Examples with OptionalDouble java.util.OptionalDouble used on opensource projects

Example 11 with OptionalDouble

use of java.util.OptionalDouble in project knime-core by knime.

the class AbstractRegressionContentParser method createNode.

@Override
public final TreeNodeRegression createNode(final Node node, final TargetColumnHelper<TreeTargetNumericColumnMetaData> targetHelper, final TreeNodeSignature signature, final List<TreeNodeRegression> children) {
    double mean = Double.parseDouble(node.getScore());
    OptionalDouble totalSum = node.getExtensionList().stream().filter(e -> e.getName().equals(TranslationUtil.TOTAL_SUM_KEY)).mapToDouble(e -> Double.parseDouble(e.getValue())).findFirst();
    OptionalDouble sumSquaredDeviation = node.getExtensionList().stream().filter(e -> e.getName().equals(TranslationUtil.SUM_SQUARED_DEVIATION_KEY)).mapToDouble(e -> Double.parseDouble(e.getValue())).findFirst();
    return createNodeInternal(node, targetHelper.getMetaData(), signature, mean, totalSum.orElse(-1), sumSquaredDeviation.orElse(-1), children.toArray(new TreeNodeRegression[children.size()]));
}