Dynamic Multiobjective Software Project Scheduling Optimization Method Based on Firework Algorithm

Table 1

Basic symbols and their notations.

Symbol	Definition
	The set of employees
	The set of tasks
	The set of skills required by the tasks
dj	The duration of task aj
stj	The start time of task aj
Paj	The predecessor set of aj
	The weekly salary of the employees for the project
si	Employee ei per unit time salary
ti	The total working time of employee ei
	Employee ei’s skill level for skill skk
	Task aj’s workload for skill skk
Sch	The workload of the whole project
Tc	The costs of the software project
Td	The duration of the software project
Tr	The robustness of the software project
	The stability of the software project