MATLAB中的特征选择方法? [英] Feature Selection methods in MATLAB?
问题描述
我正在尝试使用MATLAB中的SVM对文本进行一些分类，并且真的想知道MATLAB是否具有用于特征选择的任何方法(Chi Sq.，MI，....)，因为我想尝试各种方法.方法并保持最佳方法，我没有时间实施所有这些方法.这就是为什么我要在MATLAB中寻找这样的方法.有人知道吗?
I am trying to do some text classification with SVMs in MATLAB and really would to know if MATLAB has any methods for feature selection(Chi Sq.,MI,....), For the reason that I wan to try various methods and keeping the best method, I don't have time to implement all of them. That's why I am looking for such methods in MATLAB.Does any one know?
推荐答案
MATLAB还有其他用于分类的实用程序，例如集群分析，随机森林等.
MATLAB has other utilities for classification like cluster analysis, random forests, etc.
如果您没有svmtrain所需的工具箱，我建议 LIBSVM .它是免费的，我已经使用了很多，而且效果很好.
If you don't have the required toolbox for svmtrain, I recommend LIBSVM. It's free and I've used it a lot with good results.
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