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1.词袋模型

(BOW,bag of words)
用词频矩阵作为每个样本的特征
Are you curious about tokenization ? Let’s see how it works! we need to analyze a couple of sentences with puntuations to see it in action.’
每个单词出现的次数

import nltk.tokenize as tk 
import sklearn.feature_extraction.text as ft 
#ft进行特征抓取
doc = 'the brown dog is running. The black dog is in the black room. Running in the room is forbidden.'
print(doc)
print('-'*

本文标签: 自然语言模型文本NLP