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: "Creative Design: Reasoning and Understanding"
  Abstract: This paper investigates memory issues that influence long- term creative problem solving and design activity, taking a case-based reasoning perspective. Our exploration is based on a well-documented example: the invention of the telephone by Alexander Graham Bell. We abstract Bell's reasoning and understanding mechanisms that appear time and again in long-term creative design. We identify that the understanding mechanism is responsible for analogical anticipation of design constraints and analogical evaluation, beside case-based design. But an already understood design can satisfy opportunistically suspended design problems, still active in background. The new mechanisms are integrated in a computational model, ALEC 1 , that accounts for some creative be

Connected through hyperedge HE-1 (induced by source paper "Modeling Invention by Analogy in ACT-R"):
  with members:
    - "Opportunistic Reasoning: A Design Perspective"
    - "KRITIK: AN EARLY CASE-BASED DESIGN SYSTEM"

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