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: "robochain a secure data sharing framework for human robot interaction"
  Abstract: This project has received funding from the European Union’s Horizon#R##N#2020 research and innovation programme under the Marie#R##N#Sklodowska-Curie grant agreement No. 751615 and No. 701236.

Connected through hyperedge HE-1 (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"
    - "an architecture for distributed ledger based m2m auditing for electric autonomous vehicles"
    - "smart contracts for multiagent plan execution in untrusted cyber physical systems"
    - "towards blockchain based robonomics autonomous agents behavior validation"

Connected through hyperedge HE-2 (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"
    - "smart contracts for multiagent plan execution in untrusted cyber physical systems"
    - "towards blockchain based robonomics autonomous agents behavior validation"
    - "the blockchain a new framework for robotic swarm systems"

Connected through hyperedge HE-3 (induced by source paper "controlling robots using artificial intelligence and a consortium blockchain"):
  with members:
    - "an overview of blockchain integration with robotics and artificial intelligence"
    - "personalized machine learning for robot perception of affect and engagement in autism therapy"
    - "the blockchain a new framework for robotic swarm systems"

Connected through hyperedge HE-4 (induced by source paper "a time segmented consortium blockchain for robotic event registration"):
  with members:
    - "controlling robots using artificial intelligence and a consortium blockchain"
    - "towards blockchain based robonomics autonomous agents behavior validation"
    - "the blockchain a new framework for robotic swarm systems"

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)