A system for generating an optimal set of tasks to be performed includes an interface to receive from a user first and second processes and a priority criterion defining an objective of the first and second processes and a process converter configured to convert the first and second processes into tasks that make up the first process and the second process. The system further includes a task network modeler configured to determine relationships between the tasks and to generate a task network comprising the tasks of the first and second processes, the task network representing the relationships between the tasks of the first and second processes. The system further includes an optimization unit configured to generate, based on the priority criterion, an optimal set of tasks in the task network to be performed.