Evolutionary Multiobjective Optimization including Practically Desirable Solutions

Figure 8

GD over the generations by single population method and proposed concurrent search method. DTLZ3, original objectives, objectives in the extended space, and variables. GD is calculated separately grouping solutions into three groups according the preferred values , and optimal value . Solutions are considered within a group if , , or , respectively.

(a) Single population

(b) Single population

(c) Single population

(d) Concurrent search

(e) Concurrent search

(f) Concurrent search