source: framspy/evolalg/statistics/multistatistics_deap.py @ 1147

Last change on this file since 1147 was 1147, checked in by Maciej Komosinski, 6 weeks ago

Multi-criteria optimization, can optionally include diversity is one criterion

File size: 824 bytes
Line 
1from deap import tools
2
3from evolalg.statistics.statistics import Statistics
4
5
6class MultiStatistics(Statistics):
7    def __init__(self, stats, verbose=True, *args, **kwargs):
8        super(MultiStatistics, self).__init__(*args, **kwargs)
9        self._org_stats = stats
10        self.stats = tools.MultiStatistics(**stats)
11        self.logbook = tools.Logbook()
12        self.logbook.header = ['gen'] + (self.stats.fields if self.stats else [])
13        self.verbose = verbose
14        self.gen = 0
15
16    def init(self):
17        for v in self._org_stats.values():
18            v.init()
19        self.gen = 0
20
21    def collect(self, population):
22        record = self.stats.compile(population)
23        self.logbook.record(gen=self.gen, **record)
24        self.gen += 1
25        if self.verbose:
26            print(self.logbook.stream)
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