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: "describing papers and reviewers competences by taxonomy of keywords"
  Abstract: This article focuses on the importance of the precise calculation of#R##N#   similarity factors between papers and reviewers for performing a fair and#R##N#   accurate automatic assignment of reviewers to papers. It suggests that papers#R##N#   and reviewers’ competences should be described by taxonomy of keywords so#R##N#   that the implied hierarchical structure allows similarity measures to take#R##N#   into account not only the number of exactly matching keywords, but in case of#R##N#   non-matching ones to calculate how semantically close they are. The paper#R##N#   also suggests a similarity measure derived from the well-known and#R##N#   widely-used Dice's coefficient, but adapted in a way it could be also applied#R##N#   between sets whose elements are semantically related to each other (as#R##N#   concepts in taxonomy are). It allows a non-zero similarity factor to be#R##N#   accurately calculated between a paper and a reviewer even if they do not#R##N#   share any keyword in common.

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.IR(Information Retrieval)