Question

所以我想运行OptaPlanner的基准测试，并且能够成功实现各种问题（tsp，vrp）。

现在，我正在为更复杂的vrp运行它，但是在生成基准报告期间遇到ArrayIndexOutOfBoundsException的问题。

// start benchmark
PlannerBenchmarkFactory plannerBenchmarkFactory = PlannerBenchmarkFactory.createFromXmlFile(
    new File("src/main/resources/vehiclerouting/benchmark/vrpBenchmarkConfig.xml"));

PlannerBenchmark plannerBenchmark = plannerBenchmarkFactory.buildPlannerBenchmark();
plannerBenchmark.benchmark(); //exception is thrown here.

向下钻取我发现它发生在writeBestScoreSummaryChart()中的BenchMarkReport中。

private void writeBestScoreSummaryChart() {
    // Each scoreLevel has it's own dataset and chartFile
    List<DefaultCategoryDataset> datasetList = new ArrayList<>(CHARTED_SCORE_LEVEL_SIZE);
    for (SolverBenchmarkResult solverBenchmarkResult : plannerBenchmarkResult.getSolverBenchmarkResultList()) {
        String solverLabel = solverBenchmarkResult.getNameWithFavoriteSuffix();
        for (SingleBenchmarkResult singleBenchmarkResult : solverBenchmarkResult.getSingleBenchmarkResultList()) {
            String planningProblemLabel = singleBenchmarkResult.getProblemBenchmarkResult().getName();
            if (singleBenchmarkResult.hasAllSuccess()) {
                double[] levelValues = ScoreUtils.extractLevelDoubles(singleBenchmarkResult.getAverageScore());
                for (int i = 0; i < levelValues.length && i < CHARTED_SCORE_LEVEL_SIZE; i++) {
                    if (i >= datasetList.size()) {
                        datasetList.add(new DefaultCategoryDataset());
                    }
                    datasetList.get(i).addValue(levelValues[i], solverLabel, planningProblemLabel);
                }
            }
        }
    }
    bestScoreSummaryChartFileList = new ArrayList<>(datasetList.size());
    int scoreLevelIndex = 0;
    for (DefaultCategoryDataset dataset : datasetList) {
        String scoreLevelLabel = plannerBenchmarkResult.findScoreLevelLabel(scoreLevelIndex);
        CategoryPlot plot = createBarChartPlot(dataset,
                "Best " + scoreLevelLabel, NumberFormat.getInstance(locale));
        JFreeChart chart = new JFreeChart("Best " + scoreLevelLabel + " summary (higher is better)",
                JFreeChart.DEFAULT_TITLE_FONT, plot, true);
        bestScoreSummaryChartFileList.add(writeChartToImageFile(chart, "bestScoreSummaryLevel" + scoreLevelIndex));
        scoreLevelIndex++;
    }
}

在以上方法中，datasetList的大小为7。（我们有7个评分等级-> 6个硬，1个软）。

在第二个循环中调用plannerBenchmarkResult.findScoreLevelLabel(scoreLevelIndex);时，findScoreLevelLabel()仅返回5分。即：hard 0 score，hard 1 score hard 2 score hard 3 score和soft 0 score。

因此，一旦scoreLevelLabel的值为>4，就会抛出ArrayIndexOutOfBoundsException。关于为何Optaplanner注册5个分数级别而应该设置7个分数的任何想法/提示。

编辑堆栈跟踪：

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 5
at org.optaplanner.benchmark.impl.result.PlannerBenchmarkResult.findScoreLevelLabel(PlannerBenchmarkResult.java:242)
at org.optaplanner.benchmark.impl.report.BenchmarkReport.writeBestScoreSummaryChart(BenchmarkReport.java:365)
at org.optaplanner.benchmark.impl.report.BenchmarkReport.writeReport(BenchmarkReport.java:241)
at org.optaplanner.benchmark.impl.DefaultPlannerBenchmark.benchmarkingEnded(DefaultPlannerBenchmark.java:306)
at org.optaplanner.benchmark.impl.DefaultPlannerBenchmark.benchmark(DefaultPlannerBenchmark.java:104)
at benchmark.BenchMarker.main(BenchMarker.java:57)

Answer 1

我发现了问题。

@PlanningScore(bendableHardLevelsSize = 4, bendableSoftLevelsSize = 1)
public BendableLongScore getScore() {
    return score;
}

添加更多级别时，不会更新适当的分数级别。我不知道错误的声明如何影响Optaplanner。除了（反序列化）之外，这些级别是否还用于其他用途？

在OptaPlanner中生成基准测试报告期间出现ArrayIndexOutOfBoundsException

1 个答案: