python使用Word2Vec进行情感分析解析

from sklearn.model_selection import train_test_split
import numpy as np
import pandas as pd
import jieba as jb
from sklearn.externals import joblib
from sklearn.svm import SVC
from gensim.models.word2vec import Word2Vec

 neg =pd.read_excel("data/neg.xls",header=None,index=None)
 pos =pd.read_excel("data/pos.xls",header=None,index=None)
 # 这是两类数据都是x值
 pos['words'] = pos[0].apply(lambda x:list(jb.cut(x)))
 neg['words'] = neg[0].apply(lambda x:list(jb.cut(x)))
 #需要y值 0 代表neg 1代表是pos
 y = np.concatenate((np.ones(len(pos)),np.zeros(len(neg))))
 X = np.concatenate((pos['words'],neg['words']))

 X_train,X_test,y_train,y_test = train_test_split(X,y,test_size=0.2,random_state=3)
 #保存数据
 np.save("data/y_train.npy",y_train)
 np.save("data/y_test.npy",y_test)

#初始化模型和词表
 wv = Word2Vec(size=300,min_count=10)
 wv.build_vocab(x_train)
 # 训练并建模
 wv.train(x_train,total_examples=1, epochs=1)
 #获取train_vecs
 train_vecs = np.concatenate([ build_vector(z,300,wv) for z in x_train])
 #保存处理后的词向量
 np.save('data/train_vecs.npy',train_vecs)
 #保存模型
 wv.save("data/model3.pkl")
 
 wv.train(x_test,total_examples=1, epochs=1)
 test_vecs = np.concatenate([build_vector(z,300,wv) for z in x_test])
 np.save('data/test_vecs.npy',test_vecs)
 

def build_vector(text,size,wv):
 #创建一个指定大小的数据空间
 vec = np.zeros(size).reshape((1,size))
 #count是统计有多少词向量
 count = 0
 #循环所有的词向量进行求和
 for w in text:
 try:
 vec += wv[w].reshape((1,size))
 count +=1
 except:
 continue
 
 #循环完成后求均值
 if count!=0:
 vec/=count
 return vec

 #创建SVC模型
 cls = SVC(kernel="rbf",verbose=True)
 #训练模型
 cls.fit(train_vecs,y_train)
 #保存模型
 joblib.dump(cls,"data/svcmodel.pkl")
 #输出评分
 print(cls.score(test_vecs,y_test))

from tkinter import *
import numpy as np
import jieba as jb
import joblib
from gensim.models.word2vec import Word2Vec

class core():
 def __init__(self,str):
 self.string=str

 def build_vector(self,text,size,wv):
 #创建一个指定大小的数据空间
 vec = np.zeros(size).reshape((1,size))
 #count是统计有多少词向量
 count = 0
 #循环所有的词向量进行求和
 for w in text:
 try:
 vec += wv[w].reshape((1,size))
 count +=1
 except:
 continue
 #循环完成后求均值
 if count!=0:
 vec/=count
 return vec
 def get_predict_vecs(self,words):
 # 加载模型
 wv = Word2Vec.load("data/model3.pkl")
 #将新的词转换为向量
 train_vecs = self.build_vector(words,300,wv)
 return train_vecs
 def svm_predict(self,string):
 # 对语句进行分词
 words = jb.cut(string)
 # 将分词结果转换为词向量
 word_vecs = self.get_predict_vecs(words)
 #加载模型
 cls = joblib.load("data/svcmodel.pkl")
 #预测得到结果
 result = cls.predict(word_vecs)
 #输出结果
 if result[0]==1:
 return "好感"
 else:
 return "反感"
 def main(self):
 s=self.svm_predict(self.string)
 return s

root=Tk()
root.title("情感分析")
sw = root.winfo_screenwidth()
#得到屏幕宽度
sh = root.winfo_screenheight()
#得到屏幕高度
ww = 500
wh = 300
x = (sw-ww) / 2
y = (sh-wh) / 2-50
root.geometry("%dx%d+%d+%d" %(ww,wh,x,y))
# root.iconbitmap('tb.ico')

lb2=Label(root,text="输入内容，按回车键分析")
lb2.place(relx=0, rely=0.05)

txt = Text(root,font=("宋体",20))
txt.place(rely=0.7, relheight=0.3,relwidth=1)

inp1 = Text(root, height=15, width=65,font=("宋体",18))
inp1.place(relx=0, rely=0.2, relwidth=1, relheight=0.4)

def run1():
 txt.delete("0.0",END)
 a = inp1.get('0.0',(END))
 p=core(a)
 s=p.main()
 print(s)
 txt.insert(END, s) # 追加显示运算结果

def button1(event):
 btn1 = Button(root, text='分析', font=("",12),command=run1) #鼠标响应
 btn1.place(relx=0.35, rely=0.6, relwidth=0.15, relheight=0.1)
 # inp1.bind("<Return>",run2) #键盘响应

button1(1)
root.mainloop()