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 more realistic human robot conversation a seq2seq based body gesture interaction system"
  Abstract: This paper presents a novel method to improve the conversational interaction abilities of intelligent robots to enable more realistic body gestures. The sequence-to-sequence (seq2seq) model is adapted for synthesizing the robots' body gestures represented by the movements of twelve upper-body keypoints in not only the speaking phase, but also the listening phase for which previous methods can hardly achieve. We collected and preprocessed substantial videos of human conversation from Youtube to train our seq2seq-based models and evaluated them by the mean squared error (MSE) and cosine similarity on the test set. The tuned models were implemented to drive a virtual avatar as well as a physical humanoid robot, to demonstrate the improvement on interaction abilities of our method in practice. With body gestures synthesized by our models, the avatar and Pepper exhibited more intelligently while communicating 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.CV(Computer Vision and Pattern Recognition)