Package smile.math.kernel
Class GaussianKernel
- java.lang.Object
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- smile.math.kernel.GaussianKernel
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- All Implemented Interfaces:
java.io.Serializable
,MercerKernel<double[]>
public class GaussianKernel extends java.lang.Object implements MercerKernel<double[]>
The Gaussian Mercer Kernel. k(u, v) = e-||u-v||2 / (2 * σ2), where σ > 0 is the scale parameter of the kernel.The Gaussian kernel is a good choice for a great deal of applications, although sometimes it is remarked as being overused.
- Author:
- Haifeng Li
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description GaussianKernel(double sigma)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description double
k(double[] x, double[] y)
Kernel function.java.lang.String
toString()
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Method Detail
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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k
public double k(double[] x, double[] y)
Description copied from interface:MercerKernel
Kernel function.- Specified by:
k
in interfaceMercerKernel<double[]>
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