Package org.dulab.javanmf.updaterules

Class MUpdateRule

java.lang.Object
org.dulab.javanmf.updaterules.UpdateRule
org.dulab.javanmf.updaterules.RegularizationUpdateRule
org.dulab.javanmf.updaterules.MUpdateRule
public class MUpdateRule
extends RegularizationUpdateRule
Performs multiplicative update for the euclidean distance with regularization
Author:
Du-Lab Team dulab.binf@gmail.com

  • Field Summary

    Fields inherited from class org.dulab.javanmf.updaterules.RegularizationUpdateRule

    lambda, mu

    Fields inherited from class org.dulab.javanmf.updaterules.UpdateRule

    measure

  • Constructor Summary

    Constructors 
    Constructor Description
    MUpdateRule​(double lambda, double mu)
    Creates an instance of MUpdateRule with given regularization coefficients

  • Method Summary

    Modifier and Type Method Description
    double update​(org.ejml.data.DMatrixRMaj x, org.ejml.data.DMatrixRMaj w, org.ejml.data.DMatrixRMaj h)
    Updates matrix H to minimize distance between X and WH

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • MUpdateRule

      public MUpdateRule​(double lambda, double mu)
      Creates an instance of MUpdateRule with given regularization coefficients
      Parameters:
      lambda - l1-regularization coefficient
      mu - l2-regularization coefficient

  • Method Details

    • update

      public double update​(@Nonnull org.ejml.data.DMatrixRMaj x, @Nonnull org.ejml.data.DMatrixRMaj w, @Nonnull org.ejml.data.DMatrixRMaj h)
      Description copied from class: UpdateRule
      Updates matrix H to minimize distance between X and WH
      Specified by:
      update in class UpdateRule
      Parameters:
      x - matrix of shape [Npoints, Nvectors]
      w - matrix of shape [Npoints, Ncomponents]
      h - matrix of shape [Ncomponents, Nvectors]
      Returns:
      increment of |H|