377.txt

来自「This complete matlab for neural network」· 文本 代码 · 共 21 行

发信人: fervvac (高远), 信区: DataMining
标  题: Re: what's  mean of overfitting? 
发信站: 南京大学小百合站 (Mon Jan 14 18:02:01 2002), 站内信件

The sentence is self-explanatory.

A simple example is as follows. Given n points on 2-D space, do curve fitting.
The optimal solution (i.e., no error) is a n+1 polynomial function. However,
as it is easily know, such high order functions will be very irrgular. 
Intuitively, that will not be the real case.

【 在 pchina (东风) 的大作中提到: 】
: 请教，看关于神经挖掘时有这么一段话，其中的overfit应译成什么呢，那么大侠能告..
: 
: overfitting happens when a model works very well on its trainning set,but has 
: poor performance on new data.


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