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: "Variational Gaussian Process Classifiers"

Connected through hyperedge HE-1 (induced by source paper "Monte Carlo Implementation of Gaussian Process Models for Bayesian Regression and Classification"):
  with members:
    - "Regression with Input-dependent Noise: A Gaussian Process Treatment"
    - "Gaussian Processes for Bayesian Classification via Hybrid Monte Carlo"
    - "Efficient Implementation of Gaussian Processes"

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: Neural_Networks