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: "parallel opportunistic routing in wireless networks"
  Abstract: We study benefits of opportunistic routing in a large wireless ad hoc network by examining how the power, delay, and total throughput scale as the number of source-destination pairs increases up to the operating maximum. Our opportunistic routing is novel in a sense that it is massively parallel, i.e., it is performed by many nodes simultaneously to maximize the opportunistic gain while controlling the interuser interference. The scaling behavior of conventional multihop transmission that does not employ opportunistic routing is also examined for comparison. Our main results indicate that our opportunistic routing can exhibit a net improvement in overall power-delay tradeoff over the conventional routing by providing up to a logarithmic boost in the scaling law. Such a gain is possible since the receivers can tolerate more interference due to the increased received signal power provided by the multi user diversity gain, which means that having more simultaneous transmissions is possible.

Connected through hyperedge HE-1 (induced by source paper "on the effects of subpacketization in content centric mobile networks"):
  with members:
    - "information theoretic caching the multi user case"
    - "wireless device to device caching networks basic principles and system performance"
    - "optimizing mds codes for caching at the edge"
    - "fundamental limits of caching in wireless d2d networks"
    - "the throughput outage tradeoff of wireless one hop caching networks"
    - "asymptotic laws for joint content replication and delivery in wireless networks"
    - "decentralized coded caching attains order optimal memory rate tradeoff"
    - "fundamental limits of caching"

Connected through hyperedge HE-2 (induced by source paper "multi stream opportunistic network decoupling relay selection and interference management"):
  with members:
    - "opportunistic downlink interference alignment for multi cell mimo networks"
    - "multi cell aware opportunistic random access for machine type communications"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "advanced interference management technique potentials and limitations"
    - "opportunistic interference alignment for mimo interfering multiple access channels"
    - "multi cell random beamforming achievable rate and degrees of freedom region"
    - "opportunistic relaying in wireless networks"
    - "degrees of freedom of the k user m times n mimo interference channel"

Connected through hyperedge HE-3 (induced by source paper "network decomposed hierarchical cooperation in ad hoc networks with social relationships"):
  with members:
    - "on the effects of subpacketization in content centric mobile networks"
    - "leveraging social communities for optimizing cellular device to device communications"
    - "context aware small cell networks how social metrics improve wireless resource allocation"
    - "asymptotic laws for joint content replication and delivery in wireless networks"
    - "improved capacity scaling in wireless networks with infrastructure"
    - "capacity scaling of wireless ad hoc networks shannon meets maxwell"
    - "on capacity scaling in arbitrary wireless networks"
    - "hierarchical cooperation achieves optimal capacity scaling in ad hoc networks"

Connected through hyperedge HE-4 (induced by source paper "opportunistic downlink interference alignment for multi cell mimo networks"):
  with members:
    - "codebook based opportunistic interference alignment"
    - "opportunistic downlink interference alignment"
    - "on the achievable dof and user scaling law of opportunistic interference alignment in 3 transmitter mimo interference channels"
    - "effect of receive spatial diversity on the degrees of freedom region in multi cell random beamforming"
    - "opportunistic interference alignment for mimo interfering multiple access channels"
    - "multiuser diversity in interfering broadcast channels achievable degrees of freedom and user scaling law"
    - "multi cell random beamforming achievable rate and degrees of freedom region"
    - "can one achieve multiuser diversity in uplink multi cell networks"

Connected through hyperedge HE-5 (induced by source paper "opportunistic network decoupling with virtual full duplex operation in multi source interfering relay networks"):
  with members:
    - "on the degrees of freedom of the large scale interfering two way relay network"
    - "codebook based opportunistic interference alignment"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "opportunistic downlink interference alignment"
    - "opportunistic interference alignment for mimo interfering multiple access channels"
    - "degrees of freedom of two hop wireless networks everyone gets the entire cake"
    - "opportunistic interference mitigation achieves optimal degrees of freedom in wireless multi cell uplink networks"
    - "opportunistic relaying in wireless networks"

Connected through hyperedge HE-6 (induced by source paper "optimal caching in mobile hetnets a throughput delay trade off perspective"):
  with members:
    - "wireless device to device caching networks basic principles and system performance"
    - "caching in wireless multihop device to device networks"
    - "throughput delay tradeoffs in content centric wireless networks"
    - "the throughput outage tradeoff of wireless one hop caching networks"
    - "asymptotic laws for joint content replication and delivery in wireless networks"
    - "decentralized coded caching attains order optimal memory rate tradeoff"
    - "fundamental limits of caching"
    - "improved capacity scaling in wireless networks with infrastructure"

Connected through hyperedge HE-7 (induced by source paper "capacity of three dimensional erasure networks"):
  with members:
    - "improved capacity scaling in wireless networks with infrastructure"
    - "on capacity scaling in arbitrary wireless networks"

Connected through hyperedge HE-8 (induced by source paper "greeninfra capacity of large scale hybrid networks with cost effective infrastructure"):
  with members:
    - "scaling laws for infrastructure single and multihop wireless networks in wideband regimes"
    - "improved capacity scaling in wireless networks with infrastructure"
    - "on capacity scaling in arbitrary wireless networks"
    - "information theoretic operating regimes of large wireless networks"
    - "hierarchical cooperation achieves optimal capacity scaling in ad hoc 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)