human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups papers that share a common citing paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Knowledge Based Systems"):
  Abstract: Technical Report No. 95/2

Includes members:
  Member "Multi-Strategy Learning and Theory Revision":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "From Theory Refinement to KB Maintenance: a Position Statement")

Question: Please tell me which class the citing paper (i.e., the source paper of the center hyperedge) belongs to. The 7 classes are: Neural_Networks, Reinforcement_Learning, Probabilistic_Methods, Theory, Genetic_Algorithms, Case_Based, Rule_Learning. Directly output the class name.

gpt: Case_Based