Examples with PMMLPredicate org.knime.base.node.mine.decisiontree2.PMMLPredicate used on opensource projects

Example 11 with PMMLPredicate

use of org.knime.base.node.mine.decisiontree2.PMMLPredicate in project knime-core by knime.

the class TreeModelPMMLTranslator method setValuesFromPMMLCompoundPredicate.

private static void setValuesFromPMMLCompoundPredicate(final CompoundPredicate to, final PMMLCompoundPredicate from) {
    final PMMLBooleanOperator boolOp = from.getBooleanOperator();
    switch(boolOp) {
        case AND:
            to.setBooleanOperator(CompoundPredicate.BooleanOperator.AND);
            break;
        case OR:
            to.setBooleanOperator(CompoundPredicate.BooleanOperator.OR);
            break;
        case SURROGATE:
            to.setBooleanOperator(CompoundPredicate.BooleanOperator.SURROGATE);
            break;
        case XOR:
            to.setBooleanOperator(CompoundPredicate.BooleanOperator.XOR);
            break;
        default:
            throw new IllegalStateException("Unknown boolean predicate \"" + boolOp + "\".");
    }
    final List<PMMLPredicate> predicates = from.getPredicates();
    for (final PMMLPredicate predicate : predicates) {
        if (predicate instanceof PMMLSimplePredicate) {
            setValuesFromPMMLSimplePredicate(to.addNewSimplePredicate(), (PMMLSimplePredicate) predicate);
        } else if (predicate instanceof PMMLSimpleSetPredicate) {
            setValuesFromPMMLSimpleSetPredicate(to.addNewSimpleSetPredicate(), (PMMLSimpleSetPredicate) predicate);
        } else if (predicate instanceof PMMLTruePredicate) {
            to.addNewTrue();
        } else if (predicate instanceof PMMLFalsePredicate) {
            to.addNewFalse();
        } else if (predicate instanceof PMMLCompoundPredicate) {
            final CompoundPredicate compound = to.addNewCompoundPredicate();
            final PMMLCompoundPredicate knimeCompound = (PMMLCompoundPredicate) predicate;
            setValuesFromPMMLCompoundPredicate(compound, knimeCompound);
        } else {
            throw new IllegalStateException("Unknown predicate type \"" + predicate + "\".");
        }
    }
}

Example 12 with PMMLPredicate

use of org.knime.base.node.mine.decisiontree2.PMMLPredicate in project knime-core by knime.

the class TreeNodeNominalBinaryConditionTest method testToPMMLPredicate.

/**
 * This method tests the
 * {@link TreeNodeNominalBinaryCondition#toPMMLPredicate()} method.
 *
 * @throws Exception
 */
@Test
public void testToPMMLPredicate() throws Exception {
    final TreeEnsembleLearnerConfiguration config = new TreeEnsembleLearnerConfiguration(false);
    final TestDataGenerator dataGen = new TestDataGenerator(config);
    final TreeNominalColumnData col = dataGen.createNominalAttributeColumn("A,A,B,C,C,D", "testcol", 0);
    TreeNodeNominalBinaryCondition cond = new TreeNodeNominalBinaryCondition(col.getMetaData(), BigInteger.valueOf(1), true, false);
    PMMLPredicate predicate = cond.toPMMLPredicate();
    assertThat(predicate, instanceOf(PMMLSimpleSetPredicate.class));
    PMMLSimpleSetPredicate setPredicate = (PMMLSimpleSetPredicate) predicate;
    assertEquals("Wrong attribute", col.getMetaData().getAttributeName(), setPredicate.getSplitAttribute());
    assertEquals("Wrong set predicate", PMMLSetOperator.IS_IN, setPredicate.getSetOperator());
    assertArrayEquals("Wrong values", new String[] { "A" }, setPredicate.getValues().toArray(new String[1]));
    cond = new TreeNodeNominalBinaryCondition(col.getMetaData(), BigInteger.valueOf(2), false, true);
    predicate = cond.toPMMLPredicate();
    assertEquals("Wrong attribute", col.getMetaData().getAttributeName(), predicate.getSplitAttribute());
    assertThat(predicate, instanceOf(PMMLCompoundPredicate.class));
    PMMLCompoundPredicate compoundPredicate = (PMMLCompoundPredicate) predicate;
    assertEquals("Wrong boolean operator", PMMLBooleanOperator.OR, compoundPredicate.getBooleanOperator());
    LinkedList<PMMLPredicate> preds = compoundPredicate.getPredicates();
    assertEquals("Number of predicates did not match.", 2, preds.size());
    assertThat(preds.get(0), instanceOf(PMMLSimpleSetPredicate.class));
    setPredicate = (PMMLSimpleSetPredicate) preds.get(0);
    assertEquals("Wrong attribute", col.getMetaData().getAttributeName(), setPredicate.getSplitAttribute());
    assertEquals("Wrong set predicate", PMMLSetOperator.IS_NOT_IN, setPredicate.getSetOperator());
    assertArrayEquals("Wrong values", new String[] { "B" }, setPredicate.getValues().toArray(new String[1]));
    assertThat(preds.get(1), instanceOf(PMMLSimplePredicate.class));
    PMMLSimplePredicate simplePredicate = (PMMLSimplePredicate) preds.get(1);
    assertEquals("Should be isMissing", PMMLOperator.IS_MISSING, simplePredicate.getOperator());
}

Example 13 with PMMLPredicate

use of org.knime.base.node.mine.decisiontree2.PMMLPredicate in project knime-core by knime.

the class PMMLDecisionTreeTranslator method addTreeNode.

/**
 * A recursive function which converts each KNIME Tree node to a
 * corresponding PMML element.
 *
 * @param pmmlNode the desired PMML element
 * @param node A KNIME DecisionTree node
 */
private static void addTreeNode(final NodeDocument.Node pmmlNode, final DecisionTreeNode node, final DerivedFieldMapper mapper) {
    pmmlNode.setId(String.valueOf(node.getOwnIndex()));
    pmmlNode.setScore(node.getMajorityClass().toString());
    // read in and then exported again
    if (node.getEntireClassCount() > 0) {
        pmmlNode.setRecordCount(node.getEntireClassCount());
    }
    if (node instanceof DecisionTreeNodeSplitPMML) {
        int defaultChild = ((DecisionTreeNodeSplitPMML) node).getDefaultChildIndex();
        if (defaultChild > -1) {
            pmmlNode.setDefaultChild(String.valueOf(defaultChild));
        }
    }
    // adding score and stuff from parent
    DecisionTreeNode parent = node.getParent();
    if (parent == null) {
        // When the parent is null, it is the root Node.
        // For root node, the predicate is always True.
        pmmlNode.addNewTrue();
    } else if (parent instanceof DecisionTreeNodeSplitContinuous) {
        // SimplePredicate case
        DecisionTreeNodeSplitContinuous splitNode = (DecisionTreeNodeSplitContinuous) parent;
        if (splitNode.getIndex(node) == 0) {
            SimplePredicate pmmlSimplePredicate = pmmlNode.addNewSimplePredicate();
            pmmlSimplePredicate.setField(mapper.getDerivedFieldName(splitNode.getSplitAttr()));
            pmmlSimplePredicate.setOperator(Operator.LESS_OR_EQUAL);
            pmmlSimplePredicate.setValue(String.valueOf(splitNode.getThreshold()));
        } else if (splitNode.getIndex(node) == 1) {
            pmmlNode.addNewTrue();
        }
    } else if (parent instanceof DecisionTreeNodeSplitNominalBinary) {
        // SimpleSetPredicate case
        DecisionTreeNodeSplitNominalBinary splitNode = (DecisionTreeNodeSplitNominalBinary) parent;
        SimpleSetPredicate pmmlSimpleSetPredicate = pmmlNode.addNewSimpleSetPredicate();
        pmmlSimpleSetPredicate.setField(mapper.getDerivedFieldName(splitNode.getSplitAttr()));
        pmmlSimpleSetPredicate.setBooleanOperator(SimpleSetPredicate.BooleanOperator.IS_IN);
        ArrayType pmmlArray = pmmlSimpleSetPredicate.addNewArray();
        pmmlArray.setType(ArrayType.Type.STRING);
        DataCell[] splitValues = splitNode.getSplitValues();
        List<Integer> indices = null;
        if (splitNode.getIndex(node) == SplitNominalBinary.LEFT_PARTITION) {
            indices = splitNode.getLeftChildIndices();
        } else if (splitNode.getIndex(node) == SplitNominalBinary.RIGHT_PARTITION) {
            indices = splitNode.getRightChildIndices();
        } else {
            throw new IllegalArgumentException("Split node is neither " + "contained in the right nor in the left partition.");
        }
        StringBuilder classSet = new StringBuilder();
        for (Integer i : indices) {
            if (classSet.length() > 0) {
                classSet.append(" ");
            }
            classSet.append(splitValues[i].toString());
        }
        pmmlArray.setN(BigInteger.valueOf(indices.size()));
        XmlCursor xmlCursor = pmmlArray.newCursor();
        xmlCursor.setTextValue(classSet.toString());
        xmlCursor.dispose();
    } else if (parent instanceof DecisionTreeNodeSplitNominal) {
        DecisionTreeNodeSplitNominal splitNode = (DecisionTreeNodeSplitNominal) parent;
        SimplePredicate pmmlSimplePredicate = pmmlNode.addNewSimplePredicate();
        pmmlSimplePredicate.setField(mapper.getDerivedFieldName(splitNode.getSplitAttr()));
        pmmlSimplePredicate.setOperator(Operator.EQUAL);
        int nodeIndex = parent.getIndex(node);
        pmmlSimplePredicate.setValue(String.valueOf(splitNode.getSplitValues()[nodeIndex].toString()));
    } else if (parent instanceof DecisionTreeNodeSplitPMML) {
        DecisionTreeNodeSplitPMML splitNode = (DecisionTreeNodeSplitPMML) parent;
        int nodeIndex = parent.getIndex(node);
        // get the PMML predicate of the current node from its parent
        PMMLPredicate predicate = splitNode.getSplitPred()[nodeIndex];
        if (predicate instanceof PMMLCompoundPredicate) {
            // surrogates as used in GBT
            exportCompoundPredicate(pmmlNode, (PMMLCompoundPredicate) predicate, mapper);
        } else {
            predicate.setSplitAttribute(mapper.getDerivedFieldName(predicate.getSplitAttribute()));
            // delegate the writing to the predicate translator
            PMMLPredicateTranslator.exportTo(predicate, pmmlNode);
        }
    } else {
        throw new IllegalArgumentException("Node Type " + parent.getClass() + " is not supported!");
    }
    // adding score distribution (class counts)
    Set<Entry<DataCell, Double>> classCounts = node.getClassCounts().entrySet();
    Iterator<Entry<DataCell, Double>> iterator = classCounts.iterator();
    while (iterator.hasNext()) {
        Entry<DataCell, Double> entry = iterator.next();
        DataCell cell = entry.getKey();
        Double freq = entry.getValue();
        ScoreDistribution pmmlScoreDist = pmmlNode.addNewScoreDistribution();
        pmmlScoreDist.setValue(cell.toString());
        pmmlScoreDist.setRecordCount(freq);
    }
    // adding children
    if (!(node instanceof DecisionTreeNodeLeaf)) {
        for (int i = 0; i < node.getChildCount(); i++) {
            addTreeNode(pmmlNode.addNewNode(), node.getChildAt(i), mapper);
        }
    }
}

Example 14 with PMMLPredicate

use of org.knime.base.node.mine.decisiontree2.PMMLPredicate in project knime-core by knime.

the class DecisionTreeNodeSplitPMML method getChildUsedNominalSplitAttributeValues.

/**
 * {@inheritDoc}
 */
@Override
protected Pair<String, Set<String>> getChildUsedNominalSplitAttributeValues(final int childIndex) {
    PMMLPredicate pmmlPredicate = m_splitPred[childIndex];
    Set<String> values = pmmlPredicate.getUsedNominalSplitAttributeValues();
    if (values != null) {
        String splitAttribute = pmmlPredicate.getSplitAttribute();
        return new Pair<String, Set<String>>(splitAttribute, values);
    }
    return null;
}

Example 15 with PMMLPredicate

use of org.knime.base.node.mine.decisiontree2.PMMLPredicate in project knime-core by knime.

the class DecisionTreeNodeSplitPMML method retainOnlyAttributeValuesInChild.

/**
 * {@inheritDoc}
 */
@Override
protected void retainOnlyAttributeValuesInChild(final int childIndex, final Set<String> toBeRetained) {
    PMMLPredicate pmmlPredicate = m_splitPred[childIndex];
    pmmlPredicate.retainOnlyAttributeValues(toBeRetained);
    // the "prefix" is used in the decision tree view as
    // label for the condition
    getChildAt(childIndex).setPrefix(pmmlPredicate.toString());
}