AlgoGenetic2.py

#
# Copyright (c) 2016, Gabriel Linder <linder.gabriel@gmail.com>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#

from AlgoGenetic import AlgoGenetic


class AlgoGenetic2(AlgoGenetic):

    OPS = ['reproduce1', 'reproduce2']

    def crossover(self, G1, G2, op):

        def alleles(gene):
            a1 = (gene & 0xf0) >> 4
            a2 = gene & 0x0f
            return a1, a2

        G1A1, G1A2 = alleles(G1)
        G2A1, G2A2 = alleles(G2)

        if op == 'reproduce1':
            return (G1A1 << 4) | G2A2
        elif op == 'reproduce2':
            return (G2A1 << 4) | G1A2