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: "Design by Interactive Exploration Using Memory-Based Techniques"
  Abstract: One of the characteristics of design is that designers rely extensively on past experience in order to create new designs. Because of this, memory-based techniques from artificial intelligence, which help store, organise, retrieve, and reuse experiential knowledge held in memory, are good candidates for aiding designers. Another characteristic of design is the phenomenon of exploration in the early stages of design configuration. A designer begins with an ill-structured, partially defined, problem specification, and through a process of exploration gradually refines and modifies it as his/her understanding of the problem improves. In this paper we describe demex, an interactive computer-aided design system that employs memory-based techniques to help its users explore the design problems they pose to the system, in order to acquire a better understanding of the requirements of the problems. demex has been applied in the domain of structural design of buildings.

Connected through hyperedge HE-1 (induced by source paper "Developing Case-Based Reasoning for Structural Design"):
  with members:
    - "Towards More Creative Case-Based Design Systems"

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