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: "performance analysis and application of mobile blockchain"
  Abstract: Mobile security has become more and more important due to the boom of mobile commerce (m-commerce). However, the development of m-commerce is facing many challenges regarding data security problems. Recently, blockchain has been introduced as an effective security solution deployed successfully in many applications in practice, such as, Bitcoin, cloud computing, and Internet-of-Things. However, the blockchain technology has not been adopted and implemented widely in m-commerce because its mining processes usually require to be performed on standard computing units, e.g., computers. Therefore, in this paper, we introduce a new m-commerce application using blockchain technology, namely, MobiChain, to secure transactions in the m-commerce. Especially, in the MobiChain application, the mining processes can be executed efficiently on mobile devices using our proposed Android core module. Through real experiments, we evaluate the performance of the proposed model and show that blockchain will be an efficient security solution for future m-commerce.

Connected through hyperedge HE-1 (induced by source paper "a survey on consensus mechanisms and mining strategy management in blockchain networks"):
  with members:
    - "decentralization in bitcoin and ethereum networks"
    - "information and communications technologies for sustainable development goals state of the art needs and perspectives"
    - "a scale out blockchain for value transfer with spontaneous sharding"
    - "a survey on security and privacy issues of bitcoin"
    - "on cyber risk management of blockchain networks a game theoretic approach"
    - "scaling nakamoto consensus to thousands of transactions per second"
    - "competitive data trading in wireless powered internet of things iot crowdsensing systems with blockchain"
    - "blockchained on device federated learning"

Connected through hyperedge HE-2 (induced by source paper "performance analysis of blockchain systems with wireless mobile miners"):
  with members:
    - "blockchain for internet of things a survey"
    - "blockchained on device federated learning"
    - "when mobile blockchain meets edge computing"
    - "mobile unmanned aerial vehicles uavs for energy efficient internet of things communications"

Connected through hyperedge HE-3 (induced by source paper "performance analysis of the libra blockchain an experimental study"):
  with members:
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "performance benchmarking and optimizing hyperledger fabric blockchain platform"
    - "untangling blockchain a data processing view of blockchain systems"

Connected through hyperedge HE-4 (induced by source paper "user acceptance of usable blockchain based research data sharing system an extended tam based study"):
  with members:
    - "user data sharing frameworks a blockchain based incentive solution"
    - "user controlled privacy preserving user profile data sharing based on blockchain"
    - "on and off blockchain enforcement of smart contracts"

Connected through hyperedge HE-5 (induced by source paper "blockchain goes green an analysis of blockchain on low power nodes"):
  with members:
    - "blockbench a framework for analyzing private blockchains"

Connected through hyperedge HE-6 (induced by source paper "auction mechanisms in cloud fog computing resource allocation for public blockchain networks"):
  with members:
    - "towards blockchain based auditable storage and sharing of iot data"
    - "when mobile blockchain meets edge computing"
    - "optimal pricing based edge computing resource management in mobile blockchain"
    - "hardening stratum the bitcoin pool mining protocol"
    - "social welfare maximization auction in edge computing resource allocation for mobile blockchain"
    - "toward hierarchical mobile edge computing an auction based profit maximization approach"
    - "optimal auction for edge computing resource management in mobile blockchain networks a deep learning approach"
    - "untangling blockchain a data processing view of blockchain systems"

Connected through hyperedge HE-7 (induced by source paper "cloud fog computing resource management and pricing for blockchain networks"):
  with members:
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "a survey on security and privacy issues of bitcoin"
    - "on cyber risk management of blockchain networks a game theoretic approach"
    - "decentralized caching for content delivery based on blockchain a game theoretic perspective"
    - "when mobile blockchain meets edge computing"
    - "optimal pricing based edge computing resource management in mobile blockchain"
    - "hardening stratum the bitcoin pool mining protocol"
    - "enorm a framework for edge node resource management"

Connected through hyperedge HE-8 (induced by source paper "optimal pricing based edge computing resource management in mobile blockchain"):
  with members:
    - "a survey on security and privacy issues of bitcoin"
    - "cloud fog computing resource management and pricing for blockchain networks"
    - "offloading in software defined network at edge with information asymmetry a contract theoretical approach"

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.CR(Cryptography and Security)