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: "performance analysis of simultaneous wireless information and power transfer with ambient rf energy harvesting"
  Abstract: The advance in RF energy transfer and harvesting technique over the past decade has enabled wireless energy replenishment for electronic devices, which is deemed as a promising alternative to address the energy bottleneck of conventional battery-powered devices. In this paper, by using a stochastic geometry approach, we aim to analyze the performance of an RF-powered wireless sensor in a downlink simultaneous wireless information and power transfer (SWIPT) system with ambient RF transmitters. Specifically, we consider the point-to-point downlink SWIPT transmission from an access point to a wireless sensor in a network, where ambient RF transmitters are distributed as a Ginibre ?$\alpha$-determinantal point process (DPP), which becomes the Poisson point process when $\alpha$? approaches zero. In the considered network, we focus on analyzing the performance of a sensor equipped with the power-splitting architecture. Under this architecture, we characterize the expected RF energy harvesting rate of the sensor. Moreover, we derive the upper bound of both power and transmission outage probabilities. Numerical results show that our upper bounds are accurate for different value of ?$\alpha$.

Connected through hyperedge HE-1 (induced by source paper "on the effect of blockage objects in dense mimo swipt networks"):
  with members:
    - "mimo cellular networks with simultaneous wireless information and power transfer"
    - "rethinking the role of interference in wireless networks"
    - "simultaneous information and energy transfer in large scale networks with without relaying"
    - "analysis of blockage effects on urban cellular networks"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "wireless information transfer with opportunistic energy harvesting"
    - "wireless information and power transfer architecture design and rate energy tradeoff"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

Connected through hyperedge HE-2 (induced by source paper "wireless power transfer in massive mimo aided hetnets with user association"):
  with members:
    - "user association in massive mimo hetnets"
    - "user association in 5g networks a survey and an outlook"
    - "joint downlink cell association and bandwidth allocation for wireless backhauling in two tier hetnets with large scale antenna arrays"
    - "millimeter wave energy harvesting"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "5g cellular key enabling technologies and research challenges"
    - "millimeter wave power transfer and information transmission"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"

Connected through hyperedge HE-3 (induced by source paper "ambient rf energy harvesting in ultra dense small cell networks performance and trade offs"):
  with members:
    - "performance analysis of ambient rf energy harvesting with repulsive point process modeling"
    - "downlink cellular network analysis with multi slope path loss models"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "evolution toward 5g multi tier cellular wireless networks an interference management perspective"
    - "spatial throughput of mobile ad hoc networks powered by energy harvesting"
    - "opportunistic wireless energy harvesting in cognitive radio networks"
    - "fundamentals of heterogeneous cellular networks with energy harvesting"

Connected through hyperedge HE-4 (induced by source paper "performance analysis of ambient rf energy harvesting with repulsive point process modeling"):
  with members:
    - "resource allocation in wireless networks with rf energy harvesting and transfer"
    - "wireless charger networking for mobile devices fundamentals standards and applications"
    - "the ginibre point process as a model for wireless networks with repulsion"
    - "wireless networks with rf energy harvesting a contemporary survey"
    - "performance analysis of ambient rf energy harvesting a stochastic geometry approach"
    - "dynamic spectrum access in cognitive radio networks with rf energy harvesting"
    - "simultaneous information and energy transfer in large scale networks with without relaying"
    - "a layered coalitional game framework of wireless relay network"

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)