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: "impact aware online motion planning for fully actuated bipedal robot walking"
  Abstract: Planning and control of legged robots is a difficult problem due to hybrid, high dimensional, and nonlinear dynamics. Legged locomotion planning and control on static platforms have been extensively studied. However, planning and control of legged locomotion on dynamic platforms are scarcely explored. Legged locomotion on dynamic platforms becomes much more complicated due to significant dynamic effects from the platform. In this paper, we present a quadrupedal robot walking on a dynamic platform with sinusoidal motion. In order to capture the complex details of legged locomotion on dynamic platform, we have derived a full-order dynamic model for the robot-platform system. Motion planning for the quadrupedal robot on the dynamic platform is obtained using optimization in Matlab. We have derived a model-based controller for tracking the planned trajectories during the quadrupedal walking on the dynamic platform. We also present the stability analysis for the nonlinear closed-loop hybrid dynamical system with state-triggered jump. The planning and control algorithms are validated in Matlab. The simulation results for the controller implementation are also presented in the paper.

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)