org.apache.sysml.runtime.matrix.data.WeightedCell Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of systemml Show documentation
Show all versions of systemml Show documentation
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.matrix.data;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.matrix.operators.AggregateUnaryOperator;
import org.apache.sysml.runtime.matrix.operators.ReorgOperator;
import org.apache.sysml.runtime.matrix.operators.ScalarOperator;
import org.apache.sysml.runtime.matrix.operators.UnaryOperator;
public class WeightedCell extends MatrixCell
{
private static final long serialVersionUID = -2283995259000895325L;
protected double weight=0;
public String toString()
{
return value+": "+weight;
}
@Override
public void readFields(DataInput in) throws IOException {
value=in.readDouble();
weight=in.readDouble();
}
@Override
public void write(DataOutput out) throws IOException {
out.writeDouble(value);
out.writeDouble(weight);
}
private static WeightedCell checkType(MatrixValue cell)
throws DMLRuntimeException
{
if( cell!=null && !(cell instanceof WeightedCell))
throw new DMLRuntimeException("the Matrix Value is not WeightedCell!");
return (WeightedCell) cell;
}
public void copy(MatrixValue that){
WeightedCell c2;
try {
c2 = checkType(that);
} catch (DMLRuntimeException e) {
throw new RuntimeException(e);
}
value=c2.getValue();
weight=c2.getWeight();
}
@Override
public int compareTo(Object o)
{
if( !(o instanceof WeightedCell) )
return -1;
WeightedCell that=(WeightedCell)o;
if(this.value!=that.value)
return Double.compare(this.value, that.value);
else if(this.weight!=that.weight)
return Double.compare(this.weight, that.weight);
else return 0;
}
@Override
public boolean equals(Object o)
{
if( !(o instanceof WeightedCell) )
return false;
WeightedCell that=(WeightedCell)o;
return (value==that.value && weight==that.weight);
}
@Override
public int hashCode() {
throw new RuntimeException("hashCode() should never be called on instances of this class.");
}
public void setWeight(double w)
{
weight=w;
}
public double getWeight()
{
return weight;
}
public double getValue()
{
return value;
}
@Override
public MatrixValue aggregateUnaryOperations(AggregateUnaryOperator op,
MatrixValue result, int brlen, int bclen,
MatrixIndexes indexesIn) throws DMLRuntimeException {
super.aggregateUnaryOperations(op, result, brlen, bclen, indexesIn);
WeightedCell c3=checkType(result);
c3.setWeight(weight);
return c3;
}
//TODO: how to handle -minus left vs. minus right
public void denseScalarOperationsInPlace(ScalarOperator op)
throws DMLRuntimeException {
value=op.executeScalar(value);
}
@Override
public MatrixValue reorgOperations(ReorgOperator op, MatrixValue result,
int startRow, int startColumn, int length)
throws DMLRuntimeException {
super.reorgOperations(op, result, startRow, startColumn, length);
WeightedCell c3=checkType(result);
c3.setWeight(weight);
return c3;
}
@Override
public MatrixValue scalarOperations(ScalarOperator op, MatrixValue result)
throws DMLRuntimeException
{
WeightedCell c3=checkType(result);
c3.setValue(op.fn.execute(value, op.getConstant()));
c3.setWeight(weight);
return c3;
}
public void sparseScalarOperationsInPlace(ScalarOperator op)
throws DMLRuntimeException {
value=op.executeScalar(value);
}
public void sparseUnaryOperationsInPlace(UnaryOperator op)
throws DMLRuntimeException {
value=op.fn.execute(value);
}
@Override
public MatrixValue unaryOperations(UnaryOperator op, MatrixValue result)
throws DMLRuntimeException {
WeightedCell c3=checkType(result);
c3.setValue(op.fn.execute(value));
c3.setWeight(weight);
return c3;
}
@Override
public void unaryOperationsInPlace(UnaryOperator op)
throws DMLRuntimeException {
value=op.fn.execute(value);
}
}