*JIDT* provides a stand-alone, open-source code Java implementation (also usable in [Matlab, Octave](../../wiki/UseInOctaveMatlab), [Python](../../wiki/UseInPython), [R](../../wiki/UseInR), [Julia](../../wiki/UseInJulia) and [Clojure](../../wiki/UseInClojure)) of information-theoretic measures of distributed computation in complex systems: i.e. information storage, transfer and modification.
* principally for the measures **transfer entropy**, **mutual information**, and their conditional variants, as well as **active information storage**, entropy, etc;
* It ships with a **GUI application** -- the [AutoAnalyser](../../wiki/AutoAnalyser), see picture below -- to facilitate point-and-click analysis, as well as code template generation for more complex analysis.
* We provide **short video lectures** and corresponding slides in a (beta) [Course](../../wiki/Course) on how to understand using information-theoretic tools to analyse complex systems, and to implement such analysis with JIDT.
1._Quick start_: take a `git clone` (then build via [AntScripts](../../wiki/AntScripts)) OR download the latest [v1.5 full distribution](http://lizier.me/joseph/software/jidt/download.php?file=infodynamics-dist-1.5.zip) (suitable for all platforms) and see the readme.txt file therein.
1. [Documentation](../../wiki/Documentation) including: the paper describing JIDT at [arXiv:1408.3270](http://arxiv.org/abs/1408.3270) (distributed with the toolkit), a (beta) [Course](../../wiki/Course) including short video lectures and a shorter [Tutorial](../../wiki/Tutorial), and [Javadocs (v1.5 here)](http://lizier.me/joseph/software/jidt/javadocs/v1.5/);
1. [Demos](../../wiki/Demos) are included with the full distribution, including a [GUI app](../../wiki/AutoAnalyser) for automatic analysis and code generation (see picture below), [simple java demos](../../wiki/SimpleJavaExamples) and [cellular automata (CA) demos](../../wiki/CellularAutomataDemos).
1. These Java tools can easily be used in [Matlab/Octave](../../wiki/OctaveMatlabExamples), [Python](../../wiki/PythonExamples), [R](../../wiki/R_Examples), [Julia](../../wiki/JuliaExamples) and [Clojure](../../wiki/Clojure_Examples)! (click on each language here for examples)
Joseph T. Lizier, "JIDT: An information-theoretic toolkit for studying the dynamics of complex systems", _Frontiers in Robotics and AI_ 1:11, 2014; doi:[10.3389/frobt.2014.00011](http://dx.doi.org/10.3389/frobt.2014.00011) (pre-print: [arXiv:1408.3270](http://arxiv.org/abs/1408.3270))
_26/11/2018_ - New jar and full distribution files available for **release v1.5**; Changes for v1.5 include:
Added GPU (cuda) capability for KSG Conditional Mutual Information calculator (proper documentation to come), brief [wiki page](../../wiki/GPU) and unit tests included;
Added auto-embedding for TE/AIS with multivariate KSG, and univariate and multivariate Gaussian estimator (plus unit tests), for Ragwitz criteria and Maximum bias-corrected AIS, and also added Maximum bias corrected AIS and TE to handle source embedding as well;
Kozachenko entropy estimator adds noise to data by default;
Added bias-correction property to Gaussian and Kernel estimators for MI and conditional MI, including with surrogates (only option for kernel);
Enabled use of different bases for different variables in MI discrete estimator;
All new above features enabled in AutoAnalyser;
Added drop-down menus for parameters in AutoAnalyser;
Included long-form lecture slides in course folder;
_26/11/2017_ - New jar and full distribution files available for **release v1.4**; Changes for v1.4 include:
Major expansion of functionality for AutoAnalysers: adding Launcher applet and capability to double click jar to launch, added Entropy, CMI, CTE and AIS AutoAnalysers, also added binned estimator type, added all variables/pairs analysis, added statistical significance analysis, and ensured functionality of generated Python code with Python3;
Added GPU (cuda) capability for KSG Mutual Information calculator (proper documentation and wiki page to come), including unit tests;
Added fast neighbour search implementations for mixed discrete-continuous KSG MI estimators;
Expanded Gaussian estimator for multi-information (integration);
_17/12/2016_ - New book out from J. Lizier et al., ["An Introduction to Transfer Entropy: Information Flow in Complex Systems"](http://bit.ly/te-book-2016) published by Springer, which contains various examples using JIDT (distributed in our releases)
_21/10/2016_ - New jar and full distribution files available for **release v1.3.1**; Changes for v1.3.1 include:
Major update to TransferEntropyCalculatorDiscrete so as to implement arbitrary source and dest embeddings and source-dest delay;
Conditional TE calculators (continuous) handle empty conditional variables;
Added new auto-embedding method for AIS and TE which maximises bias corrected AIS;
Added getNumSeparateObservations() method to TE calculators to make reconstructing/separating local values easier after multiple addObservations() calls;
Fixed kernel estimator classes to return proper densities, not probabilities;
Bug fix in mixed discrete-continuous MI (Kraskov) implementation;
Added simple interface for adding joint observations for MultiInfoCalculatorDiscrete
Including compiled class files for the AutoAnalyser demo in distribution;
Updated Python demo 1 to show use of numpy arrays with ints;
Added Python demo 7 and 9 for TE Kraskov with ensemble method and auto-embedding respectively;
Added Matlab/Octave example 10 for conditional TE via Kraskov (KSG) algorithm;
Added utilities to prepare for enhancing surrogate calculations with fast nearest neighbour search;
Implemented Fast Nearest Neighbour Search for Kraskov-Stögbauer-Grassberger (KSG) estimators for MI, conditional MI, TE, conditional TE, AIS, Predictive info, and multi-information. This includes a general (multivariate) k-d tree implementation;
Added multi-threading (using all available processors by default) for the KSG estimators -- code contributed by Ipek Özdemir;
Added Predictive information / Excess entropy implementations for KSG, kernel and Gaussian estimators;
Added R, Julia, and Clojure demos;
Added Windows batch files for the Simple Java Demos;
Added property for adding a small amount of noise to data in all KSG estimators;
_15/8/2014_ JIDT paper finalised and uploaded to the website and [arXiv:1408.3270](http://arxiv.org/abs/1408.3270)
_14/8/2014_ - New jar and full distribution files available for our **first official release, v1.0**; Changes for v1.0 include: Added the draft of the paper on the toolkit to the release;
Switched source->destination arguments for discrete TE calculators to be with source first in line with continuous calculators;
Renamed all discrete calculators to have Discrete suffix -- TE and conditional TE calculators also renamed to remove "Apparent" prefix and change "Complete" to "Conditional";
Kraskov estimators now using 4 nearest neighbours by default;
Unit test for Gaussian TE against ChaLearn Granger causality measurement;
Added Schreiber TE demos; Interregional transfer demos; documentation for Interaction lag demos; added examples 7 and 8 to Simple Java demos;
Added property to add noise to data for Kraskov MI;
Added derivation of Apache Commons Math code for chi square distribution, and included relevant notices in our release;
Inserted translation class for arrays between Octave and Java;
Added analytic statistical significance calculation to Gaussian calculators and discrete TE;
Corrected Kraskov algorithm 2 for conditional MI to follow equation in Wibral et al. 2014.
_20/4/2014_ - New jar and full distribution files available for v0.2.0; Moved downloads to http://lizier.me/joseph/ since google code has stopped the download facility here :(. Changes for v0.2.0 include: Rearchitected (most) Transfer Entropy and Multivariate TE calculators to use an underlying conditional mutual information calculator, and have arbitrary embedding delay, source-dest delay; this includes moving Kraskov-Grassberger Transfer Entropy calculator to use a single conditional mutual information estimator instead of two mutual information estimators; Rearchitected (most) Active Information Storage calculators to use an underlying mutual information calculator; Added Conditional Transfer Entropy calculators using underlying conditional mutual information calculators; Moved mixed discrete-continuous calculators to a new "mixed" package; bug fixes.
_11/9/2013_ - New jar and full distribution files available for v0.1.4; added scripts to generate CA figures for 2013 book chapters; added general Java demo code; added Python demo code; made Octave/Matlab demos and CA demos properly compatible for Matlab; added extra Octave/Matlab general demos; added more unit tests for MI and conditional MI calculators, including against results from Wibral's TRENTOOL; bug fixes.
_11/9/2013_ - New CA demo scripts for several review book chapters we're preparing in 2013 have been uploaded - see [CellularAutomataDemos](../../wiki/CellularAutomataDemos).
_13/01/2013_ - New jar and full distribution files available for v0.1.3; existing Octave/Matlab demo code made compatible with Matlab; several bug fixes, including using max norm by default in Kraskov calculator (instead of requiring this to be set explicitly); more unit tests (including against results from Kraskov's own MI implementation)
_19/11/2012_ - New jar and full distribution files available for v0.1.2, including demo code for two newly submitted papers
_31/10/2012_ - Jar and full distribution files available for v0.1.1 (first distribution)
_7/5/2012_ - JIDT project created and code uploaded
This project has been supported by funding through:
* Australian Research Council Discovery Early Career Researcher Award (DECRA) "Relating function of complex networks to structure using information theory", J.T. Lizier, 2016-19 DE160100630
* Universities Australia - Deutscher Akademischer Austauschdienst (German Academic Exchange Service) UA-DAAD Australia-Germany Joint Research Co-operation grant "Measuring neural information synthesis and its impairment", Wibral, Lizier, Priesemann, Wollstadt, Finn, 2016-17
* University of Sydney Research Accelerator (SOAR) Fellowship 2019 Scheme, J.T. Lizier (CI), 2019-2020
* Australian Research Council Discovery Project "Large-scale computational modelling of epidemics in Australia: analysis, prediction and mitigation", M. Prokopenko, P. Pattison, M. Gambhir, J.T. Lizier, M. Piraveenan, 2016-19 DP160102742
