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: "instantaneous relaying optimal strategies and interference neutralization"
  Abstract: In a multi-user wireless network equipped with multiple relay nodes, some relays are more intelligent than other relay nodes. The intelligent relays are able to gather channel state information, perform linear processing and forward signals whereas the dumb relays are only able to serve as amplifiers. As the dumb relays are oblivious to the source and destination nodes, the wireless network can be modeled as a relay network with smart instantaneous relay only: the signals of the source-destination link arrive at the same time as the source-relay-destination link. Recently, instantaneous relaying is shown to improve the degrees-of-freedom of the network as compared to the classical cut-set bound. In this paper, we study an achievable rate region and its boundary of the instantaneous interference relay channel in the scenario of (a) uninformed non-cooperative source-destination nodes (source and destination nodes are not aware of the existence of the relay and are non-cooperative) and (b) informed and cooperative source-destination nodes. Further, we examine the performance of interference neutralization: a relay strategy which is able to cancel interference signals at each destination node in the air. We observe that interference neutralization, although promised to achieve desired degrees-of-freedom, may not be feasible if the relay has limited power. Simulation results show that the optimal relay strategies improve the achievable rate region and provide better user-fairness in both uninformed non-cooperative and informed cooperative scenarios.

Connected through hyperedge HE-1 (induced by source paper "convolution attack on frequency hopping by full duplex radios"):
  with members:
    - "cognitive radio from hell flipping attack on direct sequence spread spectrum"
    - "a survey on wireless security technical challenges recent advances and future trends"
    - "massive mimo for next generation wireless systems"

Connected through hyperedge HE-2 (induced by source paper "dynamic interference steering in heterogeneous cellular networks"):
  with members:
    - "interference steering to manage interference"
    - "on feasibility of interference alignment in mimo interference networks"
    - "downlink interference alignment"
    - "on feasibility of interference alignment in mimo interference networks"
    - "transmission techniques for relay interference networks"

Connected through hyperedge HE-3 (induced by source paper "on the dof region of the two user interference channel with an instantaneous relay"):
  with members:
    - "information networks with in block memory"
    - "the degrees of freedom of the k pair user full duplex two way interference channel with and without a mimo relay"
    - "causal relay networks"
    - "on the index coding problem and its relation to network coding and matroid theory"
    - "an extremal inequality motivated by multiterminal information theoretic problems"

Connected through hyperedge HE-4 (induced by source paper "information leakage neutralization for the multi antenna non regenerative relay assisted multi carrier interference channel"):
  with members:
    - "aligned interference neutralization and the degrees of freedom of the 2 user interference channel with instantaneous relay"
    - "cooperation with an untrusted relay a secrecy perspective"
    - "transmission techniques for relay interference networks"

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)