qq_33837905的博客

import pandas as pdimport osos.chdir(r'C:\Users\lujing\Desktop\NLP两周实践')train=pd.read_csv('train_set.csv',sep='\t')train.shape(200000, 2)train.head(10) label text 0 2 2967 6758 339 202

第一种表示方式 Count 次数from sklearn.feature_extraction.text import CountVectorizercorpus = [ 'This is the first document . ', 'this document is the second document.', 'the last one']vectorizer = CountVectorizer()vectorizer.fit_transform(corpus)

import pandas as pdimport osos.chdir(r'C:\Users\lujing\Desktop\NLP两周实践')train=pd.read_csv('train_set.csv',sep='\t')train.shape(200000, 2)train.head(10) label text 0 2 2967 6758 339 202