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: "interactive joint transfer of energy and information"
  Abstract: In some communication networks, such as passive RFID systems, the energy used to transfer information between a sender and a recipient can be reused for successive communication tasks. In fact, from known results in physics, any system that exchanges information via the transfer of given physical resources, such as radio waves, particles and qubits, can conceivably reuse, at least part, of the received resources. This paper aims at illustrating some of the new challenges that arise in the design of communication networks in which the signals exchanged by the nodes carry both information and energy. To this end, a baseline two-way communication system is considered in which two nodes communicate in an interactive fashion. In the system, a node can either send an "onquotedblright symbol (or "1quotedblright), which costs one unit of energy, or an "offquotedblright signal (or "0quotedblright), which does not require any energy expenditure. Upon reception of a "1quotedblright signal, the recipient node "harvestsquotedblright, with some probability, the energy contained in the signal and stores it for future communication tasks. Inner and outer bounds on the achievable rates are derived. Numerical results demonstrate the effectiveness of the proposed strategies and illustrate some key design insights.

Connected through hyperedge HE-1 (induced by source paper "wirelessly powered data aggregation for iot via over the air functional computation beamforming and power control"):
  with members:
    - "inference from randomized transmissions by many backscatter sensors"
    - "over the air function computation in sensor networks"
    - "communications and signals design for wireless power transmission"
    - "resource allocation in wireless powered relay networks a bargaining game approach"
    - "wireless powered communication opportunities and challenges"
    - "throughput optimization for massive mimo systems powered by wireless energy transfer"
    - "energy harvesting for physical layer security in ofdma networks"
    - "simultaneous wireless information and power transfer under different csi acquisition schemes"

Connected through hyperedge HE-2 (induced by source paper "optimal and near optimal policies for wireless power transfer in energy limited and power limited scenarios"):
  with members:
    - "battery powered devices in wpcns"
    - "wireless power transfer survey and roadmap"
    - "distributed energy beamforming with one bit feedback"
    - "recent advances in joint wireless energy and information transfer"
    - "user cooperation in wireless powered communication networks"
    - "optimal resource allocation in full duplex wireless powered communication network"
    - "energy beamforming with one bit feedback"
    - "optimized training design for wireless energy transfer"

Connected through hyperedge HE-3 (induced by source paper "wirelessly powered crowd sensing joint power transfer sensing compression and transmission"):
  with members:
    - "privacy management and optimal pricing in people centric sensing"
    - "wirelessly powered urban crowd sensing over wearables trading energy for data"
    - "wirelessly powered backscatter communication networks modeling coverage and capacity"
    - "communications and signals design for wireless power transmission"
    - "ambient rf energy harvesting in ultra dense small cell networks performance and trade offs"
    - "resource allocation in wireless powered relay networks a bargaining game approach"
    - "simultaneous wireless information and power transfer under different csi acquisition schemes"
    - "energy efficient mobile cloud computing powered by wireless energy transfer"

Connected through hyperedge HE-4 (induced by source paper "joint optimization of power splitting and allocation for swipt in interference alignment networks"):
  with members:
    - "simultaneous information and power transfer for broadband wireless systems"
    - "wireless information and power transfer a dynamic power splitting approach"
    - "guiding blind transmitters degrees of freedom optimal interference alignment using relays"
    - "adaptive interference alignment with csi uncertainty"
    - "enabling wireless power transfer in cellular networks architecture modeling and deployment"
    - "robust beamforming for wireless information and power transmission"
    - "transmission with energy harvesting nodes in fading wireless channels optimal policies"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

Connected through hyperedge HE-5 (induced by source paper "generalised precoded spatial modulation for integrated wireless information and power transfer"):
  with members:
    - "localisation communication and networking with vlc challenges and opportunities"
    - "adaptive coding and modulation for large scale antenna array based aeronautical communications in the presence of co channel interference"
    - "synthesis and optimization of reversible circuits a survey"
    - "wireless information and power transfer a dynamic power splitting approach"
    - "wireless information transfer with opportunistic energy harvesting"
    - "large system analysis of linear precoding in correlated miso broadcast channels under limited feedback"
    - "on the transfer of information and energy in multi user systems"
    - "robust beamforming for wireless information and power transmission"

Connected through hyperedge HE-6 (induced by source paper "optimizing wirelessly powered crowd sensing trading energy for data"):
  with members:
    - "wireless charging technologies fundamentals standards and network applications"
    - "wirelessly powered urban crowd sensing over wearables trading energy for data"
    - "ambient rf energy harvesting in ultra dense small cell networks performance and trade offs"
    - "resource allocation in wireless powered relay networks a bargaining game approach"
    - "energy efficient mobile cloud computing powered by wireless energy transfer"
    - "opportunistic wireless energy harvesting in cognitive radio networks"
    - "mimo broadcasting for simultaneous wireless information and power transfer"

Connected through hyperedge HE-7 (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"
    - "binary energy harvesting channel with finite energy storage"
    - "on the transfer of information and energy in multi user systems"
    - "information theoretic analysis of an energy harvesting communication system"

Connected through hyperedge HE-8 (induced by source paper "robust transceiver design for miso interference channel with energy harvesting"):
  with members:
    - "distributed power splitting for swipt in relay interference channels using game theory"
    - "secure beamforming for mimo broadcasting with wireless information and power transfer"
    - "multiuser miso beamforming for simultaneous wireless information and power transfer"
    - "joint transmit beamforming and receive power splitting for miso swipt systems"
    - "beamforming for miso interference channels with qos and rf energy transfer"
    - "wireless information and power transfer a dynamic power splitting approach"
    - "two way communication with energy exchange"
    - "distributed robust multicell coordinated beamforming with imperfect csi an admm approach"

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)