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: "analysis of the communication traffic for blockchain synchronization of iot devices"
  Abstract: Blockchain is a technology uniquely suited to support massive number of transactions and smart contracts within the Internet of Things (IoT) ecosystem, thanks to the decentralized accounting mechanism. In a blockchain network, the states of the accounts are stored and updated by the validator nodes, interconnected in a peer-to-peer fashion. IoT devices are characterized by relatively low computing capabilities and low power consumption, as well as sporadic and low-bandwidth wireless connectivity. An IoT device connects to one or more validator nodes to observe or modify the state of the accounts. In order to interact with the most recent state of accounts, a device needs to be synchronized with the blockchain copy stored by the validator nodes. In this work, we describe general architectures and synchronization protocols that enable synchronization of the IoT endpoints to the blockchain, with different communication costs and security levels. We model and analytically characterize the traffic generated by the synchronization protocols, and also investigate the power consumption and synchronization trade-off via numerical simulations. To the best of our knowledge, this is the first study that rigorously models the role of wireless connectivity in blockchain-powered IoT systems.

Connected through hyperedge HE-1 (induced by source paper "computation offloading in the untrusted mec aided mobile blockchain iot system"):
  with members:
    - "when internet of things meets blockchain challenges in distributed consensus"
    - "blockchain for internet of things a survey"
    - "delay and communication tradeoffs for blockchain systems with lightweight iot clients"
    - "auction mechanisms in cloud fog computing resource allocation for public blockchain networks"
    - "cloud fog computing resource management and pricing for blockchain networks"
    - "when mobile blockchain meets edge computing"
    - "a survey on mobile edge computing the communication perspective"
    - "social welfare maximization auction in edge computing resource allocation for mobile blockchain"

Connected through hyperedge HE-2 (induced by source paper "on the convergence of blockchain and internet of things iot technologies"):
  with members:
    - "blockchain technologies for the internet of things research issues and challenges"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "blockchain based smart contracts a systematic mapping study"
    - "proof of work without all the work"
    - "blockchain in internet of things challenges and solutions"
    - "bitcoin ng a scalable blockchain protocol"
    - "majority is not enough bitcoin mining is vulnerable"

Connected through hyperedge HE-3 (induced by source paper "communication aspects of the integration of wireless iot devices with distributed ledger technology"):
  with members:
    - "analysis of lorawan uplink with multiple demodulating paths and capture effect"
    - "delay and communication tradeoffs for blockchain systems with lightweight iot clients"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "bitcoin payment channels for resource limited iot devices"
    - "distributed proportional fairness control in microgrids via blockchain smart contracts"
    - "massive machine type communications in 5g physical and mac layer solutions"

Connected through hyperedge HE-4 (induced by source paper "repeat authenticate scheme for multicasting of blockchain information in iot systems"):
  with members:
    - "communication aspects of the integration of wireless iot devices with distributed ledger technology"
    - "delay and communication tradeoffs for blockchain systems with lightweight iot clients"

Connected through hyperedge HE-5 (induced by source paper "blockchains meet distributed hash tables decoupling validation from state storage"):
  with members:
    - "ipfs content addressed versioned p2p file system"

Connected through hyperedge HE-6 (induced by source paper "blockchained on device federated learning"):
  with members:
    - "distributed federated learning for ultra reliable low latency vehicular communications"
    - "wireless network intelligence at the edge"
    - "optimal auction for edge computing resource management in mobile blockchain networks a deep learning approach"
    - "revisiting frequency reuse towards supporting ultra reliable ubiquitous rate communication"
    - "communication efficient learning of deep networks from decentralized data"
    - "federated optimization distributed machine learning for on device intelligence"
    - "communication efficient distributed optimization using an approximate newton type method"

Connected through hyperedge HE-7 (induced by source paper "delay and communication tradeoffs for blockchain systems with lightweight iot clients"):
  with members:
    - "smart contract based access control for the internet of things"
    - "social signals in the ethereum trading network"
    - "distributed proportional fairness control in microgrids via blockchain smart contracts"
    - "novel market approach for locally balancing renewable energy production and flexible demand"
    - "update or wait how to keep your data fresh"
    - "massive machine type communications in 5g physical and mac layer solutions"

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)