Different Transfer Functions for Binary Particle Swarm Optimization with a New Encoding Scheme for Discounted {0-1} Knapsack Problem

Figure 2

Convergence curve of (a) IDKP1, (b) IDKP10, (c) UDKP1, (d) UDKP10, (e) WDKP1, (f) WDKP10, (g) SDKP1, and (h) SDKP10.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)