Examples with DecisionTreeModel org.apache.ignite.ml.trees.models.DecisionTreeModel used on opensource projects

Example 1 with DecisionTreeModel

use of org.apache.ignite.ml.trees.models.DecisionTreeModel in project ignite by apache.

the class SplitDataGenerator method testByGen.

/**
 */
<D extends ContinuousRegionInfo> void testByGen(int totalPts, IgniteFunction<ColumnDecisionTreeTrainerInput, ? extends ContinuousSplitCalculator<D>> calc, IgniteFunction<ColumnDecisionTreeTrainerInput, IgniteFunction<DoubleStream, Double>> catImpCalc, IgniteFunction<DoubleStream, Double> regCalc, Ignite ignite) {
    List<IgniteBiTuple<Integer, V>> lst = points(totalPts, (i, rn) -> i).collect(Collectors.toList());
    Collections.shuffle(lst, rnd);
    SparseDistributedMatrix m = new SparseDistributedMatrix(totalPts, featCnt + 1, StorageConstants.COLUMN_STORAGE_MODE, StorageConstants.RANDOM_ACCESS_MODE);
    Map<Integer, List<LabeledVectorDouble>> byRegion = new HashMap<>();
    int i = 0;
    for (IgniteBiTuple<Integer, V> bt : lst) {
        byRegion.putIfAbsent(bt.get1(), new LinkedList<>());
        byRegion.get(bt.get1()).add(asLabeledVector(bt.get2().getStorage().data()));
        m.setRow(i, bt.get2().getStorage().data());
        i++;
    }
    ColumnDecisionTreeTrainer<D> trainer = new ColumnDecisionTreeTrainer<>(3, calc, catImpCalc, regCalc, ignite);
    DecisionTreeModel mdl = trainer.train(new MatrixColumnDecisionTreeTrainerInput(m, catFeaturesInfo));
    byRegion.keySet().forEach(k -> mdl.apply(byRegion.get(k).get(0).features()));
}

Example 2 with DecisionTreeModel

use of org.apache.ignite.ml.trees.models.DecisionTreeModel in project ignite by apache.

the class ColumnDecisionTreeTrainerBenchmark method tstMNISTSparseDistributedMatrix.

/**
 * Run decision tree classifier on MNIST using sparse distributed matrix as a storage for dataset.
 * To run this test rename this method so it starts from 'test'.
 *
 * @throws IOException In case of loading MNIST dataset errors.
 */
public void tstMNISTSparseDistributedMatrix() throws IOException {
    IgniteUtils.setCurrentIgniteName(ignite.configuration().getIgniteInstanceName());
    int ptsCnt = 30_000;
    int featCnt = 28 * 28;
    Properties props = loadMNISTProperties();
    Stream<DenseLocalOnHeapVector> trainingMnistStream = MnistUtils.mnist(props.getProperty(PROP_TRAINING_IMAGES), props.getProperty(PROP_TRAINING_LABELS), new Random(123L), ptsCnt);
    Stream<DenseLocalOnHeapVector> testMnistStream = MnistUtils.mnist(props.getProperty(PROP_TEST_IMAGES), props.getProperty(PROP_TEST_LABELS), new Random(123L), 10_000);
    SparseDistributedMatrix m = new SparseDistributedMatrix(ptsCnt, featCnt + 1, StorageConstants.COLUMN_STORAGE_MODE, StorageConstants.RANDOM_ACCESS_MODE);
    SparseDistributedMatrixStorage sto = (SparseDistributedMatrixStorage) m.getStorage();
    loadVectorsIntoSparseDistributedMatrixCache(sto.cache().getName(), sto.getUUID(), trainingMnistStream.iterator(), featCnt + 1);
    ColumnDecisionTreeTrainer<GiniSplitCalculator.GiniData> trainer = new ColumnDecisionTreeTrainer<>(10, ContinuousSplitCalculators.GINI.apply(ignite), RegionCalculators.GINI, RegionCalculators.MOST_COMMON, ignite);
    X.println("Training started");
    long before = System.currentTimeMillis();
    DecisionTreeModel mdl = trainer.train(new MatrixColumnDecisionTreeTrainerInput(m, new HashMap<>()));
    X.println("Training finished in " + (System.currentTimeMillis() - before));
    IgniteTriFunction<Model<Vector, Double>, Stream<IgniteBiTuple<Vector, Double>>, Function<Double, Double>, Double> mse = Estimators.errorsPercentage();
    Double accuracy = mse.apply(mdl, testMnistStream.map(v -> new IgniteBiTuple<>(v.viewPart(0, featCnt), v.getX(featCnt))), Function.identity());
    X.println("Errors percentage: " + accuracy);
    Assert.assertEquals(0, SplitCache.getOrCreate(ignite).size());
    Assert.assertEquals(0, FeaturesCache.getOrCreate(ignite).size());
    Assert.assertEquals(0, ContextCache.getOrCreate(ignite).size());
    Assert.assertEquals(0, ProjectionsCache.getOrCreate(ignite).size());
}

Example 3 with DecisionTreeModel

use of org.apache.ignite.ml.trees.models.DecisionTreeModel in project ignite by apache.

the class ColumnDecisionTreeTrainerBenchmark method tstMNISTBiIndexedCache.

/**
 * Run decision tree classifier on MNIST using bi-indexed cache as a storage for dataset.
 * To run this test rename this method so it starts from 'test'.
 *
 * @throws IOException In case of loading MNIST dataset errors.
 */
public void tstMNISTBiIndexedCache() throws IOException {
    IgniteUtils.setCurrentIgniteName(ignite.configuration().getIgniteInstanceName());
    int ptsCnt = 40_000;
    int featCnt = 28 * 28;
    Properties props = loadMNISTProperties();
    Stream<DenseLocalOnHeapVector> trainingMnistStream = MnistUtils.mnist(props.getProperty(PROP_TRAINING_IMAGES), props.getProperty(PROP_TRAINING_LABELS), new Random(123L), ptsCnt);
    Stream<DenseLocalOnHeapVector> testMnistStream = MnistUtils.mnist(props.getProperty(PROP_TEST_IMAGES), props.getProperty(PROP_TEST_LABELS), new Random(123L), 10_000);
    IgniteCache<BiIndex, Double> cache = createBiIndexedCache();
    loadVectorsIntoBiIndexedCache(cache.getName(), trainingMnistStream.iterator(), featCnt + 1);
    ColumnDecisionTreeTrainer<GiniSplitCalculator.GiniData> trainer = new ColumnDecisionTreeTrainer<>(10, ContinuousSplitCalculators.GINI.apply(ignite), RegionCalculators.GINI, RegionCalculators.MOST_COMMON, ignite);
    X.println("Training started.");
    long before = System.currentTimeMillis();
    DecisionTreeModel mdl = trainer.train(new BiIndexedCacheColumnDecisionTreeTrainerInput(cache, new HashMap<>(), ptsCnt, featCnt));
    X.println("Training finished in " + (System.currentTimeMillis() - before));
    IgniteTriFunction<Model<Vector, Double>, Stream<IgniteBiTuple<Vector, Double>>, Function<Double, Double>, Double> mse = Estimators.errorsPercentage();
    Double accuracy = mse.apply(mdl, testMnistStream.map(v -> new IgniteBiTuple<>(v.viewPart(0, featCnt), v.getX(featCnt))), Function.identity());
    X.println("Errors percentage: " + accuracy);
    Assert.assertEquals(0, SplitCache.getOrCreate(ignite).size());
    Assert.assertEquals(0, FeaturesCache.getOrCreate(ignite).size());
    Assert.assertEquals(0, ContextCache.getOrCreate(ignite).size());
    Assert.assertEquals(0, ProjectionsCache.getOrCreate(ignite).size());
}

Example 4 with DecisionTreeModel

use of org.apache.ignite.ml.trees.models.DecisionTreeModel in project ignite by apache.

the class ColumnDecisionTreeTrainerBenchmark method testByGenStreamerLoad.

/**
 */
private void testByGenStreamerLoad(int ptsPerReg, HashMap<Integer, Integer> catsInfo, SplitDataGenerator<DenseLocalOnHeapVector> gen, Random rnd) {
    List<IgniteBiTuple<Integer, DenseLocalOnHeapVector>> lst = gen.points(ptsPerReg, (i, rn) -> i).collect(Collectors.toList());
    int featCnt = gen.featuresCnt();
    Collections.shuffle(lst, rnd);
    int numRegs = gen.regsCount();
    SparseDistributedMatrix m = new SparseDistributedMatrix(numRegs * ptsPerReg, featCnt + 1, StorageConstants.COLUMN_STORAGE_MODE, StorageConstants.RANDOM_ACCESS_MODE);
    IgniteFunction<DoubleStream, Double> regCalc = s -> s.average().orElse(0.0);
    Map<Integer, List<LabeledVectorDouble>> byRegion = new HashMap<>();
    SparseDistributedMatrixStorage sto = (SparseDistributedMatrixStorage) m.getStorage();
    long before = System.currentTimeMillis();
    X.println("Batch loading started...");
    loadVectorsIntoSparseDistributedMatrixCache(sto.cache().getName(), sto.getUUID(), gen.points(ptsPerReg, (i, rn) -> i).map(IgniteBiTuple::get2).iterator(), featCnt + 1);
    X.println("Batch loading took " + (System.currentTimeMillis() - before) + " ms.");
    for (IgniteBiTuple<Integer, DenseLocalOnHeapVector> bt : lst) {
        byRegion.putIfAbsent(bt.get1(), new LinkedList<>());
        byRegion.get(bt.get1()).add(asLabeledVector(bt.get2().getStorage().data()));
    }
    ColumnDecisionTreeTrainer<VarianceSplitCalculator.VarianceData> trainer = new ColumnDecisionTreeTrainer<>(2, ContinuousSplitCalculators.VARIANCE, RegionCalculators.VARIANCE, regCalc, ignite);
    before = System.currentTimeMillis();
    DecisionTreeModel mdl = trainer.train(new MatrixColumnDecisionTreeTrainerInput(m, catsInfo));
    X.println("Training took: " + (System.currentTimeMillis() - before) + " ms.");
    byRegion.keySet().forEach(k -> {
        LabeledVectorDouble sp = byRegion.get(k).get(0);
        Tracer.showAscii(sp.features());
        X.println("Predicted value and label [pred=" + mdl.apply(sp.features()) + ", label=" + sp.doubleLabel() + "]");
        assert mdl.apply(sp.features()) == sp.doubleLabel();
    });
}

Example 5 with DecisionTreeModel

use of org.apache.ignite.ml.trees.models.DecisionTreeModel in project ignite by apache.

the class DecisionTreesExample method main.

/**
 * Launches example.
 *
 * @param args Program arguments.
 */
public static void main(String[] args) throws IOException {
    System.out.println(">>> Decision trees example started.");
    String igniteCfgPath;
    CommandLineParser parser = new BasicParser();
    String trainingImagesPath;
    String trainingLabelsPath;
    String testImagesPath;
    String testLabelsPath;
    Map<String, String> mnistPaths = new HashMap<>();
    mnistPaths.put(MNIST_TRAIN_IMAGES, "train-images-idx3-ubyte");
    mnistPaths.put(MNIST_TRAIN_LABELS, "train-labels-idx1-ubyte");
    mnistPaths.put(MNIST_TEST_IMAGES, "t10k-images-idx3-ubyte");
    mnistPaths.put(MNIST_TEST_LABELS, "t10k-labels-idx1-ubyte");
    try {
        // Parse the command line arguments.
        CommandLine line = parser.parse(buildOptions(), args);
        if (line.hasOption(MLExamplesCommonArgs.UNATTENDED)) {
            System.out.println(">>> Skipped example execution because 'unattended' mode is used.");
            System.out.println(">>> Decision trees example finished.");
            return;
        }
        igniteCfgPath = line.getOptionValue(CONFIG, DEFAULT_CONFIG);
    } catch (ParseException e) {
        e.printStackTrace();
        return;
    }
    if (!getMNIST(mnistPaths.values())) {
        System.out.println(">>> You should have MNIST dataset in " + MNIST_DIR + " to run this example.");
        return;
    }
    trainingImagesPath = Objects.requireNonNull(IgniteUtils.resolveIgnitePath(MNIST_DIR + "/" + mnistPaths.get(MNIST_TRAIN_IMAGES))).getPath();
    trainingLabelsPath = Objects.requireNonNull(IgniteUtils.resolveIgnitePath(MNIST_DIR + "/" + mnistPaths.get(MNIST_TRAIN_LABELS))).getPath();
    testImagesPath = Objects.requireNonNull(IgniteUtils.resolveIgnitePath(MNIST_DIR + "/" + mnistPaths.get(MNIST_TEST_IMAGES))).getPath();
    testLabelsPath = Objects.requireNonNull(IgniteUtils.resolveIgnitePath(MNIST_DIR + "/" + mnistPaths.get(MNIST_TEST_LABELS))).getPath();
    try (Ignite ignite = Ignition.start(igniteCfgPath)) {
        IgniteUtils.setCurrentIgniteName(ignite.configuration().getIgniteInstanceName());
        int ptsCnt = 60000;
        int featCnt = 28 * 28;
        Stream<DenseLocalOnHeapVector> trainingMnistStream = MnistUtils.mnist(trainingImagesPath, trainingLabelsPath, new Random(123L), ptsCnt);
        Stream<DenseLocalOnHeapVector> testMnistStream = MnistUtils.mnist(testImagesPath, testLabelsPath, new Random(123L), 10_000);
        IgniteCache<BiIndex, Double> cache = createBiIndexedCache(ignite);
        loadVectorsIntoBiIndexedCache(cache.getName(), trainingMnistStream.iterator(), featCnt + 1, ignite);
        ColumnDecisionTreeTrainer<GiniSplitCalculator.GiniData> trainer = new ColumnDecisionTreeTrainer<>(10, ContinuousSplitCalculators.GINI.apply(ignite), RegionCalculators.GINI, RegionCalculators.MOST_COMMON, ignite);
        System.out.println(">>> Training started");
        long before = System.currentTimeMillis();
        DecisionTreeModel mdl = trainer.train(new BiIndexedCacheColumnDecisionTreeTrainerInput(cache, new HashMap<>(), ptsCnt, featCnt));
        System.out.println(">>> Training finished in " + (System.currentTimeMillis() - before));
        IgniteTriFunction<Model<Vector, Double>, Stream<IgniteBiTuple<Vector, Double>>, Function<Double, Double>, Double> mse = Estimators.errorsPercentage();
        Double accuracy = mse.apply(mdl, testMnistStream.map(v -> new IgniteBiTuple<>(v.viewPart(0, featCnt), v.getX(featCnt))), Function.identity());
        System.out.println(">>> Errs percentage: " + accuracy);
    } catch (IOException e) {
        e.printStackTrace();
    }
    System.out.println(">>> Decision trees example finished.");
}