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: "cooperation and storage tradeoffs in power grids with renewable energy resources"
  Abstract: One of the most important challenges in smart grid systems is the integration of renewable energy resources into its design. In this paper, two different techniques to mitigate the time-varying and intermittent nature of renewable energy generation are considered. The first one is the use of storage, which smooths out the fluctuations in the renewable energy generation across time. The second technique is the concept of distributed generation combined with cooperation by exchanging energy among the distributed sources. This technique averages out the variation in energy production across space. This paper analyzes the tradeoff between these two techniques. The problem is formulated as a stochastic optimization problem with the objective of minimizing the time average cost of energy exchange within the grid. First, an analytical model of the optimal cost is provided by investigating the steady state of the system for some specific scenarios. Then, an algorithm to solve the cost minimization problem using the technique of Lyapunov optimization is developed, and results for the performance of the algorithm are provided. These results show that in the presence of limited storage devices, the grid can benefit greatly from cooperation, whereas in the presence of large storage capacity, cooperation does not yield much benefit. Further, it is observed that most of the gains from cooperation can be obtained by exchanging energy only among a few energy-harvesting sources.

Connected through hyperedge HE-1 (induced by source paper "peer to peer energy trading with sustainable user participation a game theoretic approach"):
  with members:
    - "managing price uncertainty in prosumer centric energy trading a prospect theoretic stackelberg game approach"
    - "customer engagement plans for peak load reduction in residential smart grids"
    - "energy storage sharing in smart grid a modified auction based approach"
    - "towards a consumer centric grid a behavioral perspective"
    - "price discrimination for energy trading in smart grid a game theoretic approach"
    - "prioritizing consumers in smart grid a game theoretic approach"
    - "three party energy management with distributed energy resources in smart grid"
    - "coalitional games with overlapping coalitions for interference management in small cell networks"

Connected through hyperedge HE-2 (induced by source paper "online geographical load balancing for mobile edge computing with energy harvesting"):
  with members:
    - "online learning for offloading and autoscaling in energy harvesting mobile edge computing"
    - "a survey on mobile edge computing the communication perspective"
    - "socially trusted collaborative edge computing in ultra dense networks"
    - "networked mimo with fractional joint transmission in energy harvesting systems"
    - "energy harvesting wireless communications a review of recent advances"
    - "a lyapunov optimization approach for green cellular networks with hybrid energy supplies"
    - "optimal power cost management using stored energy in data centers"

Connected through hyperedge HE-3 (induced by source paper "energy trading between microgrids individual cost minimization and social welfare maximization"):
  with members:
    - "virtual machine trading in a federation of clouds individual profit and social welfare maximization"

Connected through hyperedge HE-4 (induced by source paper "dynamic computation offloading for mobile edge computing with energy harvesting devices"):
  with members:
    - "delay optimal computation task scheduling for mobile edge computing systems"
    - "grid energy consumption and qos tradeoff in hybrid energy supply wireless networks"
    - "distributed real time power balancing in renewable integrated power grids with storage and flexible loads"
    - "arq with adaptive feedback for energy harvesting receivers"
    - "power delay tradeoff in multi user mobile edge computing systems"
    - "decentralized computation offloading game for mobile cloud computing"
    - "energy harvesting wireless communications a review of recent advances"
    - "energy harvesting small cell networks feasibility deployment and operation"

Connected through hyperedge HE-5 (induced by source paper "stochastic games for smart grid energy management with prospect prosumers"):
  with members:
    - "load shifting in the smart grid to participate or not"
    - "towards a consumer centric grid a behavioral perspective"
    - "cumulative prospect theory meets reinforcement learning prediction and control"
    - "integrating energy storage into the smart grid a prospect theoretic approach"
    - "a game theoretic approach to energy trading in the smart grid"
    - "optimal power cost management using stored energy in data centers"
    - "learning equilibria with partial information in decentralized wireless networks"

Connected through hyperedge HE-6 (induced by source paper "a lyapunov optimization approach for green cellular networks with hybrid energy supplies"):
  with members:
    - "energy harvesting wireless communications a review of recent advances"
    - "comp meets smart grid a new communication and energy cooperation paradigm"
    - "energy harvesting small cell networks feasibility deployment and operation"
    - "cost minimization for fading channels with energy harvesting and conventional energy"
    - "base station sleeping and resource allocation in renewable energy powered cellular networks"
    - "power allocation for energy harvesting transmitter with causal information"
    - "throughput and energy efficiency analysis of small cell networks with multi antenna base stations"
    - "throughput maximization for the gaussian relay channel with energy harvesting constraints"

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)