冗余特征如何影响特征选择的稳定性？

Question

冗余特征如何影响特征选择的稳定性？希望能给详细解答一下两者的关系。
还有处理冗余特征的方法是不是直接从特征选择结果里把它删除？

Answer 1

特征选择就是一个寻找相关特征和冗余特征的过程，具体怎么影响和方法可以看下这个

基于冗余分析的特征选择算法 http://html.rhhz.net/buptjournal/html/20170106.htm#:~:text=%E7%89%B9%E5%BE%81%E9%80%89%E6%8B%A9%E5%B0%B1%E6%98%AF%E4%B8%80%E4%B8%AA%E5%AF%BB%E6%89%BE%E7%9B%B8%E5%85%B3%E7%89%B9%E5%BE%81%E5%92%8C%E5%86%97%E4%BD%99%E7%89%B9%E5%BE%81%E7%9A%84%E8%BF%87%E7%A8%8B%EF%BC%8C%E8%99%BD%E7%84%B6%E5%B7%B2%E6%9C%89%E5%BE%88%E5%A4%9A%E7%A0%94%E7%A9%B6%E6%88%90%E6%9E%9C%E7%A1%AE%E5%AE%9A%E4%BA%86%E5%86%97%E4%BD%99%E7%89%B9%E5%BE%81%E7%9A%84%E5%AD%98%E5%9C%A8%EF%BC%8C%E5%B9%B6%E9%AA%8C%E8%AF%81%E4%BA%86%E5%AE%83%E7%9A%84%E4%BD%9C%E7%94%A8%20%5B,2%5D%20%EF%BC%8C%E4%BD%86%E5%B0%91%E6%9C%89%E4%BA%BA%E5%AF%B92%E7%A7%8D%E7%9B%B8%E5%85%B3%E6%80%A7%E5%81%9A%E5%87%BA%E5%88%86%E6%9E%90%EF%BC%8C%E8%BF%9B%E8%80%8C%E4%BB%8E%E7%9B%B8%E5%85%B3%E7%89%B9%E5%BE%81%E4%B8%AD%E6%9C%89%E6%95%88%E7%9A%84%E5%88%86%E7%A6%BB%E5%87%BA%E5%86%97%E4%BD%99%E7%89%B9%E5%BE%81.