org.jpmml.evaluator.FloatValue Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of pmml-evaluator Show documentation
Show all versions of pmml-evaluator Show documentation
JPMML class model evaluator
/*
* Copyright (c) 2017 Villu Ruusmann
*
* This file is part of JPMML-Evaluator
*
* JPMML-Evaluator is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JPMML-Evaluator is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with JPMML-Evaluator. If not, see {
protected float value = 0f;
@Operation (
value = "${0}"
)
public FloatValue(float value){
this.value = value;
}
@Operation (
value = "${0}"
)
public FloatValue(Number value){
this.value = value.floatValue();
}
@Override
public int compareTo(Value that){
return Float.compare(this.floatValue(), that.floatValue());
}
@Override
public String toString(){
return Float.toString(this.value);
}
@Override
public int hashCode(){
return Float.floatToIntBits(this.value);
}
@Override
public boolean equals(Object object){
if(object instanceof FloatValue){
FloatValue that = (FloatValue)object;
return (Float.floatToIntBits(this.value) == Float.floatToIntBits(that.value));
}
return false;
}
@Override
public FloatValue copy(){
return new FloatValue(this.value);
}
@Override
public FloatValue add(Number value){
this.value += value.floatValue();
return this;
}
@Override
public FloatValue add(Value value){
this.value += value.floatValue();
return this;
}
@Override
public FloatValue add(Number coefficient, Number factor){
this.value += coefficient.floatValue() * factor.floatValue();
return this;
}
@Override
public FloatValue add(Number coefficient, Number firstFactor, Number secondFactor){
this.value += coefficient.floatValue() * firstFactor.floatValue() * secondFactor.floatValue();
return this;
}
@Override
public FloatValue add(Number coefficient, Number... factors){
float value = coefficient.floatValue();
for(int i = 0; i < factors.length; i++){
Number factor = factors[i];
value *= factor.floatValue();
}
this.value += value;
return this;
}
@Override
public FloatValue add(Number coefficient, Number factor, int exponent){
this.value += coefficient.floatValue() * FloatValue.pow(factor.floatValue(), exponent);
return this;
}
@Override
public FloatValue subtract(Number value){
this.value -= value.floatValue();
return this;
}
@Override
public FloatValue subtract(Value value){
this.value -= value.floatValue();
return this;
}
@Override
public FloatValue multiply(Number value){
this.value *= value.floatValue();
return this;
}
@Override
public FloatValue multiply(Value value){
this.value *= value.floatValue();
return this;
}
@Override
public FloatValue multiply(Number factor, Number exponent){
this.value *= FloatValue.pow(factor.floatValue(), exponent.floatValue());
return this;
}
@Override
public FloatValue divide(Number value){
this.value /= value.floatValue();
return this;
}
@Override
public FloatValue divide(Value value){
this.value /= value.floatValue();
return this;
}
@Override
public FloatValue residual(Value value){
this.value = 1f - value.floatValue();
return this;
}
@Override
public FloatValue square(){
this.value *= this.value;
return this;
}
@Override
public FloatValue power(Number value){
this.value = FloatValue.pow(this.value, value.floatValue());
return this;
}
@Override
public FloatValue reciprocal(){
this.value = 1f / this.value;
return this;
}
@Override
public FloatValue elliott(){
this.value /= (1f + Math.abs(this.value));
return this;
}
@Override
public FloatValue exp(){
this.value = FloatValue.exp(this.value);
return this;
}
@Override
public FloatValue ln(){
this.value = (float)Math.log(this.value);
return this;
}
@Override
public FloatValue gauss(){
this.value = FloatValue.exp(-(this.value * this.value));
return this;
}
@Override
public FloatValue inverseLogit(){
this.value = 1f / (1f + FloatValue.exp(-this.value));
return this;
}
@Override
public FloatValue inverseCloglog(){
this.value = 1f - FloatValue.exp(-FloatValue.exp(this.value));
return this;
}
@Override
public FloatValue inverseLoglog(){
this.value = FloatValue.exp(-FloatValue.exp(-this.value));
return this;
}
@Override
public FloatValue inverseLogc(){
this.value = 1f - FloatValue.exp(this.value);
return this;
}
@Override
public FloatValue inverseNegbin(Number value){
this.value = 1f / (value.floatValue() * (FloatValue.exp(-this.value) - 1f));
return this;
}
@Override
public FloatValue inverseOddspower(Number value){
return inverseOddspowerInternal(value.floatValue());
}
private FloatValue inverseOddspowerInternal(float value){
if(value < 0f || value > 0f){
this.value = 1f / (1f + FloatValue.pow(1f + (value * this.value), -(1f / value)));
} else
{
this.value = 1f / (1f + FloatValue.exp(-this.value));
}
return this;
}
@Override
public FloatValue inversePower(Number value){
return inversePowerInternal(value.floatValue());
}
private FloatValue inversePowerInternal(float value){
if(value < 0f || value > 0f){
this.value = FloatValue.pow(this.value, 1f / value);
} else
{
this.value = FloatValue.exp(this.value);
}
return this;
}
@Override
public FloatValue inverseCauchit(){
this.value = 0.5f + (1f / (float)FloatValue.PI) * (float)Math.atan(this.value);
return this;
}
@Override
public FloatValue inverseProbit(){
throw new NotImplementedException();
}
@Override
public FloatValue sin(){
this.value = (float)Math.sin(this.value);
return this;
}
@Override
public FloatValue cos(){
this.value = (float)Math.cos(this.value);
return this;
}
@Override
public FloatValue arctan(){
this.value = (2f * (float)Math.atan(this.value)) / (float)FloatValue.PI;
return this;
}
@Override
public FloatValue tanh(){
this.value = (float)Math.tanh(this.value);
return this;
}
@Override
public FloatValue threshold(Number value){
this.value = (this.value > value.floatValue() ? 1f : 0f);
return this;
}
@Override
public FloatValue relu(){
this.value = Math.max(this.value, 0);
return this;
}
@Override
public FloatValue abs(){
this.value = Math.abs(this.value);
return this;
}
@Override
public FloatValue gaussSim(Number value){
return gaussSimInternal(value.floatValue());
}
private FloatValue gaussSimInternal(float value){
this.value = FloatValue.exp((-(float)Math.log(2f) * this.value * this.value) / (value * value));
return this;
}
@Override
public FloatValue restrict(Number lowValue, Number highValue){
this.value = Math.max(this.value, lowValue.floatValue());
this.value = Math.min(this.value, highValue.floatValue());
return this;
}
@Override
public FloatValue round(){
this.value = Math.round(this.value);
return this;
}
@Override
public FloatValue ceiling(){
this.value = (float)Math.ceil(this.value);
return this;
}
@Override
public FloatValue floor(){
this.value = (float)Math.floor(this.value);
return this;
}
@Override
public FloatValue normalize(Number leftOrig, Number leftNorm, Number rightOrig, Number rightNorm){
return normalizeInternal(leftOrig.floatValue(), leftNorm.floatValue(), rightOrig.floatValue(), rightNorm.floatValue());
}
private FloatValue normalizeInternal(float leftOrig, float leftNorm, float rightOrig, float rightNorm){
this.value = leftNorm + ((this.value - leftOrig) / (rightOrig - leftOrig)) * (rightNorm - leftNorm);
return this;
}
@Override
public FloatValue denormalize(Number leftOrig, Number leftNorm, Number rightOrig, Number rightNorm){
return denormalizeInternal(leftOrig.floatValue(), leftNorm.floatValue(), rightOrig.floatValue(), rightNorm.floatValue());
}
private FloatValue denormalizeInternal(float leftOrig, float leftNorm, float rightOrig, float rightNorm){
this.value = ((this.value - leftNorm) / (rightNorm - leftNorm)) * (rightOrig - leftOrig) + leftOrig;
return this;
}
@Override
public boolean isZero(){
return this.value == 0f;
}
@Override
public boolean isOne(){
return this.value == 1f;
}
@Override
public boolean equals(Number value){
return this.value == value.floatValue();
}
@Override
public int compareTo(Number value){
return Float.compare(this.value, value.floatValue());
}
@Override
public float floatValue(){
return this.value;
}
@Override
public double doubleValue(){
return (double)this.value;
}
@Override
public Float getValue(){
return this.value;
}
/**
*
* Computes exp(float).
*
*
* The function exp(float) can be reasonably emulated as (float)Math#pow(2.7182817d, double).
*
* The constant 2.7182817d has to be hard-coded as double literal, because a float value,
* which could be either hard-coded as float literal or computed as (float)Math#E,
* would be promoted to a double value 2.7182817459106445d (via a widening primitive conversion) by the method invocation expression.
*/
static
public float exp(float value){
return (float)Math.pow(FloatValue.E, value);
}
static
public float pow(float value, float power){
return (float)Math.pow(value, power);
}
public static final double E = 2.7182817d;
public static final double PI = 3.1415927d;
}