The performance of firefly algorithm is affected by the values of α, γ and β parameters. The value of α varies from 0 to 1. Its value is generated randomly between 0 and 1 which adds randomness to the algorithm. The value of γ can vary from [0 . If γ is considered 0 that means the attractiveness is constant between fireflies and there is no movement of fireflies which may give single optimum local maxima. If γ=∞ then there is no attraction i.e. sight of other fireflies is short-sighted with respect to other fireflies which leads each firefly to roam in a completely random way [19-21]. To avoid this, value of γ is varied between 0.01 and 100 in an iterative manner which finally results γ=1 while β0 is taken as 1. In this paper, α is varied as number of iterations increases as in PSO [32-33].