Examples with PerturbationContext org.kie.kogito.explainability.model.PerturbationContext used on opensource projects

Example 36 with PerturbationContext

use of org.kie.kogito.explainability.model.PerturbationContext in project kogito-apps by kiegroup.

the class LimeExplainerTest method testWithDataDistribution.

@Test
void testWithDataDistribution() throws InterruptedException, ExecutionException, TimeoutException {
    Random random = new Random();
    PerturbationContext perturbationContext = new PerturbationContext(4L, random, 1);
    List<FeatureDistribution> featureDistributions = new ArrayList<>();
    int nf = 4;
    List<Feature> features = new ArrayList<>();
    for (int i = 0; i < nf; i++) {
        Feature numericalFeature = FeatureFactory.newNumericalFeature("f-" + i, Double.NaN);
        features.add(numericalFeature);
        List<Value> values = new ArrayList<>();
        for (int r = 0; r < 4; r++) {
            values.add(Type.NUMBER.randomValue(perturbationContext));
        }
        featureDistributions.add(new GenericFeatureDistribution(numericalFeature, values));
    }
    DataDistribution dataDistribution = new IndependentFeaturesDataDistribution(featureDistributions);
    LimeConfig limeConfig = new LimeConfig().withDataDistribution(dataDistribution).withPerturbationContext(perturbationContext).withSamples(10);
    LimeExplainer limeExplainer = new LimeExplainer(limeConfig);
    PredictionInput input = new PredictionInput(features);
    PredictionProvider model = TestUtils.getSumThresholdModel(random.nextDouble(), random.nextDouble());
    PredictionOutput output = model.predictAsync(List.of(input)).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit()).get(0);
    Prediction prediction = new SimplePrediction(input, output);
    Map<String, Saliency> saliencyMap = limeExplainer.explainAsync(prediction, model).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit());
    assertThat(saliencyMap).isNotNull();
    String decisionName = "inside";
    Saliency saliency = saliencyMap.get(decisionName);
    assertThat(saliency).isNotNull();
}

Example 37 with PerturbationContext

use of org.kie.kogito.explainability.model.PerturbationContext in project kogito-apps by kiegroup.

the class LimeExplainerTest method testSparseBalance.

@ParameterizedTest
@ValueSource(longs = { 0, 1, 2, 3, 4 })
void testSparseBalance(long seed) throws InterruptedException, ExecutionException, TimeoutException {
    for (int nf = 1; nf < 4; nf++) {
        Random random = new Random();
        int noOfSamples = 100;
        LimeConfig limeConfigNoPenalty = new LimeConfig().withPerturbationContext(new PerturbationContext(seed, random, DEFAULT_NO_OF_PERTURBATIONS)).withSamples(noOfSamples).withPenalizeBalanceSparse(false);
        LimeExplainer limeExplainerNoPenalty = new LimeExplainer(limeConfigNoPenalty);
        List<Feature> features = new ArrayList<>();
        for (int i = 0; i < nf; i++) {
            features.add(TestUtils.getMockedNumericFeature(i));
        }
        PredictionInput input = new PredictionInput(features);
        PredictionProvider model = TestUtils.getSumSkipModel(0);
        PredictionOutput output = model.predictAsync(List.of(input)).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit()).get(0);
        Prediction prediction = new SimplePrediction(input, output);
        Map<String, Saliency> saliencyMapNoPenalty = limeExplainerNoPenalty.explainAsync(prediction, model).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit());
        assertThat(saliencyMapNoPenalty).isNotNull();
        String decisionName = "sum-but0";
        Saliency saliencyNoPenalty = saliencyMapNoPenalty.get(decisionName);
        LimeConfig limeConfig = new LimeConfig().withPerturbationContext(new PerturbationContext(seed, random, DEFAULT_NO_OF_PERTURBATIONS)).withSamples(noOfSamples).withPenalizeBalanceSparse(true);
        LimeExplainer limeExplainer = new LimeExplainer(limeConfig);
        Map<String, Saliency> saliencyMap = limeExplainer.explainAsync(prediction, model).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit());
        assertThat(saliencyMap).isNotNull();
        Saliency saliency = saliencyMap.get(decisionName);
        for (int i = 0; i < features.size(); i++) {
            double score = saliency.getPerFeatureImportance().get(i).getScore();
            double scoreNoPenalty = saliencyNoPenalty.getPerFeatureImportance().get(i).getScore();
            assertThat(Math.abs(score)).isLessThanOrEqualTo(Math.abs(scoreNoPenalty));
        }
    }
}

Example 38 with PerturbationContext

use of org.kie.kogito.explainability.model.PerturbationContext in project kogito-apps by kiegroup.

the class LimeExplainerTest method testEmptyPrediction.

@ParameterizedTest
@ValueSource(longs = { 0, 1, 2, 3, 4 })
void testEmptyPrediction(long seed) throws ExecutionException, InterruptedException, TimeoutException {
    Random random = new Random();
    LimeConfig limeConfig = new LimeConfig().withPerturbationContext(new PerturbationContext(seed, random, DEFAULT_NO_OF_PERTURBATIONS)).withSamples(10);
    LimeExplainer limeExplainer = new LimeExplainer(limeConfig);
    PredictionInput input = new PredictionInput(Collections.emptyList());
    PredictionProvider model = TestUtils.getSumSkipModel(0);
    PredictionOutput output = model.predictAsync(List.of(input)).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit()).get(0);
    Prediction prediction = new SimplePrediction(input, output);
    assertThrows(LocalExplanationException.class, () -> limeExplainer.explainAsync(prediction, model));
}

Example 39 with PerturbationContext

use of org.kie.kogito.explainability.model.PerturbationContext in project kogito-apps by kiegroup.

the class LimeExplainerTest method testNonEmptyInput.

@ParameterizedTest
@ValueSource(longs = { 0, 1, 2, 3, 4 })
void testNonEmptyInput(long seed) throws ExecutionException, InterruptedException, TimeoutException {
    Random random = new Random();
    LimeConfig limeConfig = new LimeConfig().withPerturbationContext(new PerturbationContext(seed, random, DEFAULT_NO_OF_PERTURBATIONS)).withSamples(10);
    LimeExplainer limeExplainer = new LimeExplainer(limeConfig);
    List<Feature> features = new ArrayList<>();
    for (int i = 0; i < 4; i++) {
        features.add(TestUtils.getMockedNumericFeature(i));
    }
    PredictionInput input = new PredictionInput(features);
    PredictionProvider model = TestUtils.getSumSkipModel(0);
    PredictionOutput output = model.predictAsync(List.of(input)).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit()).get(0);
    Prediction prediction = new SimplePrediction(input, output);
    Map<String, Saliency> saliencyMap = limeExplainer.explainAsync(prediction, model).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit());
    assertNotNull(saliencyMap);
}

Example 40 with PerturbationContext

use of org.kie.kogito.explainability.model.PerturbationContext in project kogito-apps by kiegroup.

the class LimeStabilityTest method testStabilityDeterministic.

@ParameterizedTest
@ValueSource(longs = { 0, 1, 2, 3, 4 })
void testStabilityDeterministic(long seed) throws Exception {
    List<LocalSaliencyStability> stabilities = new ArrayList<>();
    for (int j = 0; j < 2; j++) {
        Random random = new Random();
        PredictionProvider model = TestUtils.getSumSkipModel(0);
        List<Feature> featureList = new LinkedList<>();
        for (int i = 0; i < 5; i++) {
            featureList.add(TestUtils.getMockedNumericFeature(i));
        }
        PredictionInput input = new PredictionInput(featureList);
        List<PredictionOutput> predictionOutputs = model.predictAsync(List.of(input)).get(Config.INSTANCE.getAsyncTimeout(), Config.INSTANCE.getAsyncTimeUnit());
        Prediction prediction = new SimplePrediction(input, predictionOutputs.get(0));
        LimeConfig limeConfig = new LimeConfig().withSamples(10).withPerturbationContext(new PerturbationContext(seed, random, 1));
        LimeExplainer explainer = new LimeExplainer(limeConfig);
        LocalSaliencyStability stability = ExplainabilityMetrics.getLocalSaliencyStability(model, prediction, explainer, 2, 10);
        stabilities.add(stability);
    }
    LocalSaliencyStability first = stabilities.get(0);
    LocalSaliencyStability second = stabilities.get(1);
    String decisionName = "sum-but0";
    assertThat(first.getNegativeStabilityScore(decisionName, 1)).isEqualTo(second.getNegativeStabilityScore(decisionName, 1));
    assertThat(first.getPositiveStabilityScore(decisionName, 1)).isEqualTo(second.getPositiveStabilityScore(decisionName, 1));
    assertThat(first.getNegativeStabilityScore(decisionName, 2)).isEqualTo(second.getNegativeStabilityScore(decisionName, 2));
    assertThat(first.getPositiveStabilityScore(decisionName, 2)).isEqualTo(second.getPositiveStabilityScore(decisionName, 2));
}