Design of Digital IIR Filter with Conflicting Objectives Using Hybrid Gravitational Search Algorithm

Algorithm 1

Hybrid GSA.

(1) Search space identification.

(2) Randomized initialization of population.

(3) Fitness evaluation of objects using (17).

WHILE (stopping criterion is not met).

(4) Update , , and ().

(5) Calculation of the total force in different directions using (23).

(6) Calculation of acceleration and velocity using (24) and (25) respectively.

(7) Updating objects’ position using (26).

(8) Fitness evaluation of objects using (17).

(9) Apply exploratory move to improve the fitness value using Algorithm 2.

ENDDO

STOP.