Examples with FieldColumnPair org.dmg.pmml.FieldColumnPair used on opensource projects

Example 1 with FieldColumnPair

use of org.dmg.pmml.FieldColumnPair in project jpmml-sparkml by jpmml.

the class VectorIndexerModelConverter method encodeFeatures.

@Override
public List<Feature> encodeFeatures(SparkMLEncoder encoder) {
    VectorIndexerModel transformer = getTransformer();
    List<Feature> features = encoder.getFeatures(transformer.getInputCol());
    int numFeatures = transformer.numFeatures();
    if (numFeatures != features.size()) {
        throw new IllegalArgumentException("Expected " + numFeatures + " features, got " + features.size() + " features");
    }
    Map<Integer, Map<Double, Integer>> categoryMaps = transformer.javaCategoryMaps();
    List<Feature> result = new ArrayList<>();
    for (int i = 0; i < numFeatures; i++) {
        Feature feature = features.get(i);
        Map<Double, Integer> categoryMap = categoryMaps.get(i);
        if (categoryMap != null) {
            List<String> categories = new ArrayList<>();
            List<String> values = new ArrayList<>();
            DocumentBuilder documentBuilder = DOMUtil.createDocumentBuilder();
            InlineTable inlineTable = new InlineTable();
            List<String> columns = Arrays.asList("input", "output");
            List<Map.Entry<Double, Integer>> entries = new ArrayList<>(categoryMap.entrySet());
            Collections.sort(entries, VectorIndexerModelConverter.COMPARATOR);
            for (Map.Entry<Double, Integer> entry : entries) {
                String category = ValueUtil.formatValue(entry.getKey());
                categories.add(category);
                String value = ValueUtil.formatValue(entry.getValue());
                values.add(value);
                Row row = DOMUtil.createRow(documentBuilder, columns, Arrays.asList(category, value));
                inlineTable.addRows(row);
            }
            encoder.toCategorical(feature.getName(), categories);
            MapValues mapValues = new MapValues().addFieldColumnPairs(new FieldColumnPair(feature.getName(), columns.get(0))).setOutputColumn(columns.get(1)).setInlineTable(inlineTable);
            DerivedField derivedField = encoder.createDerivedField(formatName(transformer, i), OpType.CATEGORICAL, DataType.INTEGER, mapValues);
            result.add(new CategoricalFeature(encoder, derivedField, values));
        } else {
            result.add((ContinuousFeature) feature);
        }
    }
    return result;
}

Example 2 with FieldColumnPair

use of org.dmg.pmml.FieldColumnPair in project jpmml-r by jpmml.

the class FormulaUtil method createMapValues.

private static MapValues createMapValues(FieldName name, Map<String, String> mapping, List<String> categories) {
    Set<String> inputs = new LinkedHashSet<>(mapping.keySet());
    Set<String> outputs = new LinkedHashSet<>(mapping.values());
    for (String category : categories) {
        // Assume disjoint input and output value spaces
        if (outputs.contains(category)) {
            continue;
        }
        mapping.put(category, category);
    }
    List<String> columns = Arrays.asList("from", "to");
    InlineTable inlineTable = new InlineTable();
    DocumentBuilder documentBuilder = DOMUtil.createDocumentBuilder();
    Collection<Map.Entry<String, String>> entries = mapping.entrySet();
    for (Map.Entry<String, String> entry : entries) {
        Row row = DOMUtil.createRow(documentBuilder, columns, Arrays.asList(entry.getKey(), entry.getValue()));
        inlineTable.addRows(row);
    }
    MapValues mapValues = new MapValues().addFieldColumnPairs(new FieldColumnPair(name, columns.get(0))).setOutputColumn(columns.get(1)).setInlineTable(inlineTable);
    return mapValues;
}

Example 3 with FieldColumnPair

use of org.dmg.pmml.FieldColumnPair in project jpmml-sparkml by jpmml.

the class ClassificationModelConverter method registerOutputFields.

@Override
public List<OutputField> registerOutputFields(Label label, SparkMLEncoder encoder) {
    T model = getTransformer();
    CategoricalLabel categoricalLabel = (CategoricalLabel) label;
    List<OutputField> result = new ArrayList<>();
    String predictionCol = model.getPredictionCol();
    OutputField pmmlPredictedField = ModelUtil.createPredictedField(FieldName.create("pmml(" + predictionCol + ")"), categoricalLabel.getDataType(), OpType.CATEGORICAL);
    result.add(pmmlPredictedField);
    List<String> categories = new ArrayList<>();
    DocumentBuilder documentBuilder = DOMUtil.createDocumentBuilder();
    InlineTable inlineTable = new InlineTable();
    List<String> columns = Arrays.asList("input", "output");
    for (int i = 0; i < categoricalLabel.size(); i++) {
        String value = categoricalLabel.getValue(i);
        String category = String.valueOf(i);
        categories.add(category);
        Row row = DOMUtil.createRow(documentBuilder, columns, Arrays.asList(value, category));
        inlineTable.addRows(row);
    }
    MapValues mapValues = new MapValues().addFieldColumnPairs(new FieldColumnPair(pmmlPredictedField.getName(), columns.get(0))).setOutputColumn(columns.get(1)).setInlineTable(inlineTable);
    final OutputField predictedField = new OutputField(FieldName.create(predictionCol), DataType.DOUBLE).setOpType(OpType.CATEGORICAL).setResultFeature(ResultFeature.TRANSFORMED_VALUE).setExpression(mapValues);
    result.add(predictedField);
    Feature feature = new CategoricalFeature(encoder, predictedField.getName(), predictedField.getDataType(), categories) {

        @Override
        public ContinuousFeature toContinuousFeature() {
            PMMLEncoder encoder = ensureEncoder();
            return new ContinuousFeature(encoder, getName(), getDataType());
        }
    };
    encoder.putOnlyFeature(predictionCol, feature);
    if (model instanceof HasProbabilityCol) {
        HasProbabilityCol hasProbabilityCol = (HasProbabilityCol) model;
        String probabilityCol = hasProbabilityCol.getProbabilityCol();
        List<Feature> features = new ArrayList<>();
        for (int i = 0; i < categoricalLabel.size(); i++) {
            String value = categoricalLabel.getValue(i);
            OutputField probabilityField = ModelUtil.createProbabilityField(FieldName.create(probabilityCol + "(" + value + ")"), DataType.DOUBLE, value);
            result.add(probabilityField);
            features.add(new ContinuousFeature(encoder, probabilityField.getName(), probabilityField.getDataType()));
        }
        encoder.putFeatures(probabilityCol, features);
    }
    return result;
}