A Multiobjective Optimization Algorithm to Solve the Part Feeding Problem in Mixed-Model Assembly Lines

Table 2

Proposed priority heuristics.

Number	Name of the heuristic	Symbol	Definition
1	Most critical reference	MCR	Max.: 𝑤(𝑖)	∀𝑖=1,…,𝑛
2	Least critical reference	LCR	Min.: 𝑤(𝑖)	∀𝑖=1,…,𝑛
3	Smallest reference number	SRN	Smallest 𝑖	∀𝑖=1,…,𝑛
4	Greatest reference number	GRN	Greatest 𝑖	∀𝑖=1,…,𝑛
5	Maximum storage capacity	MaSC	Max.: 𝐶𝑖	∀𝑖=1,…,𝑛
6	Minimum storage capacity	MiSC	Min.: 𝐶𝑖	∀𝑖=1,…,𝑛
7	Maximum demand	MaD	Max.: ∑^NT𝑡=1𝑑𝑖𝑡	∀𝑖=1,…,𝑛
8	Minimum demand	MiD	Min.: ∑^NT𝑡=1𝑑𝑖𝑡	∀𝑖=1,…,𝑛
9	Maximum slack	MaS	Max.: NT−TB(𝑖)/𝐶𝑖^+	∀𝑖=1,…,𝑛
10	Minimum slack	MiS	Min.: NT−TB(𝑖)/𝐶𝑖^+	∀𝑖=1,…,𝑛