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: "stabilizing a linear system using phone calls"
  Abstract: We consider the problem of stabilizing an undisturbed, scalar, linear system over a "timing" channel, namely a channel where information is communicated through the timestamps of the transmitted symbols. Each transmitted symbol is received at the controller subject to some to random delay. The sensor can encode messages in the holding times between successive transmissions and the controller must decode them from the inter-reception times of successive symbols. This setup is analogous to a telephone system where a transmitter signals a phone call to the receiver through a "ring" and, after a random time required to establish the connection, is aware of the "ring" being received. We show that for the system to converge to zero in probability, the timing capacity of the channel should be at least as large as the entropy rate of the system. In the case the symbol delays are exponentially distributed, we show a tight sufficient condition using a random-coding strategy. Our results generalize previous event-triggering control approaches, revealing the limitation of using timing information for stabilization, independent of any transmission strategy.

Connected through hyperedge HE-1 (induced by source paper "theory and implementation of event triggered stabilization over digital channels"):
  with members:
    - "design of a networked controller for a two wheeled inverted pendulum robot"
    - "event triggering stabilization of real and complex linear systems with disturbances over digital channels"
    - "rate cost tradeoffs in control"
    - "on event triggered tracking for nonlinear systems"
    - "dynamic triggering mechanisms for event triggered control"

Connected through hyperedge HE-2 (induced by source paper "stabilizing a linear system using phone calls when time is information"):
  with members:
    - "optimal causal rate constrained sampling of the wiener process"
    - "theory and implementation of event triggered stabilization over digital channels"
    - "tracking and control of gauss markov processes over packet drop channels with acknowledgments"
    - "event triggered stabilization of linear systems under bounded bit rates"
    - "inscribed matter communication part ii"
    - "information theory of molecular communication directions and challenges"
    - "almost practical tree codes"
    - "bits through bufferless queues"

Connected through hyperedge HE-3 (induced by source paper "event triggering stabilization of real and complex linear systems with disturbances over digital channels"):
  with members:
    - "event triggered stabilization of linear systems under bounded bit rates"
    - "inscribed matter communication part ii"
    - "rate cost tradeoffs in control"
    - "when multiplicative noise stymies control"

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.SY(Systems and Control)