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: "a general utility optimization framework for energy harvesting based wireless communications"
  Abstract: In the near future, wireless communication systems are expected to achieve more cost-efficient and sustainable operations by replacing conventional fixed power supplies such as batteries with energy harvesting devices, which could provide electric energy from renewable energy sources (e.g., solar and wind). Such EH power supplies, however, are random and unstable in nature, and as a result impose new challenges on reliable communication design and have triggered substantial research interest in EH-based wireless communications. Building on existing works, in this article, we develop a general optimization framework to maximize the utility of EH wireless communication systems. Our framework encapsulates a variety of design problems, such as throughput maximization and outage probability minimization in single-user and multiuser setups, and provides useful guidelines to the practical design of general EH-based communication systems with different assumptions regarding the knowledge of time-varying wireless channels and EH rates at the transmitters.

Connected through hyperedge HE-1 (induced by source paper "cross layer scheduling and beamforming in smart grid powered cellular networks with heterogeneous energy coordination"):
  with members:
    - "deep reinforcement learning for adaptive caching in hierarchical content delivery networks"
    - "optimal 3d trajectory design and resource allocation for solar powered uav communication systems"
    - "robust energy efficient beamforming in misome swipt systems with proportional secrecy rate"
    - "dynamic cross layer beamforming in hybrid powered communication systems with harvest use trade strategy"
    - "a hybrid energy sharing framework for green cellular networks"
    - "an overview of sustainable green 5g networks"
    - "ergodic energy management leveraging resource variability in distribution grids"
    - "comp meets smart grid a new communication and energy cooperation paradigm"

Connected through hyperedge HE-2 (induced by source paper "optimal resource allocation for wireless powered mobile edge computing with dynamic task arrivals"):
  with members:
    - "fundamentals of wireless information and power transfer from rf energy harvester models to signal and system designs"
    - "joint computation and communication cooperation for energy efficient mobile edge computing"
    - "online learning for offloading and autoscaling in energy harvesting mobile edge computing"
    - "a survey on mobile edge computing the communication perspective"
    - "stochastic joint radio and computational resource management for multi user mobile edge computing systems"
    - "joint offloading and computing optimization in wireless powered mobile edge computing systems"
    - "dynamic computation offloading for mobile edge computing with energy harvesting devices"
    - "communications and signals design for wireless power transmission"

Connected through hyperedge HE-3 (induced by source paper "cross layer scheduling and beamforming in smart grid powered small cell networks"):
  with members:
    - "robust energy efficient beamforming in misome swipt systems with proportional secrecy rate"
    - "dynamic cross layer beamforming in hybrid powered communication systems with harvest use trade strategy"
    - "a hybrid energy sharing framework for green cellular networks"
    - "an overview of sustainable green 5g networks"
    - "power delay tradeoff with predictive scheduling in integrated cellular and wi fi networks"
    - "transmit power minimization in small cell networks under time average qos constraints"

Connected through hyperedge HE-4 (induced by source paper "throughput maximization for uav enabled wireless powered communication networks"):
  with members:
    - "capacity characterization of uav enabled two user broadcast channel"
    - "placement optimization of uav mounted mobile base stations"
    - "uav enabled wireless power transfer trajectory design and energy region characterization"
    - "joint trajectory and communication design for multi uav enabled wireless networks"
    - "energy efficient data collection in uav enabled wireless sensor network"
    - "joint trajectory and communication design for uav enabled multiple access"
    - "capacity of uav enabled multicast channel joint trajectory design and power allocation"
    - "uav enabled wireless power transfer trajectory design and energy optimization"

Connected through hyperedge HE-5 (induced by source paper "joint offloading and computing optimization in wireless powered mobile edge computing systems"):
  with members:
    - "distributed wireless power transfer with energy feedback"
    - "reel bf design achieving the sdp bound for downlink beamforming with arbitrary shaping constraints"
    - "delay optimal computation task scheduling for mobile edge computing systems"
    - "waveform design for wireless power transfer"
    - "energy efficient resource allocation for mobile edge computation offloading"
    - "a general design framework for mimo wireless energy transfer with limited feedback"
    - "communications and signals design for wireless power transmission"
    - "wireless powered communication opportunities and challenges"

Connected through hyperedge HE-6 (induced by source paper "finite horizon energy efficient scheduling with energy harvesting transmitters over fading channels"):
  with members:
    - "channel sensing and communication over a time correlated channel with an energy harvesting transmitter"
    - "universally near optimal online power control for energy harvesting nodes"
    - "finite horizon online lazy scheduling with energy harvesting transmitters over fading channels"
    - "a learning theoretic approach to energy harvesting communication system optimization"
    - "throughput maximization for an energy harvesting communication system with processing cost"
    - "optimal energy allocation for wireless communications with energy harvesting constraints"
    - "optimal offline broadcast scheduling with an energy harvesting transmitter"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"

Connected through hyperedge HE-7 (induced by source paper "reconstruction of correlated sources with energy harvesting constraints in delay constrained and delay tolerant communication scenarios"):
  with members:
    - "energy harvesting wireless communications a review of recent advances"
    - "dynamic compression transmission for energy harvesting multihop networks with correlated sources"
    - "optimal power allocation for energy harvesting and power grid coexisting wireless communication systems"
    - "energy neutral source channel coding with battery and memory size constraints"
    - "throughput optimal policies for energy harvesting wireless transmitters with non ideal circuit power"
    - "energy management policies for energy neutral source channel coding"
    - "a general framework for the optimization of energy harvesting communication systems with battery imperfections"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"

Connected through hyperedge HE-8 (induced by source paper "dynamic cross layer beamforming in hybrid powered communication systems with harvest use trade strategy"):
  with members:
    - "energy harvesting wireless communications a review of recent advances"
    - "comp meets smart grid a new communication and energy cooperation paradigm"
    - "a lyapunov optimization approach for green cellular networks with hybrid energy supplies"
    - "cost minimization for fading channels with energy harvesting and conventional energy"
    - "cost aware green cellular networks with energy and communication cooperation"
    - "cooperative energy trading in comp systems powered by smart grids"
    - "energy efficient resource allocation in ofdma systems with hybrid energy harvesting base station"
    - "green cellular networks a survey some research issues and challenges"

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)