使用Keras构建BPNN模型用于分类任务

(一)BPNN(二分类)

使用软件:Anaconda

Tip: 输出层采用Sigmoid函数

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
from sklearn import datasets,preprocessing
from sklearn.model_selection import train_test_split
from keras.models import Sequential
from keras.layers import Dense,Activation

import warnings
warnings.filterwarnings('ignore')

#读取数据
dataset = datasets.load_breast_cancer()
X,y = dataset.data,dataset.target

**x = preprocessing.StandardScaler().fit_transform(X)
x_train,x_test,y_train,y_test = train_test_split(x,y,test_size=0.2,random_state=