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 "privacy aware smart metering progress and challenges"):
  Abstract: The next-generation energy network, the so-called smart grid (SG), promises tremendous increases in efficiency, safety, and flexibility in managing the electricity grid as compared to the legacy energy network. This is needed today more than ever, as global energy consumption is growing at an unprecedented rate and renewable energy sources (RESs) must be seamlessly integrated into the grid to assure a sustainable human development.

Includes members:
  Member "optimal demand side management for joint privacy cost optimization with energy storage":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "joint privacy cost optimization in smart electricity metering systems")
  Member "smart meter privacy via the trapdoor channel":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "universal mutual information privacy guarantees for smart meters")
  Member "privacy protecting energy management unit through model distribution predictive control":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "privacy cost trade off in a smart meter system with a renewable energy source and a rechargeable battery")
  Member "information theoretic privacy for smart metering systems with a rechargeable battery":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "privacy aware time series data sharing with deep reinforcement learning")
  Member "privacy optimal strategies for smart metering systems with a rechargeable battery":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "smart meter privacy with renewable energy and a storage device")
  Member "smart meter privacy with an energy harvesting device and instantaneous power constraints":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "smart meter privacy with renewable energy and a storage device")
  Member "the uk dale dataset domestic appliance level electricity demand and whole house demand from five uk homes":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "deep learning based energy disaggregation and on off detection of household appliances")
  Member "smart meter privacy for multiple users in the presence of an alternative energy source":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "universal mutual information privacy guarantees for smart meters")

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.IT(Information Theory)