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: "studying the indian mobile internet networks chota recharge and the chota internet"
  Abstract: Uniform and affordable Internet is emerging as one of the fundamental civil rights in developing countries. However in India, the connectivity is far from uniform across the regions, where the disparity is evident in the infrastructure, the cost of access and telecommunication services to provide Internet facilities among different economic classes. In spite of having a large mobile user base, the mobile Internet are still remarkably slower in some of the developing countries. Especially in India, it falls below 50% even in comparison with the performance of its developing counterparts! #R##N#This essay presents a study of connectivity and performance trends based on an exploratory analysis of mobile Internet measurement data from India. In order to assess the state of mobile networks and its readiness in adopting the different mobile standards (2G, 3G, and 4G) for commercial use, we discuss the spread, penetration, interoperability and the congestion trends. Based on our analysis, we argue that the network operators have taken negligible measures to scale the mobile Internet. Affordable Internet is definitely for everyone. But, the affordability of the Internet in terms of cost does not necessarily imply the rightful access to Internet services. #R##N#Chota recharge is possibly leading us to chota (shrunken) Internet!

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.CY(Computers and Society)