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: "grant free radio access iot networks scalability analysis in coexistence scenarios"
  Abstract: IoT networks with grant-free radio access, like SigFox and LoRa, offer low-cost durable communications over unlicensed band. These networks are becoming more and more popular due to the ever-increasing need for ultra durable, in terms of battery lifetime, IoT networks. Most studies evaluate the system performance assuming single radio access technology deployment. In this paper, we study the impact of coexisting competing radio access technologies on the system performance. Considering $\mathpzc K$ technologies, defined by time and frequency activity factors, bandwidth, and power, which share a set of radio resources, we derive closed-form expressions for the successful transmission probability, expected battery lifetime, and experienced delay as a function of distance to the serving access point. Our analytical model, which is validated by simulation results, provides a tool to evaluate the coexistence scenarios and analyze how introduction of a new coexisting technology may degrade the system performance in terms of success probability and battery lifetime. We further investigate solutions in which this destructive effect could be compensated, e.g., by densifying the network to a certain extent and utilizing joint reception.

Connected through hyperedge HE-1 (induced by source paper "space diversity based grant free random access for critical and non critical iot services"):
  with members:
    - "multiple relay slotted aloha performance analysis and bounds"
    - "modern random access for beyond 5g systems a multiple relay aloha perspective"
    - "information centric grant free access for iot fog networks edge vs cloud detection and learning"
    - "non orthogonal multiplexing of ultra reliable and broadband services in fog radio architectures"
    - "5g wireless network slicing for embb urllc and mmtc a communication theoretic view"
    - "grant free radio access for short packet communications over 5g networks"
    - "two user erasure interference channels with local delayed csit"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"

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"
    - "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"
    - "2d time frequency interference modelling using stochastic geometry for performance evaluation in low power wide area networks"
    - "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"
    - "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"
    - "2d time frequency interference modelling using stochastic geometry for performance evaluation in low power wide area networks"
    - "interference and outage in clustered wireless ad hoc networks"

Connected through hyperedge HE-4 (induced by source paper "self organized low power iot networks a distributed learning approach"):
  with members:
    - "iot security techniques based on machine learning"
    - "optimized resource provisioning and operation control for low power wide area iot networks"
    - "low power wide area network analysis can lora scale"
    - "energy efficient scheduling and grouping for machine type communications over cellular networks"
    - "the best of both worlds stochastic and adversarial bandits"

Connected through hyperedge HE-5 (induced by source paper "survey of spectrum sharing for inter technology coexistence"):
  with members:
    - "network slicing based 5g and future mobile networks mobility resource management and challenges"
    - "inter technology coexistence in a spectrum commons a case study of wi fi and lte in the 5 ghz unlicensed band"
    - "fair coexistence of scheduled and random access wireless networks unlicensed lte wifi"
    - "ieee 802 11ax high efficiency wlans"
    - "embedding lte u within wi fi bands for spectrum efficiency improvement"
    - "mu mimo mac protocols for wireless local area networks a survey"
    - "modeling and analyzing the coexistence of wi fi and lte in unlicensed spectrum"
    - "performance analysis of license assisted access lte with asymmetric hidden terminals"

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)