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: "relieving the wireless infrastructure when opportunistic networks meet guaranteed delays"
  Abstract: Major wireless operators are nowadays facing network capacity issues in striving to meet the growing demands of mobile users. At the same time, 3G-enabled devices increasingly benefit from ad hoc radio connectivity (e.g., Wi-Fi). In this context of hybrid connectivity, we propose Push-and-track, a content dissemination framework that harnesses ad hoc communication opportunities to minimize the load on the wireless infrastructure while guaranteeing tight delivery delays. It achieves this through a control loop that collects user-sent acknowledgements to determine if new copies need to be reinjected into the network through the 3G interface. Push-and-Track includes multiple strategies to determine how many copies of the content should be injected, when, and to whom. The short delay-tolerance of common content, such as news or road traffic updates, make them suitable for such a system. Based on a realistic large-scale vehicular dataset from the city of Bologna composed of more than 10,000 vehicles, we demonstrate that Push-and-Track consistently meets its delivery objectives while reducing the use of the 3G network by over 90%.

Connected through hyperedge HE-1 (induced by source paper "show me the cache optimizing cache friendly recommendations for sequential content access"):
  with members:
    - "a learning based approach to joint content caching and recommendation at base stations"
    - "effects of content popularity on the performance of content centric opportunistic networking an analytical approach and applications"
    - "collaborative multi bitrate video caching and processing in mobile edge computing networks"
    - "soft cache hits and the impact of alternative content recommendations on mobile edge caching"
    - "placing dynamic content in caches with small population"
    - "finite length analysis of caching aided coded multicasting"
    - "living on the edge the role of proactive caching in 5g wireless networks"
    - "fundamental limits of caching"

Connected through hyperedge HE-2 (induced by source paper "femto caching with soft cache hits improving performance through recommendation and delivery of related content"):
  with members:
    - "cache enabled opportunistic cooperative mimo for video streaming in wireless systems"
    - "fundamental limits of caching"
    - "femtocaching wireless video content delivery through distributed caching helpers"

Connected through hyperedge HE-3 (induced by source paper "device aware routing and scheduling in multi hop device to device networks"):
  with members:
    - "a survey on device to device communication in cellular networks"
    - "content centric routing in wi fi direct multi group networks"

Connected through hyperedge HE-4 (induced by source paper "soft cache hits and the impact of alternative content recommendations on mobile edge caching"):
  with members:
    - "effects of content popularity on the performance of content centric opportunistic networking an analytical approach and applications"
    - "wireless caching technical misconceptions and business barriers"
    - "placing dynamic content in caches with small population"
    - "five disruptive technology directions for 5g"
    - "fundamental limits of caching"
    - "femtocaching wireless video content delivery through distributed caching helpers"

Connected through hyperedge HE-5 (induced by source paper "effects of content popularity on the performance of content centric opportunistic networking an analytical approach and applications"):
  with members:
    - "modeling spatial and temporal dependencies of user mobility in wireless mobile networks"

Connected through hyperedge HE-6 (induced by source paper "offloading on the edge analysis and optimization of local data storage and offloading in hetnets"):
  with members:
    - "a survey on device to device communication in cellular networks"
    - "femtocaching and device to device collaboration a new architecture for wireless video distribution"
    - "femtocell networks a survey"
    - "modeling spatial and temporal dependencies of user mobility in wireless mobile networks"

Connected through hyperedge HE-7 (induced by source paper "microcast cooperative video streaming using cellular and d2d connections"):
  with members:
    - "minimum cost multicast over coded packet networks"

Connected through hyperedge HE-8 (induced by source paper "content distribution strategies in opportunistic networks"):
  with members:
    - "ganc greedy agglomerative normalized cut"

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)