human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "A system for the use of answer set programming in reinforcement learning"):
  Abstract: We present the software system QASP which integrates Reinforcement Learning (RL) with Answer Set Programming (ASP). Our framework allows for the ASP-based representation, computation and constraining of states and actions (and other events), and for the use of AnsProlog for the specification of action- and event-calculi and background knowledge for RL.

Includes members:
  Member "Potassco: The Potsdam Answer Set Solving Collection":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Solving SAT and SAT Modulo Theories: From an abstract Davis--Putnam--Logemann--Loveland procedure to DPLL( T )")

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science