Entropy-Driven Global Best Selection in Particle Swarm Optimization for Many-Objective Software Package Restructuring

Table 2

Difference [rank] values of each variant in terms of the IGD.

Problems	EMPSO	GMPSO	FMPSO	IMPSO	DMPSO	BMPSO	SMPSO	AMPSO	WMPSO
JUnit	+8[1]	+6[2]	+4[3]	−2[5]	+2[4]	−2[5]	−2[5]	−6[8]	−2[5]
DOM 4J	+7[1]	−6[3]	+4[3]	+7[1]	+0[5]	−3[6]	+2[4]	−3[6]	−8[9]
JHotDraw	+5[2]	+8[1]	+2[4]	+5[2]	+0[5]	−3[6]	−7[8]	−3[6]	−7[8]
JDI-Ford	+8[1]	+3[3]	+6[2]	+2[4]	+1[5]	−7[8]	−3[6]	−3[6]	−7[8]
Xerces-J	+6[2]	+4[3]	+8[1]	+2[4]	−1[5]	−6[7]	−6[7]	−1[5]	−6[7]