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 "Case-based Acquisition of User Preferences for Solution Improvement in Ill-Structured Domains"):
  Abstract: 1 We have developed an approach to acquire complicated user optimization criteria and use them to guide

Includes members:
  Member "Improving accuracy by combining rule-based and case-based reasoning":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "A comparison of Anapron with seven other name-pronunciation systems")
  Member "Using Case-Based Reasoning as a Reinforcement Learning Framework for Optimization with Changing Criteria":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Transfer of Learning by Composing Solutions of Elemental Sequential Tasks")
  Member "Using Case-Based Reasoning to Acquire User Scheduling Preferences that Change over Time":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "Using Case-Based Reasoning as a Reinforcement Learning Framework for Optimization with Changing Criteria")
  Member "Modeling Ill-Structured Optimization Tasks through Cases":
    also connected through other hyperedges:
      (none)

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