A Multiobjective Optimization Algorithm Based on Discrete Bacterial Colony Chemotaxis

Table 1

Test functions.

Problems	𝑛	Constraint	Objective functions
SCH	1	[−10^3, 10^3]	𝑓1(𝑥)=𝑥^2; 𝑓2(𝑥)=(𝑥−2)^2
DEB	2	[0, 1]	𝑓1(𝑥)=𝑥1; 𝑓2=1+10𝑥2×𝑥1−^11+10𝑥2^2−𝑥1×sin8𝜋𝑥11+10𝑥2
ZDT1	30	[0, 1]	𝑓1(𝑥)=𝑥1; 𝑓2(𝑥)(𝑥𝑥=𝑔)1−^1𝑔(𝑥)^0.5; 𝑔(𝑥)9∑=1+^𝑛𝑖=2𝑥𝑖(𝑛−1)
ZDT2	30	[0, 1]	𝑓1(𝑥)=𝑥1; 𝑓2(𝑥)(𝑥𝑥=𝑔)1−^1𝑔(𝑥)^2; 𝑔(𝑥)9∑=1+^𝑛𝑖=2𝑥𝑖(𝑛−1)
SRN	2	[−20, 20]	𝑓1(𝑥)=𝑥1−2^2+𝑥2−1^2+2; 𝑓2(𝑥)=9𝑥1−𝑥2−1^2; 𝑔1(𝑥)=𝑥^21+𝑥^22−225≤0; 𝑔2(𝑥)=𝑥1−3𝑥2+10≤0