Commit Graph

12 Commits

Author SHA1 Message Date
joseph.lizier 030a172d82 Patched covariance calculation, added utils, patched analytic computation of distribution of MI with linear Gaussians, altered comments 2013-01-08 05:37:48 +00:00
joseph.lizier 731c17def1 Edited comments on MatrixUtils to talk about java-octave 2D matrix conversion issues 2012-10-25 14:08:27 +00:00
joseph.lizier 6e6a21f54b Added utility to convert a 1D matrix to a 2D container in MatrixUtils.
Comment changes to other classes.
2012-10-25 00:47:59 +00:00
joseph.lizier cda8689afb Made sure all discrete calculators use log_2 to make answers in bits (some were still using log of base).
Merged usual and debug methods for computing average MI in discrete calculator

Added setDebug to super InfoMeasureCalculator

Cleaned up header of InfoMeasureCalculator

Adding TODO comments for Kraskov calculators

Bug fix on MutualInfoCalculatorMultiVariateWithDiscreteKraskov - we weren't normalising incoming observations for computing local MI properly, this is fixed now.
2012-09-05 06:23:48 +00:00
joseph.lizier 07ce2d0e24 Added determinant computation via Cholesky decomposition for symmetric matrices (more efficient)
Utilising determinant computation via Cholesky decomposition in Gaussian entropy and MI calculators

Allowed ChannelCalculatorCommon.finaliseObservations() to throw Exceptions so that child classes can do so (in particular Gaussian MI needs to do so if it finds the variables are linearly dependent)
2012-08-17 07:28:50 +00:00
joseph.lizier b978034f18 Added implementation for local entropy in EntropyCalculatorMultiVariateGaussian + bug fixes
Added MutualInfoCalculatorMultiVariateWithDiscreteGaussian

Added many javadoc comments
2012-08-16 05:40:29 +00:00
joseph.lizier d19045014a Adding extra matrix utility functions to allow multivariate normal PDF to be calculated (including Cholesky decomposition, inversion of symmetric matrices), extra matrix multiplcation routines, etc.
Added routines in MathsUtils for uni- and multi-variate normal PDF and CDF (univariate only).

Implemented local MI for Gaussian MI. Pulled many routines into the MutualInfoMultiVariateCommon
2012-08-06 07:44:23 +00:00
joseph.lizier 9a86ee8152 Added classes for joint entropy and multivariate mutual information calculation with gaussian assumption.
Restructured MeasurementDistribution to have child classes EmpiricalMeasurementDistribution and AnalyticMeasurementDistribution - this resulted in many classes being altered.

Added ChiSquare distribution methods to MathsUtils.

Added more covariance methods to MatrixUtils.
2012-08-01 07:26:18 +00:00
joseph.lizier 6af2a5b0a1 Added more covariance methods to MatrixUtils.
Changed method signatures for initialisers for multivariate channel calculator (transfer entropy and mutual information) classes to have source dimensions before destination dimensions, in line with the addObservations (etc.) methods.
2012-07-23 07:29:52 +00:00
joseph.lizier 4bb762c119 Added implementation of differential entropy for Gaussian variables. 2012-07-20 12:33:23 +00:00
joseph.lizier 054044ccf6 Added doubleToIntArray() methods to allow Octave users to convert native double arrays to int arrays when required. 2012-07-18 05:22:12 +00:00
joseph.lizier 56d868ca00 Uploading whole of Java Information Dynamics toolkit for the first time. 2012-05-08 00:18:37 +00:00