PyGAD-2.12.0

Release Date: 20 February 2021

1. 4 new instance attributes are added to hold temporary results after each generation: last_generation_fitness holds the fitness values of the solutions in the last generation, last_generation_parents holds the parents selected from the last generation, last_generation_offspring_crossover holds the offspring generated after applying the crossover in the last generation, and last_generation_offspring_mutation holds the offspring generated after applying the mutation in the last generation. You can access these attributes inside the on_generation() method for example.
2. A bug fixed when the initial_population parameter is used. The bug occurred due to a mismatch between the data type of the array assigned to initial_population and the gene type in the gene_type attribute. Assuming that the array assigned to the initial_population parameter is ((1, 1), (3, 3), (5, 5), (7, 7)) which has type int. When gene_type is set to float, then the genes will not be float but casted to int because the defined array has int type. The bug is fixed by forcing the array assigned to initial_population to have the data type in the gene_type attribute. Check the issue at GitHub: #27

Thanks to Marios Giouvanakis, a PhD candidate in Electrical & Computer Engineer, Aristotle University of Thessaloniki (Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης), Greece, for emailing me about these issues.