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: "towards the safety of human in the loop robotics challenges and opportunities for safety assurance of robotic co workers"
  Abstract: The success of the human-robot co-worker team in a flexible manufacturing environment where robots learn from demonstration heavily relies on the correct and safe operation of the robot. How this can be achieved is a challenge that requires addressing both technical as well as human-centric research questions. In this paper we discuss the state of the art in safety assurance, existing as well as emerging standards in this area, and the need for new approaches to safety assurance in the context of learning machines. We then focus on robotic learning from demonstration, the challenges these techniques pose to safety assurance and indicate opportunities to integrate safety considerations into algorithms "by design". Finally, from a human-centric perspective, we stipulate that, to achieve high levels of safety and ultimately trust, the robotic co-worker must meet the innate expectations of the humans it works with. It is our aim to stimulate a discussion focused on the safety aspects of human-in-the-loop robotics, and to foster multidisciplinary collaboration to address the research challenges identified.

Connected through hyperedge HE-1 (induced by source paper "effects of faults experience and personality on trust in a robot co worker"):
  with members:
    - "believing in bert using expressive communication to enhance trust and counteract operational error in physical human robot interaction"

Connected through hyperedge HE-2 (induced by source paper "a corroborative approach to verification and validation of human robot teams"):
  with members:
    - "formal verification of obstacle avoidance and navigation of ground robots"
    - "testing verification and improvements of timeliness in ros processes"
    - "a model for safety case confidence assessment"
    - "coverage driven verification an approach to verify code for robots that directly interact with humans"
    - "systematic and realistic testing in simulation of control code for robots in collaborative human robot interactions"

Connected through hyperedge HE-3 (induced by source paper "an assurance based approach to verification and validation of human robot teams"):
  with members:
    - "testing verification and improvements of timeliness in ros processes"
    - "code generator composition for model driven engineering of robotics component connector systems"
    - "a model for safety case confidence assessment"
    - "coverage driven verification an approach to verify code for robots that directly interact with humans"

Connected through hyperedge HE-4 (induced by source paper "model based test generation for robotic software automata versus belief desire intention agents"):
  with members:
    - "intelligent agent based stimulation for testing robotic software in human robot interactions"
    - "coverage driven verification an approach to verify code for robots that directly interact with humans"
    - "systematic and realistic testing in simulation of control code for robots in collaborative human robot interactions"

Connected through hyperedge HE-5 (induced by source paper "intelligent agent based stimulation for testing robotic software in human robot interactions"):
  with members:
    - "coverage driven verification an approach to verify code for robots that directly interact with humans"
    - "systematic and realistic testing in simulation of control code for robots in collaborative human robot interactions"
    - "practical verification of decision making in agent based autonomous systems"

Connected through hyperedge HE-6 (induced by source paper "model based testing using belief desire intentions agents of control code for robots in collaborative human robot interactions"):
  with members:
    - "coverage driven verification an approach to verify code for robots that directly interact with humans"

Connected through hyperedge HE-7 (induced by source paper "systematic and realistic testing in simulation of control code for robots in collaborative human robot interactions"):
  with members:
    - "coverage driven verification an approach to verify code for robots that directly interact with humans"

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)