human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "graph neural network on electronic health records for predicting alzheimer s disease"
  Abstract: The cause of Alzheimer's disease (AD) is poorly understood, so forecasting AD remains a hard task in population health. Failure of clinical trials for AD treatments indicates that AD should be intervened at the earlier, pre-symptomatic stages. Developing an explainable method for predicting AD is critical for providing better treatment targets, better clinical trial recruitment, and better clinical care for the AD patients. In this paper, we present a novel approach for disease (AD) prediction based on Electronic Health Records (EHR) and graph neural network. Our method improves the performance on sparse data which is common in EHR, and obtains state-of-art results in predicting AD 12 to 24 months in advance on real-world EHR data, compared to other baseline results. Our approach also provides an insight into the structural relationship among different diagnosis, Lab values, and procedures from EHR as per graph structures learned by our model.

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.LG(Machine Learning)