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: "mobility and popularity aware coded small cell caching"
  Abstract: In heterogeneous cellular networks with caching capability, due to mobility of users and storage constraints of small-cell base stations (SBSs), users may not be able to download all of their requested content from the SBSs within the delay deadline of the content. In that case, the users are directed to the macro-cell base station (MBS) in order to satisfy the service quality requirement. Coded caching is exploited here to minimize the amount of data downloaded from the MBS taking into account the mobility of the users as well as the popularity of the contents. An optimal distributed caching policy is presented when the delay deadline is below a certain threshold, and a distributed greedy caching policy is proposed when the delay deadline is relaxed.

Connected through hyperedge HE-1 (induced by source paper "mobility aware content placement for device to device caching systems"):
  with members:
    - "device caching for network offloading delay minimization with presence of user mobility"
    - "wireless device to device caching networks basic principles and system performance"
    - "mobility aware caching for content centric wireless networks modeling and methodology"
    - "mobility aware caching in d2d networks"
    - "distributed storage in mobile wireless networks with device to device communication"
    - "optimal storage allocation for wireless cloud caching systems with a limited sum storage capacity"
    - "caching placement in stochastic wireless caching helper networks channel selection diversity via caching"
    - "what will 5g be"

Connected through hyperedge HE-2 (induced by source paper "mobility aware content preference learning in decentralized caching networks"):
  with members:
    - "decentralized multi task learning based on extreme learning machines"
    - "user preference learning based edge caching for fog radio access network"
    - "exploiting mobility in cache assisted d2d networks performance analysis and optimization"
    - "learning to reweight examples for robust deep learning"
    - "caching policy for cache enabled d2d communications by learning user preference"
    - "context aware proactive content caching with service differentiation in wireless networks"
    - "optimizing content caching to maximize the density of successful receptions in device to device networking"
    - "effect of user mobility on the performance of device to device networks with distributed caching"

Connected through hyperedge HE-3 (induced by source paper "dynamic content updates in heterogeneous wireless networks"):
  with members:
    - "content popularity prediction towards location aware mobile edge caching"
    - "using grouped linear prediction and accelerated reinforcement learning for online content caching"
    - "optimal and scalable caching for 5g using reinforcement learning of space time popularities"
    - "caching with time varying popularity profiles a learning theoretic perspective"
    - "understanding performance of edge content caching for mobile video streaming"
    - "context aware proactive content caching with service differentiation in wireless networks"
    - "learning based optimization of cache content in a small cell base station"

Connected through hyperedge HE-4 (induced by source paper "the rich prefetching in edge caches for in order delivery to connected cars"):
  with members:
    - "a survey on mobile edge computing the communication perspective"
    - "mobility aware caching for content centric wireless networks modeling and methodology"
    - "the price of fog a data driven study on caching architectures in vehicular networks"
    - "cooperative caching and transmission design in cluster centric small cell networks"
    - "optimal geographic caching in cellular networks"

Connected through hyperedge HE-5 (induced by source paper "mobility aware coded storage and delivery"):
  with members:
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "adding transmitters dramatically boosts coded caching gains for finite file sizes"
    - "delay aware coded caching for mobile users"
    - "novel decentralized coded caching through coded prefetching"
    - "the optimal memory rate trade off for the non uniform centralized caching problem with two files under uncoded placement"
    - "coded caching in a multi server system with random topology"
    - "low subpacketization schemes for coded caching"
    - "optimization of heterogeneous coded caching"

Connected through hyperedge HE-6 (induced by source paper "storage repair bandwidth trade off for wireless caching with partial failure and broadcast repair"):
  with members:
    - "coded caching in a multi server system with random topology"
    - "broadcast repair for wireless distributed storage systems"
    - "wireless content caching for small cell and d2d networks"
    - "femtocaching and device to device collaboration a new architecture for wireless video distribution"
    - "cooperative regenerating codes"
    - "repairing multiple failures with coordinated and adaptive regenerating codes"

Connected through hyperedge HE-7 (induced by source paper "cache aided interactive multiview video streaming in small cell wireless networks"):
  with members:
    - "joint caching routing and channel assignment for collaborative small cell cellular networks"
    - "optimal layered representation for adaptive interactive multiview video streaming"
    - "adapting caching to audience retention rate which video chunk to store"
    - "learning based optimization of cache content in a small cell base station"
    - "collaborative p2p streaming of interactive live free viewpoint video"
    - "femtocaching wireless video content delivery through distributed caching helpers"

Connected through hyperedge HE-8 (induced by source paper "caching at the edge with lt codes"):
  with members:
    - "caching at the edge with fountain codes"
    - "inactivation decoding of lt and raptor codes analysis and code design"
    - "mds coded distributed storage for low delay wireless content delivery"
    - "optimizing mds codes for caching at the edge"

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)