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: "constraining attacker capabilities through actuator saturation"
  Abstract: For LTI control systems, we provide mathematical tools - in terms of Linear Matrix Inequalities - for computing outer ellipsoidal bounds on the reachable sets that attacks can induce in the system when they are subject to the physical limits of the actuators. Next, for a given set of dangerous states, states that (if reached) compromise the integrity or safe operation of the system, we provide tools for designing new artificial limits on the actuators (smaller than their physical bounds) such that the new ellipsoidal bounds (and thus the new reachable sets) are as large as possible (in terms of volume) while guaranteeing that the dangerous states are not reachable. This guarantees that the new bounds cut as little as possible from the original reachable set to minimize the loss of system performance. Computer simulations using a platoon of vehicles are presented to illustrate the performance of our tools.

Connected through hyperedge HE-1 (induced by source paper "on privacy of quantized sensor measurements through additive noise"):
  with members:
    - "on reachable sets of hidden cps sensor attacks"
    - "a comparison of stealthy sensor attacks on control systems"
    - "managing your private and public data bringing down inference attacks against your privacy"
    - "increasing smart meter privacy through energy harvesting and storage devices"
    - "the optimal mechanism in differential privacy"
    - "privacy against statistical inference"

Connected through hyperedge HE-2 (induced by source paper "a multi observer approach for attack detection and isolation of discrete time nonlinear systems"):
  with members:
    - "on privacy of quantized sensor measurements through additive noise"
    - "security metrics of networked control systems under sensor attacks extended preprint"
    - "on reachable sets of hidden cps sensor attacks"
    - "a comparison of stealthy sensor attacks on control systems"

Connected through hyperedge HE-3 (induced by source paper "an unknown input multi observer approach for estimation attack isolation and control of lti systems under actuator attacks"):
  with members:
    - "on privacy of quantized sensor measurements through additive noise"
    - "on reachable sets of hidden cps sensor attacks"
    - "a comparison of stealthy sensor attacks on control systems"

Connected through hyperedge HE-4 (induced by source paper "security metrics of networked control systems under sensor attacks extended preprint"):
  with members:
    - "estimating the impact of cyber attack strategies for stochastic control systems"
    - "on reachable sets of hidden cps sensor attacks"
    - "a comparison of stealthy sensor attacks on control systems"

Connected through hyperedge HE-5 (induced by source paper "on reachable sets of hidden cps sensor attacks"):
  with members:
    - "a comparison of stealthy sensor attacks on control systems"
    - "design time quantification of integrity in cyber physical systems"

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)