test.query('Province_State==@province & Country_Region==@country')
 test_id=test_df['ForecastId'].values.tolist()
test_df.pop('ForecastId')
 test_x=test_df[['Province_State','Country_Region','Day_of_Week','Month','Day','Day_of_Year','Week_of_Year','Quarter']]
test_x['Country_Region']=l1.transform(test_x['Country_Region'])
 test_x['Province_State']=l2.transform(test_x['Province_State'])
 test_y1=model_1.predict(test_x)
 test_y2=model_2.predict(test_x)
 test_res=pd.DataFrame(columns=submission.columns)
 test_res['ForecastId']=test_id
test_res['ConfirmedCases']=test_y1
test_res['Fatalities']=test_y2
submission=submission.append(test_res )
ds = get_dataset(files_test, CFG, augment=False, repeat=False,
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>
lcc=submission["ConfirmedCases"]
lf=submission["Fatalities"]
buscc = output["ConfirmedCases"]
busf = output["Fatalities"]
sdfcc = sub_df["ConfirmedCases"]
sdff = sub_df["Fatalities"]
sub_df["ConfirmedCases"] = 0.1 * buscc.values + 0.9 * sdfcc.values
sub_df["Fatalities"] = 0.1 * busf.values + 0.9 * sdff.values
sub_df.to_csv('submission.csv',index=False )