01 /*
02 * Java Genetic Algorithm Library (jenetics-3.7.0).
03 * Copyright (c) 2007-2016 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
19 */
20 package org.jenetics.tool.evaluation;
21
22 import static java.lang.Math.log10;
23 import static java.lang.Math.max;
24 import static java.lang.Math.pow;
25 import static org.jenetics.tool.evaluation.engines.KNAPSACK;
26
27 import java.util.function.Supplier;
28 import java.util.stream.IntStream;
29
30 import org.jenetics.BitGene;
31 import org.jenetics.MonteCarloSelector;
32 import org.jenetics.engine.limit;
33 import org.jenetics.tool.trial.Params;
34 import org.jenetics.tool.trial.TrialMeter;
35 import org.jenetics.util.ISeq;
36
37 /**
38 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
39 * @version 3.5
40 * @since 3.5
41 */
42 public class KnapsackSelectorComparison {
43
44 private static final double GEN_BASE = pow(10, log10(100)/20.0);
45 private static final Params<Long> PARAMS = Params.of(
46 "Fixed generation",
47 IntStream.rangeClosed(1, 50)
48 .mapToLong(i -> max((long)pow(GEN_BASE, i), i))
49 .mapToObj(Long::valueOf)
50 .collect(ISeq.toISeq())
51 );
52
53 private static final Supplier<TrialMeter<Long>>
54 TRIAL_METER = () -> TrialMeter.of(
55 "Fixed generation", "Create fixed generation performance measures",
56 PARAMS,
57 "Generation1",
58 "Fitness1",
59 "Runtime1",
60 "Generation2",
61 "Fitness2",
62 "Runtime2"
63 );
64
65 public static void main(final String[] args) throws InterruptedException {
66 final Runner2<Long, BitGene, Double> runner = Runner2.of(
67 KNAPSACK.builder()
68 .selector(new MonteCarloSelector<>())
69 .build(),
70 limit::byFixedGeneration,
71 KNAPSACK,
72 limit::byFixedGeneration,
73 TRIAL_METER,
74 args
75 );
76
77 runner.start();
78 runner.join();
79 }
80
81 }
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