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: "effect of energy harvesting on stable throughput in cooperative relay systems"
  Abstract: In this paper, the impact of energy constraints on a two-hop network with a source, a relay and a destination under random medium access is studied. A collision channel with erasures is considered, and the source and the relay nodes have energy harvesting capabilities and an unlimited battery to store the harvested energy. Additionally, the source and the relay node have external traffic arrivals and the relay forwards a fraction of the source node's traffic to the destination; the cooperation is performed at the network level. An inner and an outer bound of the stability region for a given transmission probability vector are obtained. Then, the closure of the inner and the outer bound is obtained separately and they turn out to be identical. This work is not only a step in connecting information theory and networking, by studying the maximum stable throughput region metric but also it taps the relatively unexplored and important domain of energy harvesting and assesses the effect of that on this important measure.

Connected through hyperedge HE-1 (induced by source paper "a random access g network stability stable throughput and queueing analysis"):
  with members:
    - "performance analysis of a cooperative wireless network with adaptive relays"
    - "stable throughput region of the two user interference channel"
    - "network level cooperation in random access iot networks with aggregators"
    - "optimal energy distribution with energy packet networks"
    - "stable throughput and delay analysis of a random access network with queue aware transmission"
    - "towards a cognitive routing engine for software defined networks"
    - "relay assisted multiple access with full duplex multi packet reception"
    - "adaptive dispatching of tasks in the cloud"

Connected through hyperedge HE-2 (induced by source paper "on the benefits of network level cooperation in iot networks with aggregators"):
  with members:
    - "iot u cellular internet of things networks over unlicensed spectrum"
    - "performance analysis of a cooperative wireless network with adaptive relays"
    - "network level cooperation in random access iot networks with aggregators"
    - "performance analysis of uplink cellular iot using different deployments of data aggregators"
    - "on the benefits of network level cooperation in millimeter wave communications"
    - "aggregation and resource scheduling in machine type communication networks a stochastic geometry approach"
    - "wireless network level partial relay cooperation a stable throughput analysis"
    - "massive machine type communication with data aggregation and resource scheduling"

Connected through hyperedge HE-3 (induced by source paper "network level cooperation in random access iot networks with aggregators"):
  with members:
    - "stable throughput and delay analysis of a random access network with queue aware transmission"
    - "aggregation and resource scheduling in machine type communication networks a stochastic geometry approach"
    - "wireless network level partial relay cooperation a stable throughput analysis"
    - "allocation of heterogeneous resources of an iot device to flexible services"
    - "massive machine type communication with data aggregation and resource scheduling"
    - "optimizing data aggregation for uplink machine to machine communication networks"
    - "network level performance evaluation of a two relay cooperative random access wireless system"
    - "network level cooperation in energy harvesting wireless networks"

Connected through hyperedge HE-4 (induced by source paper "stable throughput region of the two user interference channel"):
  with members:
    - "stable throughput and delay analysis of a random access network with queue aware transmission"
    - "stable throughput region of the two user broadcast channel"
    - "multi user cognitive interference channels a survey and new capacity results"
    - "achievable outage rate regions for the miso interference channel"
    - "the stability region of the two user interference channel"
    - "relay assisted multiple access with multi packet reception capability and simultaneous transmission and reception"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"

Connected through hyperedge HE-5 (induced by source paper "wireless network level partial relay cooperation a stable throughput analysis"):
  with members:
    - "relay selection in cooperative power line communication a multi armed bandit approach"
    - "wireless energy harvesting in a cognitive relay network"
    - "energy aware wireless relay selection in load coupled ofdma cellular networks"
    - "probabilistic cooperation of a full duplex relay in random access networks"
    - "on the stability of random multiple access with stochastic energy harvesting"
    - "relay assisted multiple access with full duplex multi packet reception"
    - "5g cellular key enabling technologies and research challenges"
    - "a buffer aided successive opportunistic relay selection scheme with power adaptation and inter relay interference cancellation for cooperative diversity systems"

Connected through hyperedge HE-6 (induced by source paper "stable throughput of cooperative cognitive networks with energy harvesting finite relay buffer and finite battery capacity"):
  with members:
    - "optimization of energy constrained wireless powered communication networks with heterogeneous nodes"
    - "non orthogonal multiple access schemes in wireless powered communication networks"
    - "on stable throughput of cognitive radio networks with cooperating secondary users"
    - "on optimal policies in full duplex wireless powered communication networks"
    - "energy harvesting wireless communications a review of recent advances"
    - "energy efficient resource allocation for wireless powered communication networks"
    - "cooperative access in cognitive radio networks stable throughput and delay tradeoffs"
    - "on the stable throughput of cooperative cognitive radio networks with finite relaying buffer"

Connected through hyperedge HE-7 (induced by source paper "stability analysis of tdd networks revisited a trade off between complexity and precision"):
  with members:
    - "the stability region of the two user interference channel"
    - "optimal utilization of a cognitive shared channel with a rechargeable primary source node"
    - "asymptotic stability region of slotted aloha"

Connected through hyperedge HE-8 (induced by source paper "relay assisted multiple access with full duplex multi packet reception"):
  with members:
    - "stability and performance issues of a relay assisted multiple access scheme with mpr capabilities"
    - "on the stability region of a relay assisted multiple access scheme"
    - "half duplex or full duplex relaying a capacity analysis under self interference"
    - "network level cooperation in energy harvesting wireless networks"
    - "relay assisted multiple access with multi packet reception capability and simultaneous transmission and reception"
    - "cellular systems with full duplex compress and forward relaying and cooperative base stations"

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)