f6problem.java

来自「连续型粒子群算法的java实现」· Java 代码 · 共 22 行

package mtpso;

/**
* f6问题
*
* @author qingyun yang //[e-mail]
*/
public class F6Problem extends Problem {
	public double evaluate(Particle particle) {
		double num, denom, f6;
		double errorf6;

		num=(Math.sin(Math.sqrt((particle.position[0]*particle.position[0])+(particle.position[1]*particle.position[1]))))  *
			 (Math.sin(Math.sqrt((particle.position[0]*particle.position[0])+(particle.position[1]*particle.position[1])))) - 0.5;
		denom=(1.0 + 0.001 * ((particle.position[0] * particle.position[0]) + (particle.position[1]*particle.position[1]))) *
			(1.0 + 0.001 * ((particle.position[0] * particle.position[0]) + (particle.position[1]*particle.position[1])));
		f6=(double) 0.5 - (num/denom);
		errorf6=1 - f6;
		
		return errorf6;	
	}
}