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19 changes: 18 additions & 1 deletion q01_load_data/build.py
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# %load q01_load_data/build.py
# Default imports
import pandas as pd
from sklearn.model_selection import train_test_split


path = 'data/house_prices_multivariate.csv'

# def load_data(path):
# df= pd.read_csv(path)
# #return df
# X=df.iloc[:,:-1]
# y=df['SalePrice']
# #tts
# X_train, X_test, y_train, y_test = train_test_split(df, y,random_state=9, test_size=0.33)
# return df,X_train, X_test, y_train, y_test
def load_data(path,test_size=0.33,Random_state=9):
df = pd.read_csv(path)
X = df.iloc[:,:-1]
y = df['SalePrice']
X_train, X_test, y_train, y_test = train_test_split(X, y, random_state=9, test_size=test_size)
return df,X_train, X_test, y_train, y_test

load_data(path)


# Write your solution here

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8 changes: 8 additions & 0 deletions q02_Max_important_feature/build.py
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# %load q02_Max_important_feature/build.py
# Default imports
from greyatomlib.advanced_linear_regression.q01_load_data.build import load_data

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# Write your code here
def Max_important_feature(data_set,target_variable='SalePrice',n=4):
#f.drop('Target', axis=1).apply(lambda x: x.corr(df.Target))
coloumns=data_set.corr().nlargest(n+1,target_variable)[target_variable].index[1:n+1]
return coloums
Max_important_feature(data_set)


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9 changes: 8 additions & 1 deletion q03_polynomial/build.py
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# %load q03_polynomial/build.py
# Default imports
from greyatomlib.advanced_linear_regression.q01_load_data.build import load_data
from sklearn.preprocessing import PolynomialFeatures
Expand All @@ -7,5 +8,11 @@
# We have already loaded the data for you
data_set, X_train, X_test, y_train, y_test = load_data('data/house_prices_multivariate.csv')

def polynomial(power=5,random_state=9):
model_P = make_pipeline(PolynomialFeatures(power,include_bias=False),LinearRegression())
model_P.fit(X_train[['OverallQual','GrLivArea','GarageCars','GarageArea']],y_train)
return model_P

polynomial()


# Write your solution here
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22 changes: 19 additions & 3 deletions q04_ridge/build.py
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# %load q04_ridge/build.py
# Default imports
from sklearn.linear_model import Ridge
import pandas as pd
import numpy as np
from sklearn.metrics import mean_squared_error
from greyatomlib.advanced_linear_regression.q01_load_data.build import load_data
np.random.seed(9)

import math
# We have already loaded the data for you
data_set, X_train, X_test, y_train, y_test = load_data('data/house_prices_multivariate.csv')

np.random.seed(9)

def ridge(alpha=0.01):
ridgeReg = Ridge(alpha=alpha , normalize=True,random_state=9)
ridgeReg.fit(X_train,y_train)
ypred_train= ridgeReg.predict(X_train)

#calculate RMSE for training data
rmse_train = math.sqrt(mean_squared_error(y_train, ypred_train))

#calculate Rmse for testing data
ypred_test= ridgeReg.predict(X_test)
rmse_test = math.sqrt(mean_squared_error(y_test, ypred_test))

return rmse_train,rmse_test, ridgeReg


# Write your solution here
ridge(alpha=0.01)


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18 changes: 16 additions & 2 deletions q05_lasso/build.py
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# %load q05_lasso/build.py
# Default imports
from sklearn.linear_model import Lasso
import pandas as pd
import numpy as np
from sklearn.metrics import mean_squared_error
from greyatomlib.advanced_linear_regression.q01_load_data.build import load_data
np.random.seed(9)

# We have already loaded the data for you
data_set, X_train, X_test, y_train, y_test = load_data('data/house_prices_multivariate.csv')


np.random.seed(9)
import math
# Write your solution here
def lasso(alpha=0.01):

model=Lasso(alpha=alpha,normalize=True,random_state=9)
model.fit(X_train,y_train)

ypred_train=model.predict(X_train)
rmse_train = math.sqrt(mean_squared_error(y_train, ypred_train))

ypred_test=model.predict(X_test)
rmse_test = math.sqrt(mean_squared_error(y_test, ypred_test))

return rmse_train,rmse_test


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12 changes: 10 additions & 2 deletions q06_cross_validation/build.py
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# %load q06_cross_validation/build.py
# Default imports
from sklearn.model_selection import cross_val_score
import numpy as np
from greyatomlib.advanced_linear_regression.q01_load_data.build import load_data

np.random.seed(9)
# We have already loaded the data for you
data_set, X_train, X_test, y_train, y_test = load_data('data/house_prices_multivariate.csv')
np.random.seed(9)

# Write your solution here
from sklearn.linear_model import LinearRegression, Lasso, Ridge

def cross_validation(Model, X, y):
scores = cross_val_score(Model, X_train, y_train, scoring='neg_mean_squared_error', cv=5)
mean_error_score = scores.mean()

return mean_error_score

cross_validation(Ridge(0.1), X_train, y_train)


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