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: "Walsh Functions and Predicting Problem Complexity"

Connected through hyperedge HE-1 (induced by source paper "Nonlinearity, Hyperplane Ranking and the Simple Genetic Algorithm"):
  with members:
    - "3 Representation Issues in Neighborhood Search and Evolutionary Algorithms"
    - "Hyperplane Ranking in Simple Genetic Algorithms"

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: Genetic_Algorithms