human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "energy efficient resource allocation for time varying ofdma relay systems with hybrid energy supplies"):
  Abstract: This paper investigates the energy-efficient resource allocation for orthogonal frequency-division multiple-access relay systems, where the system is supplied by the conventional utility grid and a renewable energy generator equipped with a storage device. The optimal usage of radio resource depends on the characteristics of the renewable energy generation and the mobile traffic, which exhibit both temporal and spatial diversities. The Lyapunov optimization method is used to decompose the problem into the joint flow control, radio resource allocation, and energy management without knowing  a priori  knowledge of system statistics. It is proven that the proposed algorithm can result in close-to-optimal performance with capacity-limited data buffer and storage device. Simulation results show that the flexible tradeoff between the system utility and the conventional energy consumption can be achieved. Compared with other schemes, the proposed algorithm demonstrates better performance.

Includes members:
  Member "cross layer scheduling for ofdma based cognitive radio systems with delay and security constraints":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "tradeoff between delay and physical layer security in wireless networks")
  Member "power allocation for conventional and buffer aided link adaptive relaying systems with energy harvesting nodes":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "distributed power control for delay optimization in energy harvesting cooperative relay networks")
  Member "energy efficient resource allocation in ofdma systems with hybrid energy harvesting base station":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "cross layer scheduling and beamforming in smart grid powered cellular networks with heterogeneous energy coordination")
  Member "maximizing energy efficiency in multi relay ofdma cellular networks":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "distributed energy spectral efficiency optimization for partial full interference alignment in multi user multi relay multi cell mimo systems")
  Member "decentralized delay optimal control for interference networks with limited renewable energy storage":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "optimal time scheduling for wireless powered backscatter communication networks")
  Member "jointly optimal channel and power assignment for dual hop multi channel multi user relaying":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "information and energy cooperation in ofdm relaying protocols and optimization")
  Member "a cross layer perspective on energy harvesting aided green communications over fading channels":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "self sustainability of energy harvesting systems concept analysis and design")
  Member "adaptive power management for wireless base stations in a smart grid environment":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "detecting cyberattacks in industrial control systems using online learning algorithms")

Question: Please tell me which class the source paper 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.DC(Distributed, Parallel, and Cluster Computing)