Firefly algorithm: Difference between revisions

Revision as of 00:16, 8 January 2016

Revision as of 00:18, 8 January 2016

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'''Begin'''

1) Objective function: {{nowrap|<math>f(\mathbf{x}), \quad \mathbf{x}=(x_1,x_2,...,x_d) </math>;}}

2) Generate an initial population of fireflies {{nowrap|<math> \mathbf{x}_i \quad (i=1,2,\dots,n)</math>;.}}

3) Formulate light intensity <math>{{mvar|I</math>}} so that it is associated with {{nowrap|<math>f(\mathbf{x})</math>}}

(for example, for maximization problems, {{nowrap|<math>I \propto f(\mathbf{x})</math> or simply <math>I=f(\mathbf{x})</math>;)}}

4) Define absorption coefficient <math>\{{mvar|&gamma </math>;}}

'''While''' (t < MaxGeneration)

'''for''' i = 1 : n (all n fireflies)

'''for''' j = 1 : n (n fireflies)

{{nowrap|'''if''' (<math>I_j>I_i </math>), }}

move firefly i towards j;

Vary attractiveness with distance r via {{nowrap|<math> \exp(-\gamma \; r) </math>;}}

Evaluate new solutions and update light intensity;

'''end if'''