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: "cloud radio access networks with coded caching"
  Abstract: A cloud radio access network (C-RAN) is considered as a candidate to meet the expectations of higher data rate de- mands in wireless networks. In C-RAN, low energy base stations (BSs) are deployed over a small geography and are allowed to connect to the cloud via finite capacity backhaul links where the information is processed. A conventional C-RAN, however, requires high capacity backhaul links, since the requested files need to be transferred first from the cloud to the BS before conveying them to the users. One approach to overcome the limitations of the backhaul links is to introduce local storage caches at the BSs, in which the popular files are stored locally in order to reduce the load of the backhaul links. Furthermore, we utilize coded caching with the goal to minimize the total network cost, i.e., the transmit power and the cost associated with the backhaul links. The initial formulation of the optimization problem for this model is non-convex. We first reformulate and then convexify the problem through some relaxation techniques. In comparison to the uncoded caching at the BSs, our results highlight the benefits associated with coded caching and show that it decreases the backhaul cost.

Connected through hyperedge HE-1 (induced by source paper "caching at base stations with multi cluster multicast wireless backhaul via accelerated first order algorithm"):
  with members:
    - "caching at base stations with heterogeneous user demands and spatial locality"
    - "optimized base station cache allocation for cloud radio access network with multicast backhaul"
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "noisy broadcast networks with receiver caching"
    - "caching at the wireless edge design aspects challenges and future directions"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "analysis and optimization of caching and multicasting in large scale cache enabled wireless networks"

Connected through hyperedge HE-2 (induced by source paper "joint fronthaul multicast and cooperative beamforming for cache enabled cloud based small cell networks an mds codes aided approach"):
  with members:
    - "joint long term cache allocation and short term content delivery in green cloud small cell networks"
    - "layered group sparse beamforming for cache enabled green wireless networks"
    - "fog aided wireless networks for content delivery fundamental latency tradeoffs"
    - "joint optimization of user association data delivery rate and precoding for cache enabled f rans"
    - "optimizing mds coded caching in wireless networks with device to device communication"
    - "coded multicast fronthauling and edge caching for multi connectivity transmission in fog radio access networks"
    - "delivery time minimization in edge caching synergistic benefits of subspace alignment and zero forcing"
    - "fronthauling for 5g lte u ultra dense cloud small cell networks"

Connected through hyperedge HE-3 (induced by source paper "interference mitigation via rate splitting and common message decoding in cloud radio access networks"):
  with members:
    - "energy efficiency of rate splitting multiple access and performance benefits over sdma and noma"
    - "rate splitting for multi antenna non orthogonal unicast and multicast transmission"
    - "cross layer design for downlink multihop cloud radio access networks with network coding"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "optimality of treating interference as noise a combinatorial perspective"
    - "fronthaul constrained cloud radio access networks insights and challenges"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "what will 5g be"

Connected through hyperedge HE-4 (induced by source paper "optimized base station cache allocation for cloud radio access network with multicast backhaul"):
  with members:
    - "fog aided wireless networks for content delivery fundamental latency tradeoffs"
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "cloud radio access network virtualizing wireless access for dense heterogeneous systems"
    - "analysis and optimization of caching and multicasting in large scale cache enabled wireless networks"
    - "sparse beamforming and user centric clustering for downlink cloud radio access network"
    - "joint precoding and multivariate backhaul compression for the downlink of cloud radio access networks"

Connected through hyperedge HE-5 (induced by source paper "efficient virtual network function placement strategies for cloud radio access networks"):
  with members:
    - "optimal virtual network function placement in multi cloud service function chaining architecture"
    - "recent advances in fog radio access networks performance analysis and radio resource allocation"
    - "resource allocation in cloud radio access networks with device to device communications"
    - "recent advances in cloud radio access networks system architectures key techniques and open issues"
    - "inter tier interference suppression in heterogeneous cloud radio access networks"
    - "heterogeneous cloud radio access networks a new perspective for enhancing spectral and energy efficiencies"

Connected through hyperedge HE-6 (induced by source paper "improved converses and gap results for coded caching"):
  with members:
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "centralized caching and delivery of correlated contents over a gaussian broadcast channel"
    - "benefits of cache assignment on degraded broadcast channels"
    - "cache aided content delivery over erasure broadcast channels"
    - "characterizing the rate memory tradeoff in cache networks within a factor of 2"
    - "physical layer schemes for wireless coded caching"
    - "rate memory trade off for the two user broadcast caching network with correlated sources"
    - "noisy broadcast networks with receiver caching"

Connected through hyperedge HE-7 (induced by source paper "fog aided wireless networks for content delivery fundamental latency tradeoffs"):
  with members:
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "fundamental limits of cache aided interference management"
    - "a learning based approach to caching in heterogenous small cell networks"
    - "fundamental storage latency tradeoff in cache aided mimo interference networks"
    - "fog computing based radio access networks issues and challenges"
    - "a new converse bound for coded caching"
    - "joint optimization of cloud and edge processing for fog radio access networks"
    - "placing dynamic content in caches with small population"

Connected through hyperedge HE-8 (induced by source paper "fundamental limits on delivery time in cloud and cache aided heterogeneous networks"):
  with members:
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "degrees of freedom of cache aided wireless interference networks"
    - "fundamental limits of cache aided interference management"
    - "coded caching for a large number of users"
    - "fog computing based radio access networks issues and challenges"
    - "joint optimization of cloud and edge processing for fog radio access networks"
    - "backhaul traffic balancing and dynamic content centric clustering for the downlink of fog radio access network"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"

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)