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Radial-basis-function

于 2014-07-03 发布 文件大小:1580KB
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  径向基函数是一个取值仅仅依赖于离原点距离的实值函数,也就是Φ(x)=Φ(‖x‖),或者还可以是到任意一点c的距离,c点称为中心点,也就是 Φ(x,c)=Φ(‖x-c‖)。任意一个满足Φ(x)=Φ(‖x‖)特性的函数Φ都叫做径向量函数,标准的一般使用欧氏距离,尽管其他距离函数也是可以的。一些径向函数代表性的用到近似给定的函数,这种近似可以被解释成一个简单的神经网络,径向基函数在支持向量机中也被用做核函数。(Radial basis function depends only on the value of a real-valued function of the distance from the origin, i.e. Φ (x) = Φ (x ‖ ‖) or may also be the distance to any point c, c is called the center point , i.e. Φ (x, c) = Φ (xc ‖ ‖). Satisfy any one of Φ (x) = Φ (x ‖ ‖) characteristic functions are called radial vector function Φ standard Euclidean distance is generally used, although other distance functions are also possible. Some typical uses radial function approximation given function, this approximation can be interpreted as a simple neural network, RBF in support vector machines have also been used to make nuclear functions.)

文件列表:

Radial basis function,RBF
..........................\Radial Basis Function Net.m,1311,2014-03-13
..........................\径向基.docx,1658427,2014-03-13

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