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: "decentralized delay optimal control for interference networks with limited renewable energy storage"
  Abstract: In this paper, we consider delay minimization for interference networks with renewable energy source, where the transmission power of a node comes from both the conventional utility power (ac power) and the renewable energy source. We assume the transmission power of each node is a function of the local channel state, local data queue state and local energy queue state only. We consider two delay optimization formulations, namely the decentralized partially observable Markov decision process (DEC-POMDP) and noncooperative partially observable stochastic game (POSG). In DEC-POMDP formulation, we derive a decentralized online learning algorithm to determine the control actions and Lagrangian multipliers (LMs) simultaneously, based on the policy gradient approach. Under some mild technical conditions, the proposed decentralized policy gradient algorithm converges almost surely to a local optimal solution. In the noncooperative POSG formulation, the transmitter nodes are noncooperative. We extend the decentralized policy gradient solution and establish the technical proof for almost-sure convergence of the learning algorithms. In both cases, the solutions are very robust to model variations.

Connected through hyperedge HE-1 (induced by source paper "energy efficient resource allocation for time varying ofdma relay systems with hybrid energy supplies"):
  with members:
    - "cross layer scheduling for ofdma based cognitive radio systems with delay and security constraints"
    - "power allocation for conventional and buffer aided link adaptive relaying systems with energy harvesting nodes"
    - "energy efficient resource allocation in ofdma systems with hybrid energy harvesting base station"
    - "maximizing energy efficiency in multi relay ofdma cellular networks"
    - "jointly optimal channel and power assignment for dual hop multi channel multi user relaying"
    - "a cross layer perspective on energy harvesting aided green communications over fading channels"
    - "adaptive power management for wireless base stations in a smart grid environment"
    - "wsr maximized resource allocation in multiple df relays aided ofdma downlink transmission"

Connected through hyperedge HE-2 (induced by source paper "optimal time scheduling for wireless powered backscatter communication networks"):
  with members:
    - "backscatter communications for wireless powered sensor networks with collision resolution"
    - "ambient backscatter communications a contemporary survey"
    - "backscatter communications for the internet of things a stochastic geometry approach"
    - "wireless powered communication opportunities and challenges"
    - "throughput maximization in wireless powered communication networks"

Connected through hyperedge HE-3 (induced by source paper "joint energy bandwidth allocation for multi user channels with cooperating hybrid energy nodes"):
  with members:
    - "iterative dynamic water filling for fading multiple access channels with energy harvesting"
    - "comp meets smart grid a new communication and energy cooperation paradigm"
    - "joint energy and spectrum cooperation for cellular communication systems"
    - "energy cooperation in energy harvesting communications"
    - "throughput maximization for the gaussian relay channel with energy harvesting constraints"
    - "energy cooperation in cellular networks with renewable powered base stations"
    - "optimal power allocation for energy harvesting and power grid coexisting wireless communication systems"
    - "relaying protocols for wireless energy harvesting and information processing"

Connected through hyperedge HE-4 (induced by source paper "the tradeoff analysis in rf powered backscatter cognitive radio networks"):
  with members:
    - "optimal time sharing in underlay cognitive radio systems with rf energy harvesting"
    - "throughput maximization in wireless powered communication networks"

Connected through hyperedge HE-5 (induced by source paper "energy management and cross layer optimization for wireless sensor network powered by heterogeneous energy sources"):
  with members:
    - "dynamic compression transmission for energy harvesting multihop networks with correlated sources"
    - "throughput maximization in wireless powered communication networks"
    - "optimal power allocation for energy harvesting and power grid coexisting wireless communication systems"
    - "energy efficient sensing and communication of parallel gaussian sources"
    - "energy management policies for energy neutral source channel coding"
    - "optimal power cost management using stored energy in data centers"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"
    - "optimum transmission policies for battery limited energy harvesting nodes"

Connected through hyperedge HE-6 (induced by source paper "closed form delay optimal power control for energy harvesting wireless system with finite energy storage"):
  with members:
    - "a learning theoretic approach to energy harvesting communication system optimization"
    - "wireless compressive sensing for energy harvesting sensor nodes"
    - "a survey on delay aware resource control for wireless systems large deviation theory stochastic lyapunov drift and distributed stochastic learning"
    - "broadcasting with an energy harvesting rechargeable transmitter"
    - "sum rate optimal power policies for energy harvesting transmitters in an interference channel"
    - "optimal energy allocation for wireless communications with energy harvesting constraints"
    - "optimum transmission policies for battery limited energy harvesting nodes"
    - "basic performance limits and tradeoffs in energy harvesting sensor nodes with finite data and energy storage"

Connected through hyperedge HE-7 (induced by source paper "spatial throughput of mobile ad hoc networks powered by energy harvesting"):
  with members:
    - "on the stability of random multiple access with stochastic energy harvesting"
    - "medium access control protocols for wireless sensor networks with energy harvesting"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "broadcasting with an energy harvesting rechargeable transmitter"
    - "multi antenna communication in ad hoc networks achieving mimo gains with simo transmission"
    - "open loop spatial multiplexing and diversity communications in ad hoc networks"
    - "optimal energy allocation for wireless communications with energy harvesting constraints"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"

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)