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: "the blockchain a new framework for robotic swarm systems"
  Abstract: Swarms of robots will revolutionize many industrial applications, from targeted material delivery to precision farming. However, several of the heterogeneous characteristics that make them ideal for certain future applications—robot autonomy, decentralized control, collective emergent behavior, etc.—hinder the evolution of the technology from academic institutions to real-world problems. Blockchain, an emerging technology originated in the Bitcoin field, demonstrates that by combining peer-to-peer networks with cryptographic algorithms a group of agents can reach an agreement on a particular state of affairs and record that agreement without the need for a controlling authority. The combination of blockchain with other distributed systems, such as robotic swarm systems, can provide the necessary capabilities to make robotic swarm operations more secure, autonomous, flexible and even profitable. This position paper explains how blockchain technology can provide innovative solutions to four emergent issues in the swarm robotics research field. New security, decision making, behavior differentiation and business models for swarm robotic systems are described by providing case scenarios and examples. Finally, limitations and possible future problems that arise from the combination of these two technologies are described.

Connected through hyperedge HE-1 (induced by source paper "on the convergence of artificial intelligence and distributed ledger technology a scoping review and future research agenda"):
  with members:
    - "ekiden a platform for confidentiality preserving trustworthy and performant smart contracts"
    - "energy recycling blockchain with proof of deep learning"
    - "decentralized and collaborative ai on blockchain"
    - "sok transparent dishonesty front running attacks on blockchain"
    - "reliable federated learning for mobile networks"
    - "keystone an open framework for architecting tees"
    - "tensorscone a secure tensorflow framework using intel sgx"
    - "coin ai a proof of useful work scheme for blockchain based distributed deep learning"

Connected through hyperedge HE-2 (induced by source paper "directions for explainable knowledge enabled systems"):
  with members:
    - "explaining explanations in ai"
    - "explaining explanations an overview of interpretability of machine learning"
    - "blockchain and artificial intelligence"
    - "explanation in artificial intelligence insights from the social sciences"
    - "what does explainable ai really mean a new conceptualization of perspectives"
    - "accountability of ai under the law the role of explanation"
    - "the mythos of model interpretability"
    - "why should i trust you explaining the predictions of any classifier"

Connected through hyperedge HE-3 (induced by source paper "towards blockchain based multi agent robotic systems analysis classification and applications"):
  with members:
    - "a reference architecture for smart and software defined buildings"
    - "interacting with the internet of things using smart contracts and blockchain technologies"
    - "controlling robots using artificial intelligence and a consortium blockchain"
    - "blockchain solutions for multi agent robotic systems related work and open questions"
    - "towards the internet of robotic things analysis architecture components and challenges"
    - "robochain a secure data sharing framework for human robot interaction"
    - "an architecture for distributed ledger based m2m auditing for electric autonomous vehicles"
    - "smart contracts for multiagent plan execution in untrusted cyber physical systems"

Connected through hyperedge HE-4 (induced by source paper "blockchain for the internet of things present and future"):
  with members:
    - "machine learning for wireless communications in the internet of things a comprehensive survey"
    - "block4forensic an integrated lightweight blockchain framework for forensics applications of connected vehicles"
    - "securing the internet of things in the age of machine learning and software defined networking"
    - "smart contract based access control for the internet of things"
    - "quality of information in mobile crowdsensing survey and research challenges"
    - "lsb a lightweight scalable blockchain for iot security and privacy"
    - "learning to detect and mitigate cross layer attacks in wireless networks framework and applications"
    - "blockchain a distributed solution to automotive security and privacy"

Connected through hyperedge HE-5 (induced by source paper "towards the uses of blockchain in mobile health services and applications a survey"):
  with members:
    - "controlling robots using artificial intelligence and a consortium blockchain"
    - "a scalable verification solution for blockchains"
    - "an overview of blockchain integration with robotics and artificial intelligence"
    - "a microservice enabled architecture for smart surveillance using blockchain technology"
    - "a survey on the security of blockchain systems"
    - "blockchain and artificial intelligence"
    - "blockchain for cities a systematic literature review"
    - "decentralized applications the blockchain empowered software system"

Connected through hyperedge HE-6 (induced by source paper "blockchain powered collaboration in heterogeneous swarms of robots"):
  with members:
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "incentives in ethereum s hybrid casper protocol"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "a survey on the security of blockchain systems"
    - "a byzantine fault tolerant ordering service for the hyperledger fabric blockchain platform"
    - "casper the friendly finality gadget"
    - "end to end learning for self driving cars"
    - "cryptocurrencies without proof of work"

Connected through hyperedge HE-7 (induced by source paper "the rise of blockchain technology in agriculture and food supply chains"):
  with members:
    - "blockchain in global supply chains and cross border trade a critical synthesis of the state of the art challenges and opportunities"
    - "a case study for grain quality assurance tracking based on a blockchain business network"
    - "consensus in the age of blockchains"
    - "a blockchain based decentralized system for proper handling of temporary employment contracts"
    - "bitcoin ng a scalable blockchain protocol"
    - "cryptocurrencies without proof of work"

Connected through hyperedge HE-8 (induced by source paper "blockchain solutions for multi agent robotic systems related work and open questions"):
  with members:
    - "a reference architecture for smart and software defined buildings"
    - "controlling robots using artificial intelligence and a consortium blockchain"
    - "robochain a secure data sharing framework for human robot interaction"
    - "smart contracts for multiagent plan execution in untrusted cyber physical systems"
    - "towards blockchain based robonomics autonomous agents behavior validation"

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.RO(Robotics)