/*
* Copyright (c) 2013, Søren Atmakuri Davidsen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package fuzzy4j.flc.defuzzify;
import fuzzy4j.flc.Variable;
import fuzzy4j.sets.FuzzyFunction;
import fuzzy4j.sets.PiFunction;
import fuzzy4j.sets.TrapezoidalFunction;
import org.junit.Before;
import org.junit.Test;
import static junit.framework.Assert.assertEquals;
/**
* @author Soren A. Davidsen <soren@atmakuridavidsen.com>
*/
public class MaximumTest {
Maximum impl;
Variable var;
FuzzyFunction set;
@Before
public void setup() {
var = Variable.input("hello").start(0).end(15);
set = new TrapezoidalFunction(0, 5, 10, 15);
}
@Test
public void maxOfMax() throws Exception {
impl = Maximum.maxOfMax();
double res = impl.apply(var, set);
assertEquals(10, res, 0.05);
}
@Test
public void minOfMax() throws Exception {
impl = Maximum.minOfMax();
double res = impl.apply(var, set);
assertEquals(5, res, 0.05);
}
@Test
public void meanOfMax() throws Exception {
impl = Maximum.meanOfMax();
double res = impl.apply(var, set);
assertEquals(7.5, res, 0.05);
}
public void pifunctionExample() {
// this type of function should have only a single max value.
set = new PiFunction(5, 10, 15, 1);
double res1 = Maximum.meanOfMax().apply(var, set);
double res2 = Maximum.minOfMax().apply(var, set);
double res3 = Maximum.maxOfMax().apply(var, set);
assertEquals(10, res1, 0.05);
assertEquals(res1, res2);
assertEquals(res1, res3);
}
}