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Change Log

All notable changes to this project will be documented in this file. This project adheres to Semantic Versioning.

Section Groups

  • Added - for new features
  • Changed - for changes in existing functionality
  • Deprecated - for once-stable features removed in upcoming releases
  • Removed - for deprecated features removed in this release
  • Fixed - for any bug fixes
  • Security - to invite users to upgrade in case of vulnerabilities
  • Unreleased - shows changes as they occur - allows users to anticipate new functionality.

Unreleased [0.6.14-SNAPSHOT]

Removed

Added

Changed

Fixed

[v0.6.13-alpha] Hot Fix!

Removed

Added

  • [PR #518] Added FieldMetaTypeTest.java

Changed

Fixed

  • [PR #518] Fixed "bool" type decode bug

[v0.6.12-alpha]

Removed

Added

  • [PR #511] SDRClassifier Network API Integration
  • [PR #511] Added new Classifier.java interface
  • [PR #511] Added Tests for new integration

Changed

Fixed

[v0.6.10-alpha]

Removed

Added

Changed

  • [PR #496] Moved Connections.java and ComputeCycle.java and other "model" files to package: org.numenta.nupic.model
  • [PR #496] Updated the TemporalMemory and all unit/compatibility tests to be in sync with latest NuPIC version (Updated: 2016-09-23 SHA 1036f25e7223471d72cebc536d6734f78d37b6c7)
  • [PR #486] Updated the SpatialPooler and all unit/compatibility tests to be in sync with latest NuPIC version (Updated: 2016-09-22 SHA a3587db662ddc365ed371c81eb4166a41ad4bc3d)

Fixed

[v0.6.9-alpha] - 2016-09-29

Removed

  • [Issues #471] Removed all references to "verbosity" in Connections and Parameters classes
  • [Issues #470] Removed old JSON serializer/deserializer from CLAClassifer
  • All references to "Verbosity" as its a Python convention and not Java
  • JSON CLAClassifier serializer / deserializer, replaced with new PersistenceAPI

Added

  • [PR #480] Added new RDSECompatibilityTest
  • [PR #478] Added Post-init method to Connections to correct non-initialized derived SpatialPooler parameters.
  • [PR #467] Added new SpatialPoolerCompatibilityTest
  • Added new SpatialPooler class
  • Added new SpatialPoolerTest class
  • Added new TemporalMemory class
  • Added new TemporalMemoryTest class
  • Added Connections.getPrintString() to return parameter printout
  • Parameters key Parameters.KEY.MAX_SEGMENTS_PER_CELL
  • Parameters key Parameters.KEY.MAX_NEW_SYNAPSE_COUNT
  • Added new UniversalRandom RNG which has an allegory in python which can be used to compare versions
  • Added new methods on the MTJ matrices to add and remove rows and columns
  • Added new Algorithm Foundry culled jar containing Sandia wrapper for the MTJ linear algebra lib
  • [PR #453] Added gradlew functionality for quick builds from scratch without any prior installation of Java or Gradle.
  • [PR #439] Added a new SDRClassifier !!!
  • [PR #435] Added ObservableTestBase class for improved AssertFailure detection in tests using Observables

Changed

  • Connections.apply() now sets the seed value from the Parameters object.
  • Parameters.(g|s)etParameterByKey to simplified get() / set()
  • KEY.MIN_PCT_OVERLAP_DUTY_CYCLE to KEY.MIN_PCT_OVERLAP_DUTY_CYCLES
  • KEY.MIN_PCT_ACTIVE_DUTY_CYCLE to KEY.MIN_PCT_ACTIVE_DUTY_CYCLES

Fixed

  • [Issues #468] Parameters.checkRange now checks values "at" the range boundary as well.
  • Fixed documentation of SpatialPooler.inhibitColumnsLocal - added parameter documentation
  • [PR #451] Fixed not filled overlaps array in updateDutyCycles in SP
  • [PR #435] Fixed AssertFailure detection within onNext() method in NAPI Observable tests
  • [PR #431] BitHistory re-scaling fix (in CLAClassifier functionality)
  • [PR #431] Cleaned up tabs and spaces in BitHistory

[v0.6.8-alpha] - 2016-05-02

Changed

  • [PR #419] Added additional check for running thread before calling halt during store() operation. This avoids calling halt() via the Persistable interface during serialize calls of HTMObjectOutput for our partners at flink-htm
  • [Issue #418] Internal change to HTMObjectOutput and HTMObjectInput constructors to pass in the FSTConfiguration to avoid creating it twice.
  • [PR #419] Changed default mode of Gradle build script to not write debug output to standard out

[v0.6.6-alpha] - 2016-04-14

Removed

  • [PR #384] Removed obsolete demo jars which are in htm.java-examples and don't need to be here.
  • Removed setSpVerbosity() method from Parameters.java

Added

  • [PR #412] Added new PersistenceAPI (includes serialization; stream handling; new classes and new "serialize" package)
  • [PR #412] Added changes to build script for forcing tests to run when source hasn't changed
  • [PR #412] Added changes to build script for easy turn on of debug output
  • [PR #405] Added new Docker File reference-build environment!
  • [PR #397] Added close() method to the Network class to bring it inline with Region & Layer - Added Tests for new functionality. (@Mandarx)
  • [PR #396] Added Local.US to MetricsTrace to ensure (expected) dots.
  • [PR #386] Added test for close() method in LayerTest
  • [PR #378] Added more utility methods to ArrayUtils in prep for KNNClassifier development
  • [[PR #375](https://github.com/numenta/htm.java/pull 375)] Added new override of rightVecSumAtNZ() method to Matrix classes.
  • [PR #373] Added "activeCells" field and to ManualInput.copy()
  • [PR #370] Added FastRandom implementation (yields 2x speed increase to codebase!) from MoClu's (@antidata)
  • [PR #370] Added Tests for FastRandom (util package)
  • [PR #359] Added HourOfWeek to DateEncoder.
  • [PR #364] Added 15min Hot Gym data file.

Changed

  • [PR #412] Renamed class EncoderResult to Encoding
  • [PR #412] Renamed class ClassifierResult to Classification
  • [PR #404] LayerTest & PALayerTest, subscribe() and start() call order to eliminate Thread Race Condition and run on OpenJDK
  • (3-1-2016) Updated htm.java-examples for change to GLOBAL_INHIBITION parameter (sync)
  • [PR #391] Incremented the Gradle Shade Plugin version to 1.2.3
  • [PR #379] Changed SYN_PERM_THRESHOLD to be in line with SYN_PERM_CONNECTED
  • [[PR #375](https://github.com/numenta/htm.java/pull 375)] Optimized SpatialPooler.calculateOverlaps by adding the stimulus threshold to the rightVecSumAtNZ() method so we only loop once instead of twice.
  • [PR #373] Changed Matrix class hierarchy naming from XXXSupport to AbstractXXX - more conventional
  • [PR #373] Parameters.KEY_GLOBALINHIBITIONS to KEY_GLOBALINHIBITION
  • [PR #365] Changed inhibitColumnsGlobal() to use Java 8 Streams - 50% performance increase! Fixes Issue #354
  • [PR #370] Changed Connections initialization to be able to specify RNG implementation from Parameters value.

Fixed

  • [PR #386] Fixed floating point problem in Layer dimension inference
  • [PR #373] Rooted out cause of codebase indeterminacy!
  • [PR #360] Fixed dayOfWeek to accept fractional values.
  • [PR #362] Fix for Generic Observable execution order. Fixes Issue #363
  • [PR #367] Fixed some class and method java docs.

[v0.6.5-alpha] - 2015-11-11

Added

  • Added Class MultiEncoderAssembler for ME construction
  • Added Tests for new MultiEncoderAssembler
  • Added @fergalbyrne added PASpatialPooler
  • Added @fergalbyrne added PALayer, and PALayerTest
  • Added .classpath file back into repo with correct classpath (includes dependencies) TemporalMemory and the input of the CLAClassifier

Changed

  • Changed Refactored MultiEncoder building so that manual construction has benefit of evolved code
  • Network API Re-write Changed data transformed between a

Removed

  • Removed Problematic test in LayerTest and PALayerTest which hung build
  • Removed .classpath from .gitignore

[v0.6.4-alpha] - 2015-10-23

Added

  • New SDR class - for sdr related convenience methods
  • [PR #329] - Added low memory implementation of SparseMatrix classes and including tests
  • [Issue #323 PR #324] - Added / Fixed ability to input Coordinate data into the NAPI sensors.
  • [Issue #319] - Added feedback for Network thread start detection
  • [Issue #319] - (same issue) Added Thread Start detection for computeImmediate() synchronous call failure.
  • [Issue #319] - (same issue) Added new tests in NetworkTest.java to ensure above functionality

Changed

  • [PR #335] - Re-write of TemporalMemory to CLAClassifier data type for input of Active Cells instead of Predicted Column-cells
  • [PR #333] - Corrected the getNeighborsND method to use topology matrix instead of input matrix for dimension calculations

[v0.6.2-alpha] - 2015-09-15

Added

  • [Issue #308] - Added ability to specify "isLearn" programmatically, instead of just through the stream input
  • [Issue #286] - Work on feeding arrays into NAPI - can now read binary arrays (as Strings) directly from file or manually using ObservableSensor
  • Added new SDRPassThroughEncoder which more efficiently sends data through to output and handles both dense and sparse inputs
  • Added 2 new FieldMetaType Enums with their decodeType() methods for int[]s as Strings
  • Added new tests in LayerTest, HTMSensorTest, ObservableSensorTest
  • [Issue #300] Added wiki help for Linux Gradle Issue

Changed

  • Changed ExtensiveTemporalMemoryTest to include fixes for test "H10" (Orphan Decay)
  • Fixed PassThroughEncoder and SparsePassThroughEncoder initialization of n and w
  • Generified PassThroughEncoder and SparsePassThroughEncoder for efficient subclassing

Fixed

  • Fixed "isLearn" programmatic setting propagation through the network, added test in RegionTest
  • Fixed default anomaly score in Layer.java's Anomaly Func (was 0.0, now 1.0)
  • [Issue #305] - Fixed Synapses not completely removed
  • [PR #294] - Fixes JaCoCo Coverage Reports (by Evgeny Mandrikov)

[0.6.1] - 2015-08-23

Changed

  • Removed nested local repo declarations from pom.xml and build.gradle files to finally fix maven project inclusion

[0.6.0] - 2015-08-23

Added

  • htm.java-examples!! - Split off Demos/Examples repo which can be seen here
  • Newly ported MonitorMixinFramework for algorithm monitoring and commandline printing of the internals of the TemporalMemory and can be used for other algorithms.

Changed

  • [Issue #270] - Sync Up TemporalMemory with current version (evolved into total re-write)
  • Moved the algorithms to the "algorithms" package from the "research package". The research package will be used for additions to research.
  • The TemporalMemory now doesn't create container collections to wrap the paramter arguments to the compute(). This should result in faster executions and less memory consumption.
  • Cells, Columns, Synapses now cache their hashcodes since they are immutable which should save time when using them as indexes to maps and during comparisons.
  • Re-written unit and integration tests to use MonitorMixinFramework.
  • Extracted all extraneous files and classes to make the demo jars smaller.
  • Other small efficiency changes...

Removed

  • BasicTemoralMemoryTest - from old integration test module
  • TemporalMemoryPatternMachine - from old integration test module

[0.5.5] - 2015-08-15

Added

  • New Hot Gym Demo and README.md landing page

Fixed

  • All demo jar sizes by taking out unneeded artifacts and files

[0.5.4] - 2015-08-12

Changed

  • pom.xml Added In-Project maven repo as attempt to solve transitive dependency failure (not working)

[0.5.3] - 2015-08-11

Changed

  • [Issue #260] - Add synchronous compute call to get an immediate response back in a "blocking way" in the same thread that calls the network. Solved in [PR #263]
  • [PR #265] - Updated Javadocs for #260

[0.5.2] - 2015-07-26

Added

  • This change log
  • 2 new Cortical.io demos "FoxEatsDemo" & "BreakingNews"
  • Tests for the above demos
  • Executable Jar files for the above demos
  • New wiki pages for demo orientation and instructions
  • New JavaDocs for demo packages and classes (2015-07-27, Brev Patterson)