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/*-
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed 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.nd4j.linalg.api.ops.impl.transforms.comparison;
import org.nd4j.linalg.api.complex.IComplexNumber;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.BaseTransformOp;
import org.nd4j.linalg.api.ops.Op;
import org.nd4j.linalg.indexing.conditions.Condition;
/**
* Element-wise Compare-and-set implementation as Op
*
* Please check javadoc to specific constructors, for detail information.
*
* @author [email protected]
*/
public class CompareAndSet extends BaseTransformOp {
private double compare;
private double set;
private double eps;
private int mode;
public CompareAndSet() {
}
public CompareAndSet(INDArray x, double compare, double set, double eps) {
this(x, compare, set, eps, null);
}
public CompareAndSet(INDArray x, double compare, double set, double eps, Condition condition) {
super(x);
this.compare = compare;
this.set = set;
this.eps = eps;
if (condition == null)
this.mode = 0;
else
this.mode = condition.condtionNum();
init(x, null, x, x.length());
}
/**
* With this constructor, op will check each X element against given Condition, and if condition met, element will be replaced with Set value
*
*
* Pseudocode:
* z[i] = condition(x[i]) ? set : x[i];
*
* PLEASE NOTE: X will be modified inplace.
*
* @param x
* @param set
* @param condition
*/
public CompareAndSet(INDArray x, double set, Condition condition) {
this(x, x, set, condition);
}
/**
* With this constructor, op will check each X element against given Condition, and if condition met, element will be replaced with Set value
*
* Pseudocode:
* z[i] = condition(x[i]) ? set : x[i];
*
* @param x
* @param set
* @param condition
*/
public CompareAndSet(INDArray x, INDArray z, double set, Condition condition) {
super(x, null, z, x.lengthLong());
this.compare = condition.getValue();
this.set = set;
this.mode = condition.condtionNum();
init(x, null, z, x.lengthLong());
}
/**
* With this constructor, op will check each Y element against given Condition, and if condition met, element Z will be set to Y value, and X otherwise
*
* PLEASE NOTE: X will be modified inplace.
*
* Pseudocode:
* z[i] = condition(y[i]) ? y[i] : x[i];
*
* @param x
* @param y
* @param condition
*/
public CompareAndSet(INDArray x, INDArray y, Condition condition) {
this(x, y, x, condition);
}
/**
* With this constructor, op will check each Y element against given Condition, and if condition met, element Z will be set to Y value, and X otherwise
*
* Pseudocode:
* z[i] = condition(y[i]) ? y[i] : x[i];
*
* @param x
* @param y
* @param z
* @param condition
*/
public CompareAndSet(INDArray x, INDArray y, INDArray z, Condition condition) {
super(x, y, z, x.lengthLong());
this.compare = condition.getValue();
this.set = 0;
this.mode = condition.condtionNum();
init(x, y, z, x.lengthLong());
}
/**
* This constructor is shortcut to epsEquals.
*
* @param x
* @param z
* @param compare
* @param set
* @param eps
*/
public CompareAndSet(INDArray x, INDArray z, double compare, double set, double eps) {
super(x, z);
this.compare = compare;
this.set = set;
this.eps = eps;
this.mode = 0;
init(x, null, z, x.length());
}
/**
* This constructor is shortcut to epsEquals.
*
* @param x
* @param z
* @param compare
* @param set
* @param eps
*/
public CompareAndSet(INDArray x, INDArray z, double compare, double set, double eps, long n) {
super(x, z, n);
this.compare = compare;
this.set = set;
this.eps = eps;
this.mode = 0;
init(x, null, x, n);
}
@Override
public int opNum() {
return 45;
}
@Override
public String name() {
return "cas";
}
@Override
public IComplexNumber op(IComplexNumber origin, double other) {
return null;
}
@Override
public IComplexNumber op(IComplexNumber origin, float other) {
return null;
}
@Override
public IComplexNumber op(IComplexNumber origin, IComplexNumber other) {
return null;
}
@Override
public float op(float origin, float other) {
return 0;
}
@Override
public double op(double origin, double other) {
return 0;
}
@Override
public double op(double origin) {
return 0;
}
@Override
public float op(float origin) {
return 0;
}
@Override
public IComplexNumber op(IComplexNumber origin) {
return null;
}
@Override
public Op opForDimension(int index, int dimension) {
INDArray xAlongDimension = x.vectorAlongDimension(index, dimension);
if (y() != null)
return new CompareAndSet(xAlongDimension, z.vectorAlongDimension(index, dimension), compare, set, eps,
xAlongDimension.length());
else
return new CompareAndSet(xAlongDimension, z.vectorAlongDimension(index, dimension), compare, set, eps,
xAlongDimension.length());
}
@Override
public Op opForDimension(int index, int... dimension) {
INDArray xAlongDimension = x.tensorAlongDimension(index, dimension);
if (y() != null)
return new CompareAndSet(xAlongDimension, z.tensorAlongDimension(index, dimension), compare, set, eps,
xAlongDimension.length());
else
return new CompareAndSet(xAlongDimension, z.tensorAlongDimension(index, dimension), compare, set, eps,
xAlongDimension.length());
}
@Override
public void init(INDArray x, INDArray y, INDArray z, long n) {
super.init(x, y, z, n);
this.extraArgs = new Object[] {compare, set, eps, (double) mode};
}
}
