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: "information theoretic analysis of an energy harvesting communication system"
  Abstract: In energy harvesting communication systems, an exogenous recharge process supplies energy for the data transmission and arriving energy can be buffered in a battery before consumption. Transmission is interrupted if there is not sufficient energy. We address communication with such random energy arrivals in an information-theoretic setting. Based on the classical additive white Gaussian noise (AWGN) channel model, we study the coding problem with random energy arrivals at the transmitter. We show that the capacity of the AWGN channel with stochastic energy arrivals is equal to the capacity with an average power constraint equal to the average recharge rate. We provide two different capacity achieving schemes: save-and-transmit and best-effort-transmit. Next, we consider the case where energy arrivals have time-varying average in a larger time scale. We derive the optimal offline power allocation for maximum average throughput and provide an algorithm that finds the optimal power allocation.

Connected through hyperedge HE-1 (induced by source paper "diffusion based molecular communication with limited molecule production rate"):
  with members:
    - "symbol synchronization for diffusive molecular communication systems"
    - "a comprehensive survey of recent advancements in molecular communication"
    - "information capacity of energy harvesting sensor nodes"
    - "optimum transmission policies for battery limited energy harvesting nodes"

Connected through hyperedge HE-2 (induced by source paper "capacity of a full duplex wirelessly powered communication system with self interference and processing cost"):
  with members:
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "capacity region of gaussian multiple access channels with energy harvesting and energy cooperation"
    - "capacity analysis of discrete energy harvesting channels"
    - "capacity of the energy harvesting gaussian mac"
    - "capacity of the two hop relay channel with wireless energy transfer from relay to source and energy transmission cost"
    - "weighted sum transmit power minimization for full duplex system with swipt and self energy recycling"
    - "capacity of the energy harvesting channel with a finite battery"
    - "energy recycling full duplex radios for next generation networks"

Connected through hyperedge HE-3 (induced by source paper "joint transfer of energy and information in a two hop relay channel"):
  with members:
    - "a survey of energy efficient techniques for 5g networks and challenges ahead"
    - "constrained codes for joint energy and information transfer"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "interactive joint transfer of energy and information"
    - "binary energy harvesting channel with finite energy storage"
    - "on the transfer of information and energy in multi user systems"

Connected through hyperedge HE-4 (induced by source paper "achievable secrecy rates of an energy harvesting device"):
  with members:
    - "energy harvesting wireless communications a review of recent advances"
    - "joint transmission and energy transfer policies for energy harvesting devices with finite batteries"
    - "energy harvesting for secure ofdma systems"
    - "robust beamforming for secure communication in systems with wireless information and power transfer"
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "awgn channel under time varying amplitude constraints with causal information at the transmitter"
    - "optimum transmission policies for battery limited energy harvesting nodes"
    - "optimal energy management policies for energy harvesting sensor nodes"

Connected through hyperedge HE-5 (induced by source paper "sensing throughput optimization in fading cognitive multiple access channels with energy harvesting secondary transmitters"):
  with members:
    - "optimum transmission policies for battery limited energy harvesting nodes"
    - "on ergodic sum capacity of fading cognitive multiple access and broadcast channels"

Connected through hyperedge HE-6 (induced by source paper "energy harvesting communication system with soc dependent energy storage losses"):
  with members:
    - "a general framework for the optimization of energy harvesting communication systems with battery imperfections"
    - "optimal energy management policies for energy harvesting sensor nodes"

Connected through hyperedge HE-7 (induced by source paper "energy harvesting systems with continuous energy and data arrivals the optimal offline and a heuristic online algorithms"):
  with members:
    - "optimal offline and competitive online strategies for transmitter receiver energy harvesting"
    - "power allocation for energy harvesting transmitter with causal information"
    - "optimal power and rate allocation in the degraded gaussian relay channel with energy harvesting nodes"
    - "energy cooperation in energy harvesting communications"
    - "throughput maximization for the gaussian relay channel with energy harvesting constraints"
    - "optimal scheduling and power allocation for two hop energy harvesting communication systems"
    - "throughput optimal policies for energy harvesting wireless transmitters with non ideal circuit power"
    - "optimal transmission policies for energy harvesting two hop networks"

Connected through hyperedge HE-8 (induced by source paper "an optimal transmission policy for energy harvesting systems with continuous energy and data arrivals"):
  with members:
    - "optimal offline and competitive online strategies for transmitter receiver energy harvesting"
    - "optimal power and rate allocation in the degraded gaussian relay channel with energy harvesting nodes"
    - "energy cooperation in energy harvesting communications"
    - "throughput maximization for the gaussian relay channel with energy harvesting constraints"
    - "optimal scheduling and power allocation for two hop energy harvesting communication systems"
    - "optimal transmission policies for energy harvesting two hop networks"
    - "broadcasting with an energy harvesting rechargeable transmitter"
    - "two hop communication with energy harvesting"

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)