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: "dedicated relay vs user cooperation in time duplexed multiaccess networks"
  Abstract: The performance of user cooperation that results when users forward packets for each other in a multiaccess network is ompared to that of dedicated-relay cooperation which results from using a dedicated wireless relay when the users do not cooperate. Using the total transmit and processing power consumed at all nodes as a cost metric, the outage probabilities achieved by dynamic decode-and-forward (DDF) and amplify-and-forward (AF) are compared for the two networks. A geometry-inclusive high signal-to-noise ratio (SNR) outage analysis in conjunction with area-averaged numerical simulations shows that in a K-user time-duplexed multiaccess network, user and dedicated-relay cooperation achieve a maximum diversity per user of K and 2, respectively, under both DDF and AF. However, when accounting for energy costs of processing and communication, dedicated-relay cooperation can be more energy efficient than user cooperation, i.e., dedicated-relay cooperation achieves coding (SNR) gains, particularly in the low SNR regime, that override the diversity advantage of user cooperation.

Connected through hyperedge HE-1 (induced by source paper "the finite state mac with cooperative encoders and delayed csi"):
  with members:
    - "interference channels with source cooperation"
    - "source coding when the side information may be delayed"
    - "interference channels with destination cooperation"
    - "on the capacity of memoryless finite state multiple access channels with asymmetric state information at the encoders"
    - "compound multiple access channels with partial cooperation"
    - "interference mitigation through limited receiver cooperation symmetric case"
    - "on the symmetric gaussian interference channel with partial unidirectional cooperation"
    - "the gaussian mac with conferencing encoders"

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)