Advanced OR and AI Methods in Transportation ALGORITHMS FOR DECISION MAKING IN TRANSPORTATION SYSTEMS WITH UNCERTAIN KNOWLEDGE

A two-level transportation system with scheduling of independent, non-preemptive tasks on unrelated moving executors as well as motion control of a group of moving executors performing the tasks is considered. It is substituted by an uncertain one-level system, where execution times of the tasks are not crisp values but they belong to known intervals. In order to solve the problem the robust approach is used which is based on the worst-case relative regret function. The other manufacturing system with transport of a raw material and its distribution among parallel production units is also considered along with the solution algorithm, where uncertain variables are applied.