org.optaplanner:optaplanner-constraint-streams-drools (maven):  OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the Drools implementation of Constraint streams. 
Keywords: artificial-intelligence|branch-and-bound|constraint-programming|constraint-satisfaction-problem|constraint-solver|constraints|employee-rostering|java|local-search|mathematical-optimization|metaheuristics|optimization|rostering|scheduling|simulated-annealing|solver|tabu-search|traveling-salesman|traveling-salesman-problem|vehicle-routing-problem