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: "a low cost passive visible light communication system"
  Abstract: In this work, we propose a new communication system for illuminated areas, indoors and outdoors. Light sources in our environments -- such as light bulbs or even the sun -- are our signal emitters, but we do not modulate data using the light source. We instead propose that the environment itself modulates the light signals: if any mobile element 'wears' a pattern consisting of distinctive reflecting surfaces, a receiver could decode the disturbed light signals to read passive information. Mobility here is key to transfer the information to the destination, since objects or people passing by will disturb the surrounding light signals. Like barcode readers in our stores, light sources in our environments could be leveraged to monitor logistics and activities in cities and buildings. Achieving this vision requires a deep understanding of a new type of communication channel. Many parameters can affect the performance of passive communication signals based on visible light: the specific patterns of the reflective surfaces, the surrounding light intensity and the speed of the mobile objects, to name a few. In this position paper, we present an initial experimental and analytical approach to tackle some of the main challenges associated with realizing a passive communication channel with visible light.

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.NI(Networking and Internet Architecture)