首页用matlab处理TF-IDF文本特征提取代码

用matlab处理TF-IDF文本特征提取代码

时间: 2023-11-30 08:02:49 浏览: 94

以下是用MATLAB处理TF-IDF文本特征提取的代码： 1. 加载文本数据集 ```matlab % Load text data set docSet = {'This is the first document.',... 'This document is the second document.',... 'And this is the third one.',... 'Is this the first document?'}; ``` 2. 文本预处理 ```matlab % Tokenize documents documents = tokenizedDocument(docSet); % Remove stop words documents = removeStopWords(documents); % Stem words documents = normalizeWords(documents,'Style','stem'); ``` 3. 计算tf-idf权重 ```matlab % Create a bag-of-words model bag = bagOfWords(documents); % Calculate TF-IDF weights tfidf = tfidf(bag); ``` 4. 查看tf-idf权重 ```matlab % View the TF-IDF weights tfidfTable = tfidf2table(tfidf); disp(tfidfTable); ``` 完整代码如下： ```matlab % Load text data set docSet = {'This is the first document.',... 'This document is the second document.',... 'And this is the third one.',... 'Is this the first document?'}; % Tokenize documents documents = tokenizedDocument(docSet); % Remove stop words documents = removeStopWords(documents); % Stem words documents = normalizeWords(documents,'Style','stem'); % Create a bag-of-words model bag = bagOfWords(documents); % Calculate TF-IDF weights tfidf = tfidf(bag); % View the TF-IDF weights tfidfTable = tfidf2table(tfidf); disp(tfidfTable); ``` 以上就是用MATLAB处理TF-IDF文本特征提取的代码，希望能够帮助到你！

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