Examples with Feature org.jpmml.converter.Feature used on opensource projects

Example 26 with Feature

use of org.jpmml.converter.Feature in project jpmml-r by jpmml.

the class GBMConverter method encodeNode.

private void encodeNode(Node node, int i, RGenericVector tree, RGenericVector c_splits, Schema schema) {
    RIntegerVector splitVar = (RIntegerVector) tree.getValue(0);
    RDoubleVector splitCodePred = (RDoubleVector) tree.getValue(1);
    RIntegerVector leftNode = (RIntegerVector) tree.getValue(2);
    RIntegerVector rightNode = (RIntegerVector) tree.getValue(3);
    RIntegerVector missingNode = (RIntegerVector) tree.getValue(4);
    RDoubleVector prediction = (RDoubleVector) tree.getValue(7);
    Predicate missingPredicate;
    Predicate leftPredicate;
    Predicate rightPredicate;
    Integer var = splitVar.getValue(i);
    if (var != -1) {
        Feature feature = schema.getFeature(var);
        missingPredicate = createSimplePredicate(feature, SimplePredicate.Operator.IS_MISSING, null);
        Double split = splitCodePred.getValue(i);
        if (feature instanceof CategoricalFeature) {
            CategoricalFeature categoricalFeature = (CategoricalFeature) feature;
            List<String> values = categoricalFeature.getValues();
            int index = ValueUtil.asInt(split);
            RIntegerVector c_split = (RIntegerVector) c_splits.getValue(index);
            List<Integer> splitValues = c_split.getValues();
            leftPredicate = createSimpleSetPredicate(categoricalFeature, selectValues(values, splitValues, true));
            rightPredicate = createSimpleSetPredicate(categoricalFeature, selectValues(values, splitValues, false));
        } else {
            ContinuousFeature continuousFeature = feature.toContinuousFeature();
            String value = ValueUtil.formatValue(split);
            leftPredicate = createSimplePredicate(continuousFeature, SimplePredicate.Operator.LESS_THAN, value);
            rightPredicate = createSimplePredicate(continuousFeature, SimplePredicate.Operator.GREATER_OR_EQUAL, value);
        }
    } else {
        Double value = prediction.getValue(i);
        node.setScore(ValueUtil.formatValue(value));
        return;
    }
    Integer missing = missingNode.getValue(i);
    if (missing != -1) {
        Node missingChild = new Node().setId(String.valueOf(missing + 1)).setPredicate(missingPredicate);
        encodeNode(missingChild, missing, tree, c_splits, schema);
        node.addNodes(missingChild);
    }
    Integer left = leftNode.getValue(i);
    if (left != -1) {
        Node leftChild = new Node().setId(String.valueOf(left + 1)).setPredicate(leftPredicate);
        encodeNode(leftChild, left, tree, c_splits, schema);
        node.addNodes(leftChild);
    }
    Integer right = rightNode.getValue(i);
    if (right != -1) {
        Node rightChild = new Node().setId(String.valueOf(right + 1)).setPredicate(rightPredicate);
        encodeNode(rightChild, right, tree, c_splits, schema);
        node.addNodes(rightChild);
    }
}

Example 27 with Feature

use of org.jpmml.converter.Feature in project jpmml-r by jpmml.

the class BinaryTreeConverter method encodeNode.

private void encodeNode(Node node, RGenericVector tree, Schema schema) {
    RIntegerVector nodeId = (RIntegerVector) tree.getValue("nodeID");
    RBooleanVector terminal = (RBooleanVector) tree.getValue("terminal");
    RGenericVector psplit = (RGenericVector) tree.getValue("psplit");
    RGenericVector ssplits = (RGenericVector) tree.getValue("ssplits");
    RDoubleVector prediction = (RDoubleVector) tree.getValue("prediction");
    RGenericVector left = (RGenericVector) tree.getValue("left");
    RGenericVector right = (RGenericVector) tree.getValue("right");
    node.setId(String.valueOf(nodeId.asScalar()));
    if ((Boolean.TRUE).equals(terminal.asScalar())) {
        node = encodeScore(node, prediction, schema);
        return;
    }
    RNumberVector<?> splitpoint = (RNumberVector<?>) psplit.getValue("splitpoint");
    RStringVector variableName = (RStringVector) psplit.getValue("variableName");
    if (ssplits.size() > 0) {
        throw new IllegalArgumentException();
    }
    Predicate leftPredicate;
    Predicate rightPredicate;
    FieldName name = FieldName.create(variableName.asScalar());
    Integer index = this.featureIndexes.get(name);
    if (index == null) {
        throw new IllegalArgumentException();
    }
    Feature feature = schema.getFeature(index);
    if (feature instanceof CategoricalFeature) {
        CategoricalFeature categoricalFeature = (CategoricalFeature) feature;
        List<String> values = categoricalFeature.getValues();
        List<Integer> splitValues = (List<Integer>) splitpoint.getValues();
        leftPredicate = createSimpleSetPredicate(categoricalFeature, selectValues(values, splitValues, true));
        rightPredicate = createSimpleSetPredicate(categoricalFeature, selectValues(values, splitValues, false));
    } else {
        ContinuousFeature continuousFeature = feature.toContinuousFeature();
        String value = ValueUtil.formatValue((Double) splitpoint.asScalar());
        leftPredicate = createSimplePredicate(continuousFeature, SimplePredicate.Operator.LESS_OR_EQUAL, value);
        rightPredicate = createSimplePredicate(continuousFeature, SimplePredicate.Operator.GREATER_THAN, value);
    }
    Node leftChild = new Node().setPredicate(leftPredicate);
    encodeNode(leftChild, left, schema);
    Node rightChild = new Node().setPredicate(rightPredicate);
    encodeNode(rightChild, right, schema);
    node.addNodes(leftChild, rightChild);
}

Example 28 with Feature

use of org.jpmml.converter.Feature in project jpmml-r by jpmml.

the class EarthConverter method encodeSchema.

@Override
public void encodeSchema(RExpEncoder encoder) {
    RGenericVector earth = getObject();
    RDoubleVector dirs = (RDoubleVector) earth.getValue("dirs");
    RDoubleVector cuts = (RDoubleVector) earth.getValue("cuts");
    RDoubleVector selectedTerms = (RDoubleVector) earth.getValue("selected.terms");
    RDoubleVector coefficients = (RDoubleVector) earth.getValue("coefficients");
    RExp terms = earth.getValue("terms");
    final RGenericVector xlevels;
    try {
        xlevels = (RGenericVector) earth.getValue("xlevels");
    } catch (IllegalArgumentException iae) {
        throw new IllegalArgumentException("No variable levels information. Please initialize the \'xlevels\' element", iae);
    }
    RStringVector dirsRows = dirs.dimnames(0);
    RStringVector dirsColumns = dirs.dimnames(1);
    RStringVector cutsRows = cuts.dimnames(0);
    RStringVector cutsColumns = cuts.dimnames(1);
    if (!(dirsRows.getValues()).equals(cutsRows.getValues()) || !(dirsColumns.getValues()).equals(cutsColumns.getValues())) {
        throw new IllegalArgumentException();
    }
    int rows = dirsRows.size();
    int columns = dirsColumns.size();
    List<String> predictorNames = dirsColumns.getValues();
    FormulaContext context = new FormulaContext() {

        @Override
        public List<String> getCategories(String variable) {
            if (xlevels.hasValue(variable)) {
                RStringVector levels = (RStringVector) xlevels.getValue(variable);
                return levels.getValues();
            }
            return null;
        }

        @Override
        public RGenericVector getData() {
            return null;
        }
    };
    Formula formula = FormulaUtil.createFormula(terms, context, encoder);
    // Dependent variable
    {
        RStringVector yNames = coefficients.dimnames(1);
        FieldName name = FieldName.create(yNames.asScalar());
        DataField dataField = (DataField) encoder.getField(name);
        encoder.setLabel(dataField);
    }
    // Independent variables
    for (int i = 1; i < selectedTerms.size(); i++) {
        int termIndex = ValueUtil.asInt(selectedTerms.getValue(i)) - 1;
        List<Double> dirsRow = FortranMatrixUtil.getRow(dirs.getValues(), rows, columns, termIndex);
        List<Double> cutsRow = FortranMatrixUtil.getRow(cuts.getValues(), rows, columns, termIndex);
        List<Feature> features = new ArrayList<>();
        predictors: for (int j = 0; j < predictorNames.size(); j++) {
            String predictorName = predictorNames.get(j);
            int dir = ValueUtil.asInt(dirsRow.get(j));
            double cut = cutsRow.get(j);
            if (dir == 0) {
                continue predictors;
            }
            Feature feature = formula.resolveFeature(predictorName);
            switch(dir) {
                case -1:
                case 1:
                    {
                        feature = feature.toContinuousFeature();
                        FieldName name = FieldName.create(formatHingeFunction(dir, feature, cut));
                        DerivedField derivedField = encoder.getDerivedField(name);
                        if (derivedField == null) {
                            Apply apply = createHingeFunction(dir, feature, cut);
                            derivedField = encoder.createDerivedField(name, OpType.CONTINUOUS, DataType.DOUBLE, apply);
                        }
                        feature = new ContinuousFeature(encoder, derivedField);
                    }
                    break;
                case 2:
                    break;
                default:
                    throw new IllegalArgumentException();
            }
            features.add(feature);
        }
        Feature feature;
        if (features.size() == 1) {
            feature = features.get(0);
        } else if (features.size() > 1) {
            feature = new InteractionFeature(encoder, FieldName.create(dirsRows.getValue(i)), DataType.DOUBLE, features);
        } else {
            throw new IllegalArgumentException();
        }
        encoder.addFeature(feature);
    }
}

Example 29 with Feature

use of org.jpmml.converter.Feature in project jpmml-r by jpmml.

the class Formula method addField.

public void addField(Field<?> field) {
    RExpEncoder encoder = getEncoder();
    Feature feature = new ContinuousFeature(encoder, field);
    if (field instanceof DerivedField) {
        DerivedField derivedField = (DerivedField) field;
        Expression expression = derivedField.getExpression();
        if (expression instanceof Apply) {
            Apply apply = (Apply) expression;
            if (checkApply(apply, "pow", FieldRef.class, Constant.class)) {
                List<Expression> expressions = apply.getExpressions();
                FieldRef fieldRef = (FieldRef) expressions.get(0);
                Constant constant = (Constant) expressions.get(1);
                try {
                    int power = Integer.parseInt(constant.getValue());
                    feature = new PowerFeature(encoder, fieldRef.getField(), DataType.DOUBLE, power);
                } catch (NumberFormatException nfe) {
                // Ignored
                }
            }
        }
    }
    putFeature(field.getName(), feature);
    this.fields.add(field);
}

Example 30 with Feature

use of org.jpmml.converter.Feature in project jpmml-r by jpmml.

the class Formula method getCoefficient.

public Double getCoefficient(Feature feature, RDoubleVector coefficients) {
    FieldName name = feature.getName();
    if (feature instanceof HasDerivedName) {
        BiMap<Feature, FieldName> inverseFeatures = this.features.inverse();
        name = inverseFeatures.get(feature);
    }
    return coefficients.getValue(name.getValue());
}