| /* |
| * 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.sysds.lops; |
| |
| import org.apache.sysds.lops.LopProperties.ExecType; |
| import org.apache.sysds.runtime.instructions.InstructionUtils; |
| import org.apache.sysds.common.Types.DataType; |
| import org.apache.sysds.common.Types.ValueType; |
| |
| |
| /** |
| * Lop to perform cross product operation |
| */ |
| public class CentralMoment extends Lop |
| { |
| /** |
| * Constructor to perform central moment. |
| * input1 <- data (weighted or unweighted) |
| * input2 <- order (integer: 0, 2, 3, or 4) |
| * |
| * @param input1 low-level operator 1 |
| * @param input2 low-level operator 2 |
| * @param input3 low-level operator 3 |
| * @param et execution type |
| */ |
| private void init(Lop input1, Lop input2, Lop input3, ExecType et) { |
| addInput(input1); |
| addInput(input2); |
| input1.addOutput(this); |
| input2.addOutput(this); |
| |
| // when executing in CP, this lop takes an optional 3rd input (Weights) |
| if ( input3 != null ) { |
| addInput(input3); |
| input3.addOutput(this); |
| } |
| lps.setProperties(inputs, et); |
| } |
| |
| public CentralMoment(Lop input1, Lop input2, DataType dt, ValueType vt, ExecType et) { |
| this(input1, input2, null, dt, vt, et); |
| } |
| |
| public CentralMoment(Lop input1, Lop input2, Lop input3, DataType dt, ValueType vt, ExecType et) { |
| super(Lop.Type.CentralMoment, dt, vt); |
| init(input1, input2, input3, et); |
| } |
| |
| @Override |
| public String toString() { |
| return "Operation = CentralMoment"; |
| } |
| |
| /** |
| * Function to generate CP centralMoment instruction for weighted operation. |
| * |
| * input1: data |
| * input2: weights |
| * input3: order |
| */ |
| @Override |
| public String getInstructions(String input1, String input2, String input3, String output) { |
| if( input3 == null ) { |
| return InstructionUtils.concatOperands( |
| getExecType().toString(), "cm", |
| getInputs().get(0).prepInputOperand(input1), |
| getInputs().get((input3!=null)?2:1).prepScalarInputOperand(getExecType()), |
| prepOutputOperand(output)); |
| } |
| else { |
| return InstructionUtils.concatOperands( |
| getExecType().toString(), "cm", |
| getInputs().get(0).prepInputOperand(input1), |
| getInputs().get(1).prepInputOperand(input2), |
| getInputs().get((input3!=null)?2:1).prepScalarInputOperand(getExecType()), |
| prepOutputOperand(output)); |
| } |
| } |
| |
| /** |
| * Function to generate CP centralMoment instruction for unweighted operation. |
| * |
| * input1: data |
| * input2: order (not used, and order is derived internally!) |
| */ |
| @Override |
| public String getInstructions(String input1, String input2, String output) { |
| return getInstructions(input1, input2, null, output); |
| } |
| } |