604.txt

This complete matlab for neural network

发信人: helloboy (hello), 信区: DataMining
标  题: Re: 对偶性问题
发信站: 南京大学小百合站 (Wed Oct 30 16:15:20 2002), 站内信件

thx.but I only want to find the同构 of -
after that, I can do what I want to.

【 在 fervvac (高远) 的大作中提到: 】
: In the highest level, you want to find a "mapping" between your algebra syste
: m and the existing algebra system on matrix. 
: Basically your system should be homo*** with the matrix one, so that you ca..
: existing algorithms / operation / theorems for the matrix system. To that end,
: you have to define what is the reverse element for any element in your system.
: In fact, - is not a valid operation. a - b should be a + (b -1)), where b-1 is
: the reverse element w.r.t. + (sorry, should be b^-1).
: If you define + to be min, there is no reverse element for any non-zero 
: element. That means your system is totally different from the martrix one
: due to your definition of + operator. That beats the purpose of your approach.
: 【 在 helloboy (hello) 的大作中提到: 】
: : thx.
: : 0 -> MAX(最大的正数）
: : + -> min
: : So
: : a+b -> min (a,b)
: : a+0 -> min( a, MAX) =a
: : 这些在影射后都是对的。
: : So I want to ask
: : a - b -> ?(a,b)
: (以下引言省略 ... ...)

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