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: "uav enabled iot systems noma or oma"
  Abstract: This paper investigates unmanned aerial vehicle (UAV) enabled Internet-of-Things (IoT) systems with a couple of multiple access schemes, where a rotary-wing UAV is dispatched to collect data from multiple IoT devices. Our goal is to maximize the minimum UAV data collection throughput from IoT devices for both orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) schemes, subject to the energy budgets of both the UAV and IoT devices. 1) For the OMA scheme, we propose an efficient algorithm by invoking alternating optimization (AO) method, where each subproblems are alternatively solved by applying successive convex approximation (SCA) technique. 2) For the NOMA scheme, we first handle subproblems with fixed decoding order with SCA technique. Then, we design a penalty-based algorithm to solve the decoding order design subproblem. Thus, we propose another AO-based algorithm to derive a locally optimal solution for the NOMA scheme. Numerical results illustrate that: 1) the proposed algorithms improve the max-min throughput performance compared with other benchmark schemes; 2) the NOMA scheme always achieves no worse performance than that of the OMA scheme.

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.IT(Information Theory)