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: "improving spatial codification in semantic segmentation"
  Abstract: This paper explores novel approaches for improving the spatial codification#R##N#for the pooling of local descriptors to solve the semantic#R##N#segmentation problem. We propose to partition the image into three#R##N#regions for each object to be described: Figure, Border and Ground.#R##N#This partition aims at minimizing the influence of the image context#R##N#on the object description and vice versa by introducing an intermediate#R##N#zone around the object contour. Furthermore, we also propose a#R##N#richer visual descriptor of the object by applying a Spatial Pyramid#R##N#over the Figure region. Two novel Spatial Pyramid configurations#R##N#are explored: Cartesian-based and crown-based Spatial Pyramids.#R##N#We test these approaches with state-of-the-art techniques and show#R##N#that they improve the Figure-Ground based pooling in the Pascal#R##N#VOC 2011 and 2012 semantic segmentation challenges.

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)