human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent groups of papers sharing a common citing paper.

Details of the hypergraph:
Center node: "A Preprocessing Model for Integrating CBR and Prototype-Based Neural Networks"
  Abstract: Some important factors that play a major role in determining the performances of a CBR (Case-Based Reasoning) system are the complexity and the accuracy of the retrieval phase. Both flat memory and inductive approaches suffer from serious drawbacks. In the first approach, the search time increases when dealing with large scale memory base, while in the second one the modification of the case memory becomes very complex because of its sophisticated architecture. In this paper, we show how we construct a simple efficient indexing system structure. The idea is to construct a case hierarchy with two levels of memory: the lower level contains cases organised into groups of similar cases, while the upper level contains prototypes. each prototype represents one group of cases. This smaller memory is used during the retrieval phase. Prototype construction is achieved by means of an incremental prototype-based NN (Neural Network). We show that this mode of CBR-NN coupling is a preprocessing one where the neural network serves as an indexing system to the

Connected through hyperedge HE-1 (induced by source paper "Conceptual Analogy: Conceptual clustering for informed and efficient analogical reasoning"):
  with members:
    - "Structural Similarity as Guidance in Case-Based Design"

Connected through hyperedge HE-2 (induced by source paper "Structural Similarity and Adaptation"):
  with members:
    - "Structural Similarity as Guidance in Case-Based Design"
    - "Automatic Indexing, Retrieval and Reuse of Topologies in Architectual Layouts"

Question: Please tell me which class the center node 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