词云图可视化python_python 可视化 词云图

#-*- coding: utf-8 -*-

from pandas importread_csvimportnumpy as npfrom sklearn.datasets.base importBunchimport pickle #导入cPickle包并且取一个别名pickle #持久化类

from sklearn.feature_extraction.text importTfidfVectorizerimportjiebaimport operator #排序用

from sklearn importmetricsfrom sklearn.externals importjoblibimportxlwt#导入wordcloud模块和matplotlib模块

importwordcloudimportmatplotlib.pyplot as pltfrom scipy.misc importimread'''读取停用词'''

def_readfile(path):

with open(path,"rb") as fp:

content=fp.read()returncontent'''读取bunch对象'''

def_readbunchobj(path):

with open(path,"rb") as file_obj:

bunch=pickle.load(file_obj)returnbunch'''写入bunch对象'''

def_writebunchobj(path, bunchobj):

with open(path,"wb") as file_obj:

pickle.dump(bunchobj, file_obj)defbuildtestbunch(bunch_path, art_test):

bunch= Bunch(contents=[])#label=[],#=============================================================================#for item1 in testlabel:#bunch.label.append(item1)#=============================================================================

#testContentdatasave=[] #存储所有训练和测试数据的分词

for item2 inart_test:

item2=str(item2)

item2= item2.replace("\r\n", "")

item2= item2.replace(" ", "")

content_seg=jieba.cut(item2)

save2= ''

for item3 incontent_seg:if len(item3) > 1 and item3 != '\r\n':#testContentdatasave.append(item3)

save2 = save2 + "," +item3

bunch.contents.append(save2)

with open(bunch_path,"wb") as file_obj:

pickle.dump(bunch, file_obj)print("构建测试数据文本对象结束！！！")defvector_space(stopword_path, bunch_path, space_path):

stpwrdlst= _readfile(stopword_path).splitlines() #读取停用词

bunch = _readbunchobj(bunch_path) #导入分词后的词向量bunch对象

#构建tf-idf词向量空间对象

tfidfspace = Bunch(label=bunch.label, tdm=[], vocabulary={})#权重矩阵tdm，其中，权重矩阵是一个二维矩阵，tdm[i][j]表示，第j个词(即词典中的序号)在第i个类别中的IF-IDF值

#使用TfidVectorizer初始化向量空间模型

vectorizer = TfidfVectorizer(stop_words=stpwrdlst, sublinear_tf=True, max_df=0.5, min_df=0.0001, use_idf=True,

max_features=15000)#print(vectorizer)

#文本转为词频矩阵，单独保存字典文件

tfidfspace.tdm =vectorizer.fit_transform(bunch.contents)

tfidfspace.vocabulary=vectorizer.vocabulary_#创建词袋的持久化

_writebunchobj(space_path, tfidfspace)print("if-idf词向量空间实例创建成功！！！")deftestvector_space(stopword_path, bunch_path, space_path, train_tfidf_path):

stpwrdlst= _readfile(stopword_path).splitlines() #把停用词变成列表

bunch =_readbunchobj(bunch_path)

tfidfspace= Bunch(tdm=[], vocabulary={})#label=bunch.label,

#导入训练集的TF-IDF词向量空间 ★★

trainbunch =_readbunchobj(train_tfidf_path)

tfidfspace.vocabulary=trainbunch.vocabulary

vectorizer= TfidfVectorizer(stop_words=stpwrdlst, sublinear_tf=True, max_df=0.7, vocabulary=trainbunch.vocabulary,

min_df=0.001)

tfidfspace.tdm=vectorizer.fit_transform(bunch.contents)

_writebunchobj(space_path, tfidfspace)print("if-idf词向量空间实例创建成功！！！")if __name__=="__main__":

Sdata=[]

art=[]'''============================先导入数据=================================='''file_test= 'F:/goverment/text analyse/type_in.csv'dataset=read_csv(file_test)

Sdata=dataset.values[:, :]

Sdata=Sdata.tolist()for line inSdata:

art.append(line[1])#line[1]为文本

print(len(Sdata))'''==========================================================tf-idf对Bar进行文本特征提取============================================================================'''

#导入分词后的词向量bunch对象

test_bunch_path = "F:/goverment/text analyse/trainbunch.bat"test_space_path= "F:/goverment/text analyse/traintfdifspace.dat"stopword_path= "F:/goverment/text analyse/hlt_stop_words.txt"

'''============================================================tf-idf对Sart进行文本特征提取=============================================================================='''buildtestbunch(test_bunch_path, art)

testvector_space(stopword_path, test_bunch_path, test_space_path, test_space_path)

test_set=_readbunchobj(test_space_path)'''测试数据'''

#获取已知 id 找 文本

txtcut=[] #存放所有词

dic={}for i intest_set.vocabulary.keys():

txtcut.append(i)

dic[test_set.vocabulary[i]]=i#print(dic)

#print(test_set.tdm)

#print(test_set.tdm[0])

#print(dir(test_set))

#print(test_set.vocabulary)

#print(dir(test_set.tdm))

#print(Sdata)

#print(nonzero[1])

'''final里放的是不超过15的词'''

#print(Sdata)

final=[]for k in range(len(Sdata)):#遍历每一条文本

nonzero=test_set.tdm[k].nonzero()

ls=[]

ls.append(Sdata[k][0])

num=0for i in range(len(nonzero[1])):

num=num+1b=test_set.tdm[k, nonzero[1][i]]*100 #test_set.tdm[k, nonzero[1][i]]是第k条文本中，第i个权重非零的词权重

a= dic[nonzero[1][i]] +" "+str(round(b,2))+"%"ls.append(a)if num==15:breakfinal.append(ls)'''画词云图'''fig= plt.figure(figsize = (15,15))

cloud= wordcloud.WordCloud(font_path='STXINGKA.TTF',mask=imread('water3.png'),mode='RGBA',

background_color=None).generate(' '.join(txtcut))

img= imread('water3.png')

cloud_colors=wordcloud.ImageColorGenerator(np.array(img))

cloud.recolor(color_func=cloud_colors)

plt.imshow(cloud)

plt.axis('off')

plt.savefig('watercloud3.png',dpi=400)

plt.show()

myexcel=xlwt.Workbook()

sheet= myexcel.add_sheet("sheet1")

si=-1sj=-1

for line infinal:

si=si+1sj=-1

for i inline:

sj=sj+1sheet.write(si,sj,str(i))

myexcel.save("各条分词.xls")#把id存好

myexcel =xlwt.Workbook()

sheet= myexcel.add_sheet("sheet2")

p=0for i intest_set.vocabulary.keys():

sheet.write(p,0,i)print(i)

sheet.write(p,1,str(test_set.vocabulary[i]))

p=p+1myexcel.save("词汇id.xls")