thank you very much.

i recommend the book written by Ian Witten and Eibe Frank. It has already translated into Chinese.
http://www.cmpbook.com/stackroom.php?id=6144
It is quite detailed in algorithm application, much better than the help documents on the Weka's website

Weka is a free software, you can find the java codes on its homepage
http://www.cs.waikato.ac.nz/ml/weka/
there is another open-source VB version of  Weka with the same GUI
http://sourceforge.net/projects/vbweka/

Hope this help

这个是帮助？ 类似MSDN？

很感谢楼主哈~