JAMES Core v1.2

• Added public method init() to Search to perform initialization. This method is called from within searchStarted() but may also be called prior to execution.
• Updated LocalSearch, LRsubsetSearch, NeighbourhoodSearch and BasicParallelSearch to use the new init() method for initialization and validation.
• When initializing a ParallelTempering or BasicParallelSearch algorithm all subsearches are now initialized as well.
• Added public method setCurrentSolution(solution, evaluation, validation) to LocalSearch to set a new current solution with known evaluation and validation.
• Avoid full re-evaluation and re-validation when swapping solutions between replicas in ParallelTempering. [#18]
• Benefit from delta evaluation and validation when shaking in VariableNeighbourhoodSearch. [#17]
• Added methods to clear all stop criteria and search listeners.
• Indicative error message when copy() yields null in Solution.checkedCopy(solution). [#32]

JAMES Core v1.1

• Replaced abstract class AbstractProblem with concrete class GenericProblem.
  The former class had a single abstract method, responsible for generating random
  solutions. This has been replaced with delegation through a newly defined
  RandomSolutionGenerator interface. It is now possible (and preferred) to
  model custom problems by plugging in the data, objective, constraints (if any)
  and random solution generator in a GenericProblem, avoiding the need to extend
  and abstract problem class. The predefined SubsetProblem includes a default,
  but now easily customizable, random subset solution generator.
• Added a constructor to SubsetProblem that allows to easily create a subset
  problem without subset size limits.
• Reordered arguments in SubsetProblem constructors.
• Various improvements.

JAMES Core v1.0

• Dedicated customizable random generator per search.
• Reduced overhead of checking stop criteria.
• Various improvements and minor bug fixes.
• Improved test coverage.
• Cleaned up log messages.
• Moved SearchFactory interface from extensions to core module. Grouped various factory interfaces in package org.jamesframework.core.factory.
• Moved to SLF4J API 1.7.12.

JAMES Core v0.2

• Added support for efficient delta evaluations and validations.
• Provided additional subset neighbourhoods.
• Added option to sort IDs of selected items in a subset solution using a custom comparator.
• Renamed SubsetData to IntegerIdentifiedData.
• Renamed ProblemWithData to AbstractProblem.
• Refactored abstract Solution class.
• Reorganized package structure.
• Removed SubsetProblem interface and renamed SubsetProblemWithData to SubsetProblem.
• Removed MinMaxObjective.
• Removed EmptySearchListener, LocalSearchListener and EmptyLocalSearchListener. Default empty implementations of all callbacks are now directly provided in the SearchListener interface.
• Various code simplifications and optimizations (e.g. using functional operations).
• Minor bugfixes and improvements.
• Moved to SLF4J API 1.7.7.
• Moved to Java 8.

JAMES Core v0.1

First stable release.