SparseSigmoid Class

Note: This API is now obsolete.

Sparse Sigmoid Kernel.

Inheritance Hierarchy

SystemObject
  Accord.Statistics.KernelsKernelBaseDouble
    Accord.Statistics.KernelsKernelBase
      Accord.Statistics.Kernels.SparseSparseSigmoid

Namespace: Accord.Statistics.Kernels.Sparse
Assembly: Accord.Statistics (in Accord.Statistics.dll) Version: 3.8.0

Syntax

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[SerializableAttribute]
[ObsoleteAttribute("Please use the Sigmoid kernel with Sparse<double> instead.")]
public sealed class SparseSigmoid : KernelBase, 
	IKernel, IKernel<double[]>

<SerializableAttribute>
<ObsoleteAttribute("Please use the Sigmoid kernel with Sparse<double> instead.")>
Public NotInheritable Class SparseSigmoid
	Inherits KernelBase
	Implements IKernel, IKernel(Of Double())

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The SparseSigmoid type exposes the following members.

Constructors

	Name	Description
	SparseSigmoid	Constructs a Sparse Sigmoid kernel.
	SparseSigmoid(Double, Double)	Constructs a Sparse Sigmoid kernel.

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Properties

	Name	Description
	Constant	Gets or sets the kernel's constant term.
	Gamma	Gets or sets the kernel's gamma parameter.

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Methods

	Name	Description
	Distance	Computes the squared distance in feature space between two points given in input space. (Inherited from KernelBaseTInput.)
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Function	Sigmoid kernel function. (Overrides KernelBaseTInputFunction(TInput, TInput).)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Extension Methods

	Name	Description
	Distance	Computes the kernel distance for a kernel function even if it doesn't implement the IDistance interface. Can be used to check the proper implementation of the distance function. (Defined by Tools.)
	HasMethod	Checks whether an object implements a method with the given name. (Defined by ExtensionMethods.)
	IsEqual	Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices. (Defined by Matrix.)
	To(Type)	Overloaded. Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime. (Defined by ExtensionMethods.)
	ToT	Overloaded. Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime. (Defined by ExtensionMethods.)

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Remarks

Sigmoid kernels are not positive definite and therefore do not induce a reproducing kernel Hilbert space. However, they have been successfully used in practice (Schölkopf and Smola, 2002).

Reference

Accord.Statistics.Kernels.Sparse Namespace