Package jline.lib.m3a

Class M3aUtils

java.lang.Object

jline.lib.m3a.M3aUtils

public final class M3aUtils
extends Object

Utility functions for M3A (Markovian Arrival Process with 3-moment Approximation) compression.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	M3aUtils.ConstraintFunction	Functional interface for constraint functions used by COBYLA.
static interface	M3aUtils.ObjectiveFunction	Functional interface for objective functions used by COBYLA.

Method Summary

Modifier and Type	Method	Description
static Double[]	computeAutocorrelation(MatrixCell MMAP, int maxLag)	Computes the autocorrelation function of an MMAP up to the specified lag.
static double	computeCoeffVar(MatrixCell MMAP)	Computes the coefficient of variation of an MMAP.
static double	computeIDC(MatrixCell MMAP, double timeWindow)	Computes the index of dispersion for counts (IDC) of an MMAP.
static double	computeKLDivergence(MatrixCell MMAP1, MatrixCell MMAP2)
static double	computeKLDivergence(MatrixCell MMAP1, MatrixCell MMAP2, int numSamples)
static double	computeKLDivergence(MatrixCell MMAP1, MatrixCell MMAP2, int numSamples, int seed)	Computes the Kullback-Leibler divergence between two MMAPs.
static Double[]	computeMoments(MatrixCell MMAP, int n)	Computes the first n moments of an MMAP.
static double	computeSpectralGap(MatrixCell MMAP)	Computes the spectral gap of an MMAP generator matrix.
static Double[]	optimizeParameters(Double[] initialParams, M3aUtils.ObjectiveFunction objectiveFunction, M3aUtils.ConstraintFunction[] constraints)
static Double[]	optimizeParameters(Double[] initialParams, M3aUtils.ObjectiveFunction objectiveFunction, M3aUtils.ConstraintFunction[] constraints, double tolerance)	Optimizes MMAP parameters using COBYLA optimization.
static boolean	validateMMAP(MatrixCell MMAP)	Validates that a matrix represents a valid MMAP.

Methods inherited from class java.lang.Object

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

Method Details

computeAutocorrelation

public static Double[] computeAutocorrelation(MatrixCell MMAP,
 int maxLag)

Computes the autocorrelation function of an MMAP up to the specified lag.

computeIDC

public static double computeIDC(MatrixCell MMAP,
 double timeWindow)

Computes the index of dispersion for counts (IDC) of an MMAP.

computeCoeffVar

public static double computeCoeffVar(MatrixCell MMAP)

Computes the coefficient of variation of an MMAP.

computeMoments

public static Double[] computeMoments(MatrixCell MMAP,
 int n)

Computes the first n moments of an MMAP.

computeSpectralGap

public static double computeSpectralGap(MatrixCell MMAP)

Computes the spectral gap of an MMAP generator matrix.

optimizeParameters

public static Double[] optimizeParameters(Double[] initialParams,
 M3aUtils.ObjectiveFunction objectiveFunction,
 M3aUtils.ConstraintFunction[] constraints)

optimizeParameters

public static Double[] optimizeParameters(Double[] initialParams,
 M3aUtils.ObjectiveFunction objectiveFunction,
 M3aUtils.ConstraintFunction[] constraints,
 double tolerance)

Optimizes MMAP parameters using COBYLA optimization.

computeKLDivergence

public static double computeKLDivergence(MatrixCell MMAP1,
 MatrixCell MMAP2)

computeKLDivergence

public static double computeKLDivergence(MatrixCell MMAP1,
 MatrixCell MMAP2,
 int numSamples)

computeKLDivergence

public static double computeKLDivergence(MatrixCell MMAP1,
 MatrixCell MMAP2,
 int numSamples,
 int seed)

Computes the Kullback-Leibler divergence between two MMAPs.

validateMMAP

public static boolean validateMMAP(MatrixCell MMAP)

Validates that a matrix represents a valid MMAP.