b-23-derin_ogrenme.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sun Jul  8 10:03:40 2018

@author: regkr
"""

#1. kutuphaneler
import numpy as np
import matplotlib.pyplot as plt
import pandas as pd

#2. Veri Onisleme

#2.1. Veri Yukleme
veriler = pd.read_csv('Churn_Modelling.csv')
#pd.read_csv("veriler.csv")

#veri on isleme
X= veriler.iloc[:,3:13].values
Y = veriler.iloc[:,13].values

#encoder:  Kategorik -> Numeric
from sklearn.preprocessing import LabelEncoder

le = LabelEncoder()
X[:,1] = le.fit_transform(X[:,1])

le2 = LabelEncoder()
X[:,2] = le2.fit_transform(X[:,2])

from sklearn.preprocessing import OneHotEncoder
ohe = OneHotEncoder(categorical_features=[1])
X=ohe.fit_transform(X).toarray()
X = X[:,1:]


#verilerin egitim ve test icin bolunmesi
from sklearn.model_selection import train_test_split
x_train, x_test,y_train,y_test = train_test_split(X,Y,test_size=0.33, random_state=0)

#verilerin olceklenmesi
from sklearn.preprocessing import StandardScaler

sc = StandardScaler()
X_train = sc.fit_transform(x_train)
X_test = sc.fit_transform(x_test)

import keras
from keras.models import Sequential
from keras.layers import Dense

classifier = Sequential()
classifier.add(Dense(6, kernel_initializer="uniform", activation="relu",input_dim=11))
classifier.add(Dense(6, kernel_initializer="uniform", activation="relu"))
classifier.add(Dense(1, kernel_initializer="uniform", activation="sigmoid"))

classifier.compile(optimizer="adam", loss = "binary_crossentropy", metrics=["accuracy"])

classifier.fit(X_train,y_train, epochs=50)
y_pred = classifier.predict(X_test)

y_pred = (y_pred > 0.5)

from sklearn.metrics import confusion_matrix

cm = confusion_matrix(y_pred,y_test)
print (cm)