# Package jphase.fit

Provides capabilities for fitting Phase type distribution parameters from data.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  PhaseFitter | This class defines the methods and attributes for any class implementing fitting methods for Phase-Type distributions

- Class Summary
  Class | Description
  --- | ---
  ContPhaseFitter | This class defines the methods and attributes for any class implementing fitting methods for Continuous Phase-Type distributions
  DiscPhaseFitter | This class defines the methods and attributes for any class implementing fitting methods for Discrete Phase-Type distributions
  EMHyperErlangFit | This class implements the Maximum Likelihood method proposed by Thümmler, Buchholz and Telek in "A novel approach for fitting probability distributions to real trace data with the EM algorithm", 2005.
  EMHyperExpoFit | This class implements the Maximum Likelihood method proposed by Khayari, Sadre and Haverkort in "Fitting world-wide web request traces with the EM algorithm", 2003.
  EMPhaseFit | This class implements the Maximum Likelihood method proposed by Asmussen, Nerman and Olsson in "Fitting Phase-type Distributions via the EM algorithm", 1996.
  FitterUtils | This class contains a set of methods for common computations in the PhaseFitter classes
  MLContPhaseFitter | This class defines the behavior for a class that implements a maximum likelihood algorithm for fitting data to a Continuous Phase-Type distribution
  MLDiscPhaseFitter | This class defines the behavior for a class that implements a maximum likelihood algorithm for fitting data to a Discrete Phase-Type distribution
  MomentsACPH2Fit | This class implements the moment-matching method proposed by Telek and Heindl in "Matching Moments for Acyclic discrete and continuous Phase-Type distributions of Second order", 2002.
  MomentsACPHFit | This class implements the moment-matching method proposed by Bobbio, Horvath and Telek in "Matching threee moments with minimal acyclic Phase-Type distributions", 2005.
  MomentsADPH2Fit | This class implements the Matching Moments method proposed by Telek and Heindl in "Matching Moments for Acyclic discrete and continuous Phase-Type distributions of Second order", 2002.
  MomentsContPhaseFitter | This class defines the behavior for a class that implements a moment-matching algorithm for Continuous Phase-Type distributions
  MomentsDiscPhaseFitter | This class defines the behavior for a class that implements a moment-matching algorithm for Discrete Phase-Type distributions
  MomentsECCompleteFit | This class implements the Matching Moments method proposed by Osogami and Harchol in "Closed form solutions for mapping general distributions to quasi-minimal PH distributions", 2005.
  MomentsECPositiveFit | This class implements the Matching Moments method proposed by Osogami and Harchol in "Closed form solutions for mapping general distributions to quasi-minimal PH distributions", 2005.

## Package jphase.fit Description

Provides capabilities for fitting Phase type distribution parameters from data. There exists very diferent algorithms to adjust the parameters of these distributions, which can be divided in two groups: moments based methods and maximum likelihood approaches. This package includes the implementation of some of these algorithms, a framework and a set of utilities for implement new methods. For overviews, tutorials, examples, guides, and tool documentation, please see:

Copa Group WEB page.