0.2.0

This is the second major release of the hal-cgp library.

It contains the following changes:

New features

• Provide possibility to restrict local search to k best individuals #160
• Track parent id in offsprings, i.e., cloned individuals, to allow the reconstruction of full lineages #168
• New logic for mutation of genes: instead of mutating the same number of genes in each offspring, the number of mutations is now sampled from a distribution #180
• Allow multiple parameters for parametrized nodes #191
• Sphinx-powered documentation #181 , #188 , #189 , #200 , #205 , #218 , #220 , #223 , #234
• Extend cache decorator with functional equivalence checking #207
• Use norm clipping instead of value clipping to avoid changing the direction of the gradient in local search #210
• Make sure user-set attributes of individuals are copied to offspring to allow consistent recording #222
• New node: if/else operator to support, for example, piecewise target functions #231
• New Examples: #227 (minimal example), #230 (using multiple genomes), #231 (using if/else node)
• Add option to limit number of fitness evaluations instead of number of generations #238
• Add functionality to reorder the nodes in the parents genome(s) before creating offspring #239

Bugfixes

• Avoid parameters being reininitialized in Genome.mutate() #213
• Fix broken Node.repr #233

Maintenance

• Improvements in test suite #161 , #171 , #176 , #179 , #190 , #193
• Simplification of internal routines #169, #170
• Simplification of the Node class #178
• Removal of crossover operation and breeding pool #195
• Remove unused function _is_active_input_gene #211
• Use "logical and", and reuse existing functions in helper functions of Genome #212
• Sort imports consistently #219

Contributors (in alphabetical order)

Jakob Jordan
Henrik Mettler
Maximilian Schmidt