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: "spatially correlated content caching for device to device communications"
  Abstract: We study optimal geographic content placement for device-to-device (D2D) networks in which each file's popularity follows the Zipf distribution. The locations of the D2D users (caches) are modeled by a Poisson point process (PPP) and have limited communication range and finite storage. Inspired by the Mat\'{e}rn hard-core (type II) point process that captures pairwise interactions between nodes, we devise a novel spatially correlated caching strategy called {\em hard-core placement} (HCP) such that the D2D nodes caching the same file are never closer to each other than the {\em exclusion radius}. The exclusion radius plays the role of a substitute for caching probability. We derive and optimize the exclusion radii to maximize the {\em hit probability}, which is the probability that a given D2D node can find a desired file at another node's cache within its communication range. Contrasting it with independent content placement, which is used in most prior work, our HCP strategy often yields a significantly higher cache hit probability. We further demonstrate that the HCP strategy is effective for small cache sizes and a small communication radius, which are likely conditions for D2D.

Connected through hyperedge HE-1 (induced by source paper "throughput outage analysis and evaluation of cache aided d2d networks with measured popularity distributions"):
  with members:
    - "modeling and performance analysis of full duplex communications in cache enabled d2d networks"
    - "performance of caching based d2d video distribution with measured popularity distributions"
    - "high throughput opportunistic cooperative device to device communications with caching"
    - "cache enabled device to device communications offloading gain and energy cost"
    - "cost optimal caching for d2d networks with user mobility modeling analysis and computational approaches"
    - "optimizing content caching to maximize the density of successful receptions in device to device networking"
    - "wireless device to device caching networks basic principles and system performance"
    - "a learning based approach to caching in heterogenous small cell networks"

Connected through hyperedge HE-2 (induced by source paper "fog aided device to device networks with opportunistic content delivery"):
  with members:
    - "resource allocation in noma based fog radio access networks"
    - "fog radio access networks mobility management interference mitigation and resource optimization"
    - "d2d aware device caching in mmwave cellular networks"
    - "caching in the sky proactive deployment of cache enabled unmanned aerial vehicles for optimized quality of experience"
    - "fog computing based radio access networks issues and challenges"
    - "the three primary colors of mobile systems"
    - "mobility aware caching in d2d networks"
    - "wireless content caching for small cell and d2d networks"

Connected through hyperedge HE-3 (induced by source paper "wireless caching helper system with heterogeneous traffic and random availability"):
  with members:
    - "modeling and performance analysis of full duplex communications in cache enabled d2d networks"
    - "a survey on mobile edge networks convergence of computing caching and communications"
    - "optimal caching and scheduling for cache enabled d2d communications"
    - "cache enabled device to device communications offloading gain and energy cost"
    - "wireless caching technical misconceptions and business barriers"
    - "on the delay of geographical caching methods in two tiered heterogeneous networks"
    - "content caching and distribution in smart grid enabled wireless networks"
    - "energy efficiency of downlink networks with caching at base stations"

Connected through hyperedge HE-4 (induced by source paper "spatial soft core caching"):
  with members:
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "spatial multi lru caching for wireless networks with coverage overlaps"
    - "joint optimization of cloud and edge processing for fog radio access networks"
    - "adaptive caching networks with optimality guarantees"
    - "optimal geographic caching in cellular networks"
    - "cache aided interference channels"
    - "fundamental limits of caching in wireless d2d networks"
    - "fundamental limits of caching"

Connected through hyperedge HE-5 (induced by source paper "centralized coded caching with user cooperation"):
  with members:
    - "fundamental latency limits for d2d aided content delivery in fog wireless networks"
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "improved converses and gap results for coded caching"
    - "optimizing mds coded caching in wireless networks with device to device communication"
    - "multi server coded caching"
    - "fundamental limits of caching in wireless d2d networks"
    - "decentralized coded caching attains order optimal memory rate tradeoff"
    - "fundamental limits of caching"

Connected through hyperedge HE-6 (induced by source paper "a brief history on the theoretical analysis of dense small cell wireless networks"):
  with members:
    - "optimal base station antenna downtilt in downlink cellular networks"
    - "sinr and throughput of dense cellular networks with stretched exponential path loss"
    - "ultra dense networks is there a limit to spatial spectrum reuse"
    - "wireless powered dense cellular networks how many small cells do we need"
    - "inter operator base station coordination in spectrum shared millimeter wave cellular networks"
    - "downlink cellular network analysis with los nlos propagation and elevated base stations"
    - "performance impact of base station antenna heights in dense cellular networks"
    - "modeling infrastructure sharing in mmwave networks with shared spectrum licenses"

Connected through hyperedge HE-7 (induced by source paper "mean field game theoretic edge caching in ultra dense networks"):
  with members:
    - "ultra dense edge caching under spatio temporal demand and network dynamics"
    - "ultra dense small cell networks turning density into energy efficiency"
    - "fundamental storage latency tradeoff in cache aided mimo interference networks"
    - "caching in wireless small cell networks a storage bandwidth tradeoff"
    - "wireless content caching for small cell and d2d networks"
    - "tractable resource management with uplink decoupled millimeter wave overlay in ultra dense cellular networks"
    - "mean field games for distributed caching in ultra dense small cell networks"
    - "beyond the ultra dense barrier paradigm shifts on the road beyond 1000x wireless capacity"

Connected through hyperedge HE-8 (induced by source paper "on minimizing energy consumption for d2d clustered caching networks"):
  with members:
    - "inter cluster cooperation for wireless d2d caching networks"
    - "optimal caching and scheduling for cache enabled d2d communications"
    - "delay analysis for wireless d2d caching with inter cluster cooperation"
    - "energy efficiency of downlink networks with caching at base stations"
    - "modeling and performance analysis of clustered device to device networks"
    - "asymptotics and approximation of the sir distribution in general cellular networks"
    - "optimal geographic caching in cellular networks"
    - "base station assisted device to device communications for high throughput wireless video 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)