Examples with DecisionTreeNode org.apache.ignite.ml.tree.DecisionTreeNode used on opensource projects

Example 1 with DecisionTreeNode

use of org.apache.ignite.ml.tree.DecisionTreeNode in project ignite by apache.

the class XGModelVisitor method visitXgModel.

/**
 * {@inheritDoc}
 */
@Override
public XGModelComposition visitXgModel(XGBoostModelParser.XgModelContext ctx) {
    List<DecisionTreeNode> trees = new ArrayList<>();
    Set<String> featureNames = new HashSet<>();
    for (XGBoostModelParser.XgTreeContext treeCtx : ctx.xgTree()) featureNames.addAll(treeDictionaryVisitor.visitXgTree(treeCtx));
    Map<String, Integer> dict = buildDictionary(featureNames);
    XGTreeVisitor treeVisitor = new XGTreeVisitor(dict);
    for (XGBoostModelParser.XgTreeContext treeCtx : ctx.xgTree()) {
        DecisionTreeNode treeNode = treeVisitor.visitXgTree(treeCtx);
        trees.add(treeNode);
    }
    return new XGModelComposition(dict, trees);
}