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 "distributed bilevel energy allocation mechanism with grid constraints and hidden user information"):
  Abstract: A novel distributed energy allocation mechanism for distribution system operator (DSO) market through a bilevel iterative auction is proposed. With the locational marginal price known at the substation node, the DSO runs an upper level auction with aggregators as intermediate agents competing for energy. This DSO level auction takes into account physical grid constraints such as line flows, transformer capacities, and node voltage limits. This auction mechanism is a straightforward implementation of projected gradient descent on the social welfare of all home level agents. Aggregators, which serve home level agents—both buyers and sellers, implement lower level auctions in parallel, through proportional allocation of power, until market equilibrium is established. This is accomplished without asking for the agents’ utility functions and generation capacities that are considered private information. The overall bilevel auction is shown to be globally efficient and weakly budget balanced.

Includes members:
  Member "an iterative on line auction mechanism for aggregated demand side participation":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "incentive compatibility scalability and privacy in real time demand response")
  Member "a day ahead market energy auction for distribution system operation":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "renewable energy integration in distribution system synchrophasor sensor based big data analysis visualization and system operation")
  Member "distribution market clearing and settlement":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "market based versus price based microgrid optimal scheduling")
  Member "prioritizing consumers in smart grid a game theoretic approach":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "peer to peer trading in electricity networks an overview")
  Member "a game theoretic approach to energy trading in the smart grid":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "when energy trading meets blockchain in electrical power system the state of the art")

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.SY(Systems and Control)