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: "increasing smart meter privacy through energy harvesting and storage devices"
  Abstract: Smart meters are key elements for the operation of smart grids. By providing near realtime information on the energy consumption of individual users, smart meters increase the efficiency in generation, distribution and storage of energy in a smart grid. The ability of the utility provider to track users' energy consumption inevitably leads to important threats to privacy. In this paper, privacy in a smart metering system is studied from an information theoretic perspective in the presence of energy harvesting and storage units. It is shown that energy harvesting provides increased privacy by diversifying the energy source, while a storage device can be used to increase both the energy efficiency and the privacy of the user. For given input load and energy harvesting rates, it is shown that there exists a trade-off between the information leakage rate, which is used to measure the privacy of the user, and the wasted energy rate, which is a measure of the energy-efficiency. The impact of the energy harvesting rate and the size of the storage device on this trade-off is also studied.

Connected through hyperedge HE-1 (induced by source paper "information theoretic privacy through chaos synchronization and optimal additive noise"):
  with members:
    - "on privacy of quantized sensor measurements through additive noise"
    - "managing your private and public data bringing down inference attacks against your privacy"
    - "privacy constrained information processing"
    - "the optimal mechanism in differential privacy"
    - "privacy against statistical inference"
    - "smart meter privacy a utility privacy framework"

Connected through hyperedge HE-2 (induced by source paper "safe and private forward trading platform for transactive microgrids"):
  with members:
    - "transax a blockchain based decentralized forward trading energy exchange for transactive microgrids"
    - "decentralized p2p energy trading under network constraints in a low voltage network"
    - "solidworx a resilient and trustworthy transactive platform for smart and connected communities"
    - "providing privacy safety and security in iot based transactive energy systems using distributed ledgers"
    - "hijacking bitcoin routing attacks on cryptocurrencies"
    - "bitcoin over tor isn t a good idea"

Connected through 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"):
  with members:
    - "privacy aware smart metering progress and challenges"
    - "smart meter privacy via the trapdoor channel"
    - "privacy protecting energy management unit through model distribution predictive control"
    - "smart meter privacy with renewable energy and a finite capacity battery"
    - "information theoretic privacy for smart metering systems with a rechargeable battery"
    - "smart meter privacy for multiple users in the presence of an alternative energy source"

Connected through hyperedge HE-4 (induced by source paper "user centric multiobjective approach to privacy preservation and energy cost minimization in smart home"):
  with members:
    - "a multiobjective approach to multimicrogrid system design"
    - "multiobjective controller design by solving a multiobjective matrix inequality problem"
    - "smart meter privacy for multiple users in the presence of an alternative energy source"

Connected through hyperedge HE-5 (induced by source paper "transax a blockchain based decentralized forward trading energy exchange for transactive microgrids"):
  with members:
    - "solidworx a resilient and trustworthy transactive platform for smart and connected communities"
    - "providing privacy safety and security in iot based transactive energy systems using distributed ledgers"

Connected through hyperedge HE-6 (induced by source paper "easy mobile meter reading for non smart meters comparison of aws rekognition and google cloud vision approaches"):
  with members:
    - "tensorflow a system for large scale machine learning"

Connected through hyperedge HE-7 (induced by source paper "privacy aware cost effective scheduling considering non schedulable appliances in smart home"):
  with members:
    - "quantization of fully convolutional networks for accurate biomedical image segmentation"

Connected through hyperedge HE-8 (induced by source paper "on the robustness of information theoretic privacy measures and mechanisms"):
  with members:
    - "data disclosure under perfect sample privacy"
    - "privacy against brute force inference attacks"
    - "estimation efficiency under privacy constraints"
    - "data privacy for a rho recoverable function"
    - "an operational approach to information leakage"
    - "the utility cost of robust privacy guarantees"
    - "privacy under hard distortion constraints"
    - "a tunable measure for information leakage"

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)