Directed Bee Colony Optimization Algorithm to Solve the Nurse Rostering Problem

Table 2

Soft constraints
SC1	The maximum number of shifts assigned to each nurse.
SC2	The minimum number of shifts assigned to each nurse.
SC3	The maximum number of consecutive working days assigned to each nurse.
SC4	The minimum number of consecutive working days assigned to each nurse.
SC5	The maximum number of consecutive working days assigned to each nurse on which no shift is allotted.
SC6	The minimum number of consecutive working days assigned to each nurse on which no shift is allotted.
SC7	The maximum number of consecutive working weekends with at least one shift assigned to each nurse.
SC8	The minimum number of consecutive working weekends with at least one shift assigned to each nurse.
SC9	The maximum number of weekends with at least one shift assigned to each nurse.
SC10	Specific working day.
SC11	Requested day off.
SC12	Specific shift on.
SC13	Specific shift off.
SC14	Nurse not working on the unwanted pattern.