edu.uci.jforestsx.learning.boosting.LambdaMARTConfig Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package edu.uci.jforestsx.learning.boosting;
import java.util.Map.Entry;
import edu.uci.jforestsx.config.ComponentConfig;
import edu.uci.jforestsx.util.ConfigHolder;
/**
* @author Yasser Ganjisaffar
*/
public class LambdaMARTConfig extends ComponentConfig {
private final static String SIGMOID_BINS = "lambdamart.sigmoid-bins";
public int sigmoidBins = 1000000;
private final static String MAX_DCG_TRUNCATION = "lambdamart.max-dcg-truncation";
public int maxDCGTruncation = 50;
private final static String COST_FUNCTION = "lambdamart.cost-function";
public String costFunction = "cross-entropy";
public void init(ConfigHolder config) {
for (Entry entry : config.getEntries()) {
String key = ((String) entry.getKey()).toLowerCase();
String value = ((String) entry.getValue()).trim();
if (key.equals(SIGMOID_BINS)) {
sigmoidBins = Integer.parseInt(value);
} else if (key.equals(MAX_DCG_TRUNCATION)) {
maxDCGTruncation = Integer.parseInt(value);
} else if (key.equals(COST_FUNCTION)) {
costFunction = value;
}
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(SIGMOID_BINS + ": " + sigmoidBins + "\n");
sb.append(MAX_DCG_TRUNCATION + ": " + maxDCGTruncation + "\n");
sb.append(COST_FUNCTION + ": " + costFunction);
return sb.toString();
}
}