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Declarative Machine Learning
/*
* 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 org.apache.sysml.runtime.functionobjects;
import org.apache.sysml.runtime.instructions.cp.KahanObject;
import java.io.Serializable;
/**
* Runtime function type to perform the summation of values using
* the Kahan summation algorithm.
*/
public abstract class KahanFunction extends ValueFunction implements Serializable {
private static final long serialVersionUID = -8880016655817461398L;
/**
* Add the given term to the existing sum with a function applied
* using the Kahan summation algorithm.
*
* @param kObj A KahanObject containing the current sum and
* correction factor for the Kahan summation
* algorithm.
* @param in The current term to be added.
*/
public abstract void execute2(KahanObject kObj, double in);
public abstract void execute3(KahanObject kObj, double in, int count);
}