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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.instructions.cp;
import org.apache.sysml.parser.Expression.DataType;
import org.apache.sysml.parser.Expression.ValueType;
import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.DMLUnsupportedOperationException;
import org.apache.sysml.runtime.controlprogram.context.ExecutionContext;
import org.apache.sysml.runtime.functionobjects.COV;
import org.apache.sysml.runtime.instructions.InstructionUtils;
import org.apache.sysml.runtime.matrix.data.MatrixBlock;
import org.apache.sysml.runtime.matrix.operators.COVOperator;
import org.apache.sysml.runtime.matrix.operators.Operator;
public class CovarianceCPInstruction extends BinaryCPInstruction
{
public CovarianceCPInstruction(Operator op, CPOperand in1, CPOperand in2, CPOperand out, String opcode, String istr )
{
super(op, in1, in2, out, opcode, istr);
_cptype = CPINSTRUCTION_TYPE.AggregateBinary;
}
public CovarianceCPInstruction(Operator op, CPOperand in1, CPOperand in2, CPOperand in3, CPOperand out,
String opcode, String istr )
{
super(op, in1, in2, in3, out, opcode, istr);
_cptype = CPINSTRUCTION_TYPE.AggregateBinary;
}
/**
*
* @param str
* @return
* @throws DMLRuntimeException
*/
public static CovarianceCPInstruction parseInstruction( String str )
throws DMLRuntimeException
{
CPOperand in1 = new CPOperand("", ValueType.UNKNOWN, DataType.UNKNOWN);
CPOperand in2 = new CPOperand("", ValueType.UNKNOWN, DataType.UNKNOWN);
CPOperand in3 = null;
CPOperand out = new CPOperand("", ValueType.UNKNOWN, DataType.UNKNOWN);
String[] parts = InstructionUtils.getInstructionPartsWithValueType(str);
String opcode = parts[0];
if( !opcode.equalsIgnoreCase("cov") ) {
throw new DMLRuntimeException("CovarianceCPInstruction.parseInstruction():: Unknown opcode " + opcode);
}
COVOperator cov = new COVOperator(COV.getCOMFnObject());
if ( parts.length == 4 ) {
// CP.cov.mVar0.mVar1.mVar2
parseBinaryInstruction(str, in1, in2, out);
return new CovarianceCPInstruction(cov, in1, in2, out, opcode, str);
} else if ( parts.length == 5 ) {
// CP.cov.mVar0.mVar1.mVar2.mVar3
in3 = new CPOperand("", ValueType.UNKNOWN, DataType.UNKNOWN);
parseBinaryInstruction(str, in1, in2, in3, out);
return new CovarianceCPInstruction(cov, in1, in2, in3, out, opcode, str);
}
else {
throw new DMLRuntimeException("Invalid number of arguments in Instruction: " + str);
}
}
@Override
public void processInstruction(ExecutionContext ec)
throws DMLRuntimeException, DMLUnsupportedOperationException
{
MatrixBlock matBlock1 = ec.getMatrixInput(input1.getName());
MatrixBlock matBlock2 = ec.getMatrixInput(input2.getName());
String output_name = output.getName();
COVOperator cov_op = (COVOperator)_optr;
CM_COV_Object covobj = new CM_COV_Object();
if ( input3 == null )
{
// Unweighted: cov.mvar0.mvar1.out
covobj = matBlock1.covOperations(cov_op, matBlock2);
ec.releaseMatrixInput(input1.getName());
ec.releaseMatrixInput(input2.getName());
}
else
{
// Weighted: cov.mvar0.mvar1.weights.out
MatrixBlock wtBlock = ec.getMatrixInput(input3.getName());
covobj = matBlock1.covOperations(cov_op, matBlock2, wtBlock);
ec.releaseMatrixInput(input1.getName());
ec.releaseMatrixInput(input2.getName());
ec.releaseMatrixInput(input3.getName());
}
double val = covobj.getRequiredResult(_optr);
DoubleObject ret = new DoubleObject(output_name, val);
ec.setScalarOutput(output_name, ret);
}
}