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: "cooperative local caching under heterogeneous file preferences"
  Abstract: Local caching is an effective scheme for leveraging the memory of the mobile terminal (MT) and short range communications to save the bandwidth usage and reduce the download delay in the cellular communication system. Specifically, the MTs first cache in their local memories in off-peak hours and then exchange the requested files with each other in the vicinity during peak hours. However, prior works largely overlook MTs’ heterogeneity in file preferences and their selfish behaviours. In this paper, we practically categorize the MTs into different interest groups according to the MTs’ preferences. Each group of MTs aims to increase the probability of successful file discovery from the neighbouring MTs (from the same or different groups). Hence, we define the groups’ utilities as the probability of successfully discovering the file in the neighbouring MTs, which should be maximized by deciding the caching strategies of different groups. By modelling MTs’ mobilities as homogeneous Poisson point processes (HPPPs), we analytically characterize MTs’ utilities in closed-form. We first consider the fully cooperative case where a centralizer helps all groups to make caching decisions. We formulate the problem as a weighted-sum utility maximization problem, through which the maximum utility trade-offs of different groups are characterized. Next, we study two benchmark cases under selfish caching, namely, partial and no cooperation, with and without inter-group file sharing, respectively. The optimal caching distributions for these two cases are derived. Finally, numerical examples are presented to compare the utilities under different cases and show the effectiveness of the fully cooperative local caching compared to the two benchmark cases. Part of this work is to appear in the IEEE International Conference on Communications (ICC), Kuala Lumpur, 2016. Y. Guo is with the Department of Electrical and Computer Engineering, National University of Singapore (e-mail: yinghao.guo@nus.edu.sg). L. Duan is with the Engineering Systems and Design Pillar, Singapore University of Technology and Design (e-mail: lingjie duan@sutd.edu.sg). R. Zhang is with the Department of Electrical and Computer Engineering, National University of Singapore (email:elezhang@nus.edu.sg). He is also with the Institute for Infocomm Research, A*STAR, Singapore.

Connected through hyperedge HE-1 (induced by source paper "individual preference aware caching policy design in wireless d2d networks"):
  with members:
    - "throughput outage analysis and evaluation of cache aided d2d networks with measured popularity distributions"
    - "modeling and performance analysis of full duplex communications in cache enabled d2d networks"
    - "learning based delay aware caching in wireless d2d caching networks"
    - "caching policy optimization for d2d communications by learning user preference"
    - "high throughput opportunistic cooperative device to device communications with caching"
    - "cache enabled device to device communications offloading gain and energy cost"
    - "on consideration of content preference and sharing willingness in d2d assisted offloading"
    - "optimizing content caching to maximize the density of successful receptions in device to device networking"

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"
    - "mobility and popularity aware coded small cell caching"
    - "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"

Connected through hyperedge HE-3 (induced by source paper "human like hybrid caching in software defined edge cloud"):
  with members:
    - "cognitive information measurements a new perspective"
    - "context aware proactive content caching with service differentiation in wireless networks"
    - "a learning based approach to caching in heterogenous small cell networks"
    - "soft cache hits and the impact of alternative content recommendations on mobile edge caching"

Connected through hyperedge HE-4 (induced by source paper "content placement in cache networks using graph coloring"):
  with members:
    - "mobility aware caching for content centric wireless networks modeling and methodology"
    - "optimal storage allocation for wireless cloud caching systems with a limited sum storage capacity"
    - "wireless content caching for small cell and d2d networks"
    - "caching placement in stochastic wireless caching helper networks channel selection diversity via caching"
    - "cache enabled heterogeneous cellular networks optimal tier level content placement"
    - "optimal caching placement for d2d assisted wireless caching networks"
    - "cache enabled opportunistic cooperative mimo for video streaming in wireless systems"
    - "base station assisted device to device communications for high throughput wireless video networks"

Connected through hyperedge HE-5 (induced by source paper "when exploiting individual user preference is beneficial for caching at base stations"):
  with members:
    - "caching policy optimization for d2d communications by learning user preference"
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "caching at the wireless edge design aspects challenges and future directions"
    - "big data caching for networking moving from cloud to edge"
    - "energy efficiency of downlink networks with caching at base stations"
    - "cooperative caching and transmission design in cluster centric small cell networks"
    - "optimal geographic caching in cellular networks"
    - "analysis and optimization of caching and multicasting in large scale cache enabled wireless networks"

Connected through hyperedge HE-6 (induced by source paper "overcoming endurance issue uav enabled communications with proactive caching"):
  with members:
    - "uav aided offloading for cellular hotspot"
    - "energy minimization for wireless communication with rotary wing uav"
    - "common throughput maximization in uav enabled ofdma systems with delay consideration"
    - "placement optimization of uav mounted mobile base stations"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "energy efficient data collection in uav enabled wireless sensor network"
    - "joint altitude and beamwidth optimization for uav enabled multiuser communications"
    - "cyclical multiple access in uav aided communications a throughput delay tradeoff"

Connected through hyperedge HE-7 (induced by source paper "caching policy for cache enabled d2d communications by learning user preference"):
  with members:
    - "caching policy optimization for d2d communications by learning user preference"
    - "cache enabled device to device communications offloading gain and energy cost"
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "caching at the wireless edge design aspects challenges and future directions"
    - "wireless device to device caching networks basic principles and system performance"
    - "energy efficiency of downlink networks with caching at base stations"
    - "placing dynamic content in caches with small population"
    - "a provably efficient online collaborative caching algorithm for multicell coordinated systems"

Connected through hyperedge HE-8 (induced by source paper "on consideration of content preference and sharing willingness in d2d assisted offloading"):
  with members:
    - "cache enabled device to device communications offloading gain and energy cost"
    - "optimizing content caching to maximize the density of successful receptions in device to device networking"
    - "echo state networks for proactive caching in cloud based radio access networks with mobile users"
    - "energy efficient transmission for multicast services in miso distributed antenna systems"
    - "wireless device to device caching networks basic principles and system performance"
    - "caching in the sky proactive deployment of cache enabled unmanned aerial vehicles for optimized quality of experience"
    - "totally distributed energy efficient transmission in mimo interference channels"
    - "social data offloading in d2d enhanced cellular networks by network formation games"

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)