Study on Single-Machine Group Scheduling with Due-Window Assignment and Position-Dependent Weights

Table 1

List of notations.

Notations	Definitions
	Number of jobs
	Number of groups
	Index of job
	Index of group
	Number of group
	Job of group
	Setup time of group
	Processing time of job
	Due-window of job
	Due-window starting time of job
	Due-window finishing time of job
	Due-window size of job
	Completion time of job
	Starting (finishing) time of common due-window in group
	Common flow allowance of slack due-window in group
	An optimal schedule of jobs
	Lateness penalty of job
	Weight of the ^th position in group
	Unit cost of
	Unit cost of
CONDW	Common due-window assignment
SLKDW	Slack due-window assignment
DIFDW	Different due-window assignment
	Job scheduled in the ^th position
	Weight cost of ^th position in group
	Weight factor of group