Piecewise Linear Model for Multiskilled Workforce Scheduling Problems considering Learning Effect and Project Quality

Table 2

Orthogonal parameters.

Parameter	Definition	Level 1	Level 2	Level 3
	The number of employees	6	9	12
	The number of skills	3	4	5
	Project cycle (weeks)	8	12	16
	Turnover rate of employee	10%	20%	30%
	Average number of skills each employee masters	1, 1.4	1.6, 2	2.2, 2.6
	Task tightness	0.85	0.9	0.95
	Coefficient of variation	0, 0.3	0.4, 0.7	0.8, 1.1