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: "a provably efficient online collaborative caching algorithm for multicell coordinated systems"
  Abstract: Caching at the base stations brings the contents closer to the users, reduces the traffic through the backhaul links, and reduces the delay experienced by the cellular users. The cellular network operator may charge the content providers for caching their contents. Moreover, content providers may lose their users if the users are not getting their desired quality of service, such as maximum tolerable delay in Video on Demand services. In this paper, we study the collaborative caching problem for a multicell-coordinated system from the point of view of minimizing the total cost paid by the content providers. We formulate the problem as an Integer Linear Program and prove its NP-completeness. We also provide an online caching algorithm that does not require any knowledge about the contents popularities. We prove that the online algorithm achieves a competitive ratio of $\mathcal{O}(\log(n))$, and we show that the best competitive ratio that any online algorithm can achieve is $\Omega(\frac{\log(n)}{\log\log(n)})$. Therefore, our proposed caching algorithm is provably efficient. Through simulations, we show that our online algorithm performs very close to the optimal offline collaborative scheme, and can outperform it when contents popularities are not properly estimated.

Connected through hyperedge HE-1 (induced by source paper "a rolling horizon dynamic programming approach for collaborative caching"):
  with members:
    - "popnetcod a popularity based caching policy for network coding enabled named data networking"
    - "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"
    - "context aware proactive content caching with service differentiation in wireless networks"
    - "wireless content caching for small cell and d2d networks"
    - "joint caching routing and channel assignment for collaborative small cell cellular networks"

Connected through hyperedge HE-2 (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"
    - "cooperative local caching under heterogeneous file preferences"

Connected through hyperedge HE-3 (induced by source paper "caching policy optimization for d2d communications by learning user preference"):
  with members:
    - "caching at the wireless edge design aspects challenges and future directions"
    - "wireless device to device caching networks basic principles and system performance"
    - "energy saving pushing based on personal interest and context information"
    - "placing dynamic content in caches with small population"
    - "optimal geographic caching in cellular networks"
    - "cooperative local caching and file sharing under heterogeneous file preferences"
    - "learning based optimization of cache content in a small cell base station"
    - "living on the edge the role of proactive caching in 5g wireless networks"

Connected through hyperedge HE-4 (induced by source paper "optimal geographic caching in cellular networks with linear content coding"):
  with members:
    - "on the delay of geographical caching methods in two tiered heterogeneous networks"
    - "optimization of caching devices with geometric constraints"
    - "optimal geographic caching in cellular networks"
    - "femtocaching and device to device collaboration a new architecture for wireless video distribution"

Connected through hyperedge HE-5 (induced by source paper "collaborative multi bitrate video caching and processing in mobile edge computing networks"):
  with members:
    - "delay optimal computation task scheduling for mobile edge computing systems"
    - "dynamic computation offloading for mobile edge computing with energy harvesting devices"
    - "octopus a cooperative hierarchical caching strategy for cloud radio access networks"
    - "joint caching and pricing strategies for popular content in information centric networks"
    - "cooperative hierarchical caching in 5g cloud radio access networks c rans"
    - "living on the edge the role of proactive caching in 5g wireless networks"
    - "impact of traffic mix on caching performance in a content centric network"
    - "femtocaching wireless video content delivery through distributed caching helpers"

Connected through hyperedge HE-6 (induced by source paper "delay analysis and optimization in cache enabled multi cell cooperative networks"):
  with members:
    - "the three primary colors of mobile systems"
    - "joint pushing and caching with a finite receiver buffer optimal policies and throughput analysis"
    - "optimal caching placement for d2d assisted wireless caching networks"
    - "analysis on cache enabled wireless heterogeneous networks"
    - "on content centric wireless delivery networks"
    - "fundamental limits of caching"

Connected through hyperedge HE-7 (induced by source paper "cooperative hierarchical caching in 5g cloud radio access networks c rans"):
  with members:
    - "fog computing based radio access networks issues and challenges"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "content centric multicast beamforming in cache enabled cloud radio access networks"
    - "living on the edge the role of proactive caching in 5g wireless networks"
    - "femtocaching wireless video content delivery through distributed caching helpers"

Connected through hyperedge HE-8 (induced by source paper "octopus a cooperative hierarchical caching strategy for cloud radio access networks"):
  with members:
    - "dynamic radio cooperation for downlink cloud rans with computing resource sharing"
    - "living on the edge the role of proactive caching in 5g wireless networks"
    - "femtocaching wireless video content delivery through distributed caching helpers"

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.NI(Networking and Internet Architecture)