An Improved Differential Evolution Algorithm for a Multicommodity Location-Inventory Problem with False Failure Returns

Table 1

IDE notations.

Notation	Explanation
Np	population size
N	dimension (i.e., number of customer zones in this study)
G	maximum number of generations for evolution
K	number of consecutive iterations if no better individual
	solution vector of individuals i in generation (i=1, 2, …, Np)
V	mutant vector of individuals i in generation (i=1, 2, …, Np)
U	trial vector of individuals i in generation (i=1, 2, …, Np)
	mutation factor of individuals i in generation (i=1, 2, …, Np)
CR	crossover factor