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: "optimal geographic caching in finite wireless networks"
  Abstract: Cache-enabled device-to-device (D2D) networks turn memory of the devices at the network edge, such as smart phones and tablets, into bandwidth by enabling asynchronous content sharing directly between proximate devices. Limited storage capacity of the mobile devices necessitates the determination of optimal set of contents to be cached on each device. In order to study the problem of optimal cache placement, we model the locations of devices in a finite region (e.g., coffee shop, sports bar, library) as a uniform binomial point process (BPP). For this setup, we first develop a generic framework to analyze the coverage probability of the target receiver (target-Rx) when the requested content is available at the $k^{th}$ closest device to it. Using this coverage probability result, we evaluate optimal caching probability of the popular content to maximize the total hit probability. Our analysis concretely demonstrates that optimal caching probability strongly depends on the number of simultaneously active devices in the network.

Connected through hyperedge HE-1 (induced by source paper "stochastic geometry modeling and analysis of single and multi cluster wireless networks"):
  with members:
    - "3gpp inspired hetnet model using poisson cluster process sum product functionals and downlink coverage"
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "fundamentals of modeling finite wireless networks using binomial point process"
    - "a primer on cellular network analysis using stochastic geometry"
    - "enriched k tier hetnet model to enable the analysis of user centric small cell deployments"
    - "poisson cluster process based analysis of hetnets with correlated user and base station locations"
    - "nearest neighbor and contact distance distributions for thomas cluster process"
    - "modeling and performance analysis of clustered device to device networks"

Connected through hyperedge HE-2 (induced by source paper "mitigating interference in content delivery networks by spatial signal alignment the approach of shot noise ratio"):
  with members:
    - "sinr outage evaluation in cellular networks saddle point approximation spa using normal inverse gaussian nig distribution"
    - "effect of user mobility on the performance of device to device networks with distributed caching"
    - "content delivery in erasure broadcast channels with cache and feedback"
    - "wireless device to device caching networks basic principles and system performance"
    - "wireless caching technical misconceptions and business barriers"
    - "cooperative caching and transmission design in cluster centric small cell networks"
    - "cache enabled heterogeneous cellular networks optimal tier level content placement"
    - "greendelivery proactive content caching and push with energy harvesting based small cells"

Connected through hyperedge HE-3 (induced by source paper "optimal caching and scheduling for cache enabled d2d communications"):
  with members:
    - "fundamentals of cluster centric content placement in cache enabled device to device networks"
    - "wireless device to device caching networks basic principles and system performance"
    - "the effects of mobility on the hit performance of cached d2d networks"
    - "optimal geographic caching in cellular networks"
    - "efficient scheduling and power allocation for d2d assisted wireless caching networks"
    - "base station assisted device to device communications for high throughput wireless video networks"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "coverage and economy of cellular networks with many base stations"

Connected through hyperedge HE-4 (induced by source paper "poisson cluster process based analysis of hetnets with correlated user and base station locations"):
  with members:
    - "3gpp inspired hetnet model using poisson cluster process sum product functionals and downlink coverage"
    - "poisson cluster process bridging the gap between ppp and 3gpp hetnet models"
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "ergodic spectral efficiency in mimo cellular networks"
    - "fundamentals of modeling finite wireless networks using binomial point process"
    - "a primer on cellular network analysis using stochastic geometry"
    - "fundamentals of cluster centric content placement in cache enabled device to device networks"
    - "enriched k tier hetnet model to enable the analysis of user centric small cell deployments"

Connected through hyperedge HE-5 (induced by source paper "coded caching clusters with device to device communications"):
  with members:
    - "mobility increases the data offloading ratio in d2d caching networks"
    - "on consideration of content preference and sharing willingness in d2d assisted offloading"
    - "spatially correlated content caching for device to device communications"
    - "fundamentals of cluster centric content placement in cache enabled device to device networks"
    - "wireless device to device caching networks basic principles and system performance"
    - "wireless content caching for small cell and d2d networks"
    - "energy costs for traffic offloading by cache enabled d2d communications"
    - "caching in wireless multihop device to device networks"

Connected through hyperedge HE-6 (induced by source paper "fundamentals of cluster centric content placement in cache enabled device to device networks"):
  with members:
    - "wireless device to device caching networks basic principles and system performance"
    - "modeling and performance analysis of clustered device to device networks"
    - "unmanned aerial vehicle with underlaid device to device communications performance and tradeoffs"
    - "d2d enhanced heterogeneous cellular networks with dynamic tdd"
    - "an analytical framework for device to device communication in cellular networks"
    - "optimal geographic caching in cellular networks"
    - "on fundamental trade offs of device to device communications in large wireless networks"
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"

Connected through hyperedge HE-7 (induced by source paper "fundamentals of modeling finite wireless networks using binomial point process"):
  with members:
    - "a primer on cellular network analysis using stochastic geometry"
    - "fundamentals of cluster centric content placement in cache enabled device to device networks"
    - "modeling and performance analysis of clustered device to device networks"
    - "performance analysis of arbitrarily shaped underlay cognitive networks effects of secondary user activity protocols"
    - "optimal geographic caching in cellular networks"
    - "analyzing the impact of access point density on the performance of finite area networks"
    - "analysis of millimeter wave networked wearables in crowded environments"
    - "analysis of heterogeneous cellular networks under frequency diversity and interference correlation"

Connected through hyperedge HE-8 (induced by source paper "cache enabled heterogeneous cellular networks optimal tier level content placement"):
  with members:
    - "effect of user mobility on the performance of device to device networks with distributed caching"
    - "content delivery in erasure broadcast channels with cache and feedback"
    - "wireless caching technical misconceptions and business barriers"
    - "analysis and optimization of caching and multicasting in large scale cache enabled heterogeneous wireless networks"
    - "cooperative caching and transmission design in cluster centric small cell networks"
    - "analysis on cache enabled wireless heterogeneous networks"
    - "cross layer optimization of fast video delivery in cache enabled relaying networks"
    - "optimal geographic caching in cellular 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)