9 w t w n t w 0 v i t v i t 1

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Unformatted text preview: 1)) € par1cle x1 x2 X  ­2 5 gbest 2 2 pbest € 1 2 Iner1a Weight PSO Linear Increasing Iner1a Weight •  Linear decreasing [Shi and Eberhart,1999] : assign an ini1al large value (w(0)=0.9) and linearly decreased to a small value (w(nt)=0.4), where nt is the number of 1me step, w(t) is the weight at 1me step t •  Assign an ini1al small value (0.4) and linearly increased to a large value (0.9). w ( t ) = ( w ( n t ) − w (0)) € v i ( t ) = ω × v i (t − 1) + c1 × r1 × ( pbest ( t − 1) − x i (t − 1)) + c 2 × r2 × (gbest ( t − 1) − x i (t − 1)) •  0 <= w<=1; •  c1=c2=2.0; 0 ≤ c1r1, c 2 r2 ≤ 2 •  0 <= r1, r2 <= 1; •  Vmax=Xmax; €...
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This document was uploaded on 02/28/2014 for the course CS 6776 at Memorial University.

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