INMFUpdateAlgorithm Interface

Interface to be implemented by all Non-negative Matrix Factorization (NMF) update algorithms used by the NMFact class.

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4

Syntax

public interface INMFUpdateAlgorithm : ICloneable

Public Interface INMFUpdateAlgorithm
	Inherits ICloneable

public interface class INMFUpdateAlgorithm : ICloneable

type INMFUpdateAlgorithm = 
    interface
        interface ICloneable
    end

The INMFUpdateAlgorithm type exposes the following members.

Methods

	Name	Description
	Cost	Returns the value of the cost function for the non-negative factorization of V = WH. The cost function is minimized by the factorization.
	InitialFactors	Provides the initial factors for the iteration process that computes W and H in the non-negative matrix factorization V = WH.
	IterationStep	Updates the factors W and H in the non-negative matrix factorization V = WH.

Top

Remarks

In a non-negative factorization, a non-negative matrix, V, is factored into a product, WH, of two non-negative matrices, W and H. The algorithms pertaining to this interface compute this factorization in an iterative manner, updating the factors W and H at each step with the goal of minimizing some cost function. For example:

Copy

C(V, W, H)  - C(V, W, H) = ||V - WH||

Reference

CenterSpace.NMath.Core Namespace