What is Pbest and Gbest in PSO?

What is Pbest and Gbest in PSO?

Each particle have to maintain its positions pbest known as local best position and the Gbest known as global best position among all the particles. Following equations are used to update the position and velocity of the particle.

What is PSO methodology?

PSO is a stochastic optimization technique based on the movement and intelligence of swarms. In PSO, the concept of social interaction is used for solving a problem. It uses a number of particles (agents) that constitute a swarm moving around in the search space, looking for the best solution.

What is acceleration coefficient in PSO?

Abstract: Acceleration coefficients are the key parameters of particle swarm optimization (PSO) algorithm used to control the movement of particles by modifying its cognitive and social components.

What is Firefly algorithm used for?

The firefly algorithm, in particular, is applied for solving continuous and discrete optimization problems. In order to tackle different optimization problems efficiently and fast, many variants of the firefly algorithm have recently been developed.

Which is better PSO or GA?

The results of GA and PSO implementation in the bus timetabling problem show that the PSO algorithm is superior in finding the optimal solution in terms of accuracy and iteration.

What are the advantages of PSO?

The main advantages of the PSO algorithm are summarized as: simple concept, easy implementation, robustness to control parameters, and computational efficiency when compared with mathematical algorithm and other heuristic optimization techniques. maximum iteration number, Iter current iteration number.

What is PSO inertia weight?

The Inertia Weight determines the contribution rate of a particle’s previous velocity to its velocity at the current time step. The basic PSO, presented by Eberhart and Kennedy in 1995 [1], has no Inertia Weight.

What are three idealized rules for cuckoo’s algorithm?

For simplicity in describing our new Cuckoo Search, we now use the following three idealized rules: 1) Each cuckoo lays one egg at a time, and dump its egg in randomly chosen nest; 2) The best nests with high quality of eggs will carry over to the next generations; 3) The number of available host nests is fixed, and …

What are the advantages of Firefly algorithm?

Firefly algorithm is efficient and an easy-to-implement algorithm. It is also suitable for parallel implementation. However, researches show that it is slow in convergence and easily gets trapped in local optimum for multimodal problems.