InterraterAgreement.java

/* 
	@author Victor Lúcio
	Federal University of São Paulo - ICT/UNIFESP
	"A Classifiers Fusion System Applied to Fenology"

	Multiple Classifier System
	from: Faria, Fabio "A Framework for Pattern Classifier Selection and Fusion", 2014

	Advisors: Jurandy Gomes de Almeida Junior <http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4736755E0>
			  Fabio Augusto Faria <http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4266712J6>
*/

import java.util.*;

public class InterraterAgreement extends AbstractDiversityMeasure{
	
	public InterraterAgreement(){
		super();
	}

	public double measure(ArrayList<Boolean> c1, ArrayList<Boolean> c2){
		double[] v = new double[4];
		v = this.correlation(c1,c2);
		return(2*(v[0]*v[2]-v[1]*v[3])/(((v[0]+v[1])*(v[2]+v[3]))+((v[0]+v[2])*(v[1]+v[3]))));
	}

	public int compare(Double o1, Double o2){ //quanto menor, maior a diversidade
		if(Double.compare(o1, o2) == 1)
			return(-1);
		if(Double.compare(o1, o2) == -1)
			return(1);
		return(0);
	}
}