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: "2d time frequency interference modelling using stochastic geometry for performance evaluation in low power wide area networks"
  Abstract: In wireless networks, interferences between trans- missions are modelled either in time or frequency domain. In this article, we jointly analyze interferences in the time- frequency domain using a stochastic geometry model assuming the total time-frequency resources to be a two-dimensional plane and transmissions from Internet of Things (IoT) devices time- frequency patterns on this plane. To evaluate the interference, we quantify the overlap between the information packets: provided that the overlap is not too strong, the packets are not necessarily lost due to capture effect. This flexible model can be used for multiple medium access scenarios and is especially adapted to the random time-frequency access schemes used in Low-Power Wide-Area Networks (LPWANs). By characterizing the outage probability and throughput, our approach permits to evaluate the performance of two representative LPWA technologies Sigfox{\textsuperscript \textregistered} and LoRaWA{\textsuperscript \textregistered}.

Connected through hyperedge HE-1 (induced by source paper "optimal secure two layer iot network design"):
  with members:
    - "interdependent strategic security risk management with bounded rationality in the internet of things"
    - "istrict an interdependent strategic trust mechanism for the cloud enabled internet of controlled things"
    - "distributed and optimal resilient planning of large scale interdependent critical infrastructures"
    - "a dynamic game analysis and design of infrastructure network protection and recovery 125"
    - "resilient and decentralized control of multi level cooperative mobile networks to maintain connectivity under adversarial environment"

Connected through hyperedge HE-2 (induced by source paper "optimized resource provisioning and operation control for low power wide area iot networks"):
  with members:
    - "poisson cluster process bridging the gap between ppp and 3gpp hetnet models"
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "grant free radio access iot networks scalability analysis in coexistence scenarios"
    - "multiple access for 5g new radio categorization evaluation and challenges"
    - "wireless access for ultra reliable low latency communication urllc principles and building blocks"
    - "energy efficient scheduling and grouping for machine type communications over cellular networks"
    - "non orthogonal multiple access noma in cellular uplink and downlink challenges and enabling techniques"
    - "interference and outage in clustered wireless ad hoc networks"

Connected through hyperedge HE-3 (induced by source paper "performance evaluation and optimization of lpwa iot networks a stochastic geometry approach"):
  with members:
    - "optimized resource provisioning and operation control for low power wide area iot networks"
    - "grant free radio access for short packet communications over 5g networks"
    - "poisson cluster process bridging the gap between ppp and 3gpp hetnet models"
    - "grant free radio access iot networks scalability analysis in coexistence scenarios"
    - "network lifetime maximization for cellular based m2m networks"
    - "non orthogonal multiple access noma in cellular uplink and downlink challenges and enabling techniques"
    - "e 2 mac energy efficient medium access for massive m2m communications"
    - "interference and outage in clustered wireless ad hoc networks"

Connected through hyperedge HE-4 (induced by source paper "optimal dynamic contract for spectrum reservation in mission critical unb iot systems"):
  with members:
    - "an enhanced access reservation protocol with a partial preamble transmission mechanism in nb iot systems"
    - "adaptive and resilient revenue maximizing dynamic resource allocation and pricing for cloud enabled iot systems"
    - "optimizing mission critical data dissemination in massive iot networks"
    - "spectrum reservation contract design in tv white space networks"

Connected through hyperedge HE-5 (induced by source paper "grant free radio access iot networks scalability analysis in coexistence scenarios"):
  with members:
    - "grant free radio access for short packet communications over 5g networks"
    - "on lorawan scalability empirical evaluation of susceptibility to inter network interference"
    - "lorawan in the wild measurements from the things network"
    - "low power wide area network analysis can lora scale"
    - "e 2 mac energy efficient medium access for massive m2m communications"
    - "understanding the limits of lorawan"
    - "long range communications in unlicensed bands the rising stars in the iot and smart city scenarios"

Connected through hyperedge HE-6 (induced by source paper "grant free radio access for short packet communications over 5g networks"):
  with members:
    - "enhancing contention resolution aloha using combining techniques"
    - "exploiting combination techniques in random access mac protocols enhanced contention resolution aloha"
    - "e 2 mac energy efficient medium access for massive m2m communications"

Connected through hyperedge HE-7 (induced by source paper "an analytical model for s aloha performance evaluation in m2m networks"):
  with members:
    - "a tractable model of the lte access reservation procedure for machine type communications"

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)