2010年8月4日

Multidimentional arrays are evil

摘要: I see a lot of noobs get sucked into the vortex that is multidimentional (hereon MD) arrays. MD arrays are a "feature" of C/C++ which allow you to use multiple indeces when looking up things in an arr... 阅读全文

posted @ 2010-08-04 15:59 Lowtec 阅读(605) 评论(0) 推荐(1) 编辑

[转]bootstrps 、bagging与 boosting

摘要: bootstrps bagging boosting这几个概念经常用到,现仔细学习了一下:他们都属于集成学习方法,(如:Bagging,Boosting,Stacking),将训练的学习器集成在一起,原理来源于PAC学习模型(Probably Approximately CorrectK)。Kearns和Valiant指出,在PAC学习模型中,若存在一个多项式级的学习算法来识别一组概念,并且识别正... 阅读全文

posted @ 2010-08-04 10:42 Lowtec 阅读(1706) 评论(0) 推荐(0) 编辑

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