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: "stochastic ordering based carrier to interference ratio analysis for the shotgun cellular systems"
  Abstract: An analytical tool based on usual stochastic ordering is developed to compare the distributions of carrier-to-interference ratio at the mobile station of cellular systems where the base stations are distributed randomly according to certain non-homogeneous Poisson point processes. The comparison is done by studying the base station densities without having to solve for the distributions of the carrier-to-interference ratio, which are often hard to obtain.

Connected through hyperedge HE-1 (induced by source paper "laplace functional ordering of point processes in large scale wireless networks"):
  with members:
    - "fundamentals of modeling finite wireless networks using binomial point process"
    - "partition based caching in large scale sic enabled wireless networks"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "cognitive radio with random number of secondary number of users"
    - "stochastic ordering of interferences in large scale wireless networks"
    - "user association for load balancing in heterogeneous cellular networks"
    - "applications of stochastic ordering to wireless communications"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-2 (induced by source paper "downlink analysis for a heterogeneous cellular network"):
  with members:
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "downlink coverage analysis in a heterogeneous cellular network"
    - "multi tier network performance analysis using a shotgun cellular system"
    - "a tractable approach to coverage and rate in cellular networks"
    - "downlink performance analysis for a generalized shotgun cellular system"
    - "femtocell networks a survey"

Connected through hyperedge HE-3 (induced by source paper "downlink mimo hetnets modeling ordering results and performance analysis"):
  with members:
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "modeling non uniform ue distributions in downlink cellular networks"
    - "analytical modeling of uplink cellular networks"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "stochastic ordering of interferences in large scale wireless networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling heterogeneous network interference using poisson point processes"

Connected through hyperedge HE-4 (induced by source paper "downlink performance analysis for a generalized shotgun cellular system"):
  with members:
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "equivalence and comparison of heterogeneous cellular networks"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "downlink coverage analysis in a heterogeneous cellular network"
    - "multi tier network performance analysis using a shotgun cellular system"

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.IT(Information Theory)