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: "secure distributed state estimation of an lti system over time varying networks and analog erasure channels"
  Abstract: We study the problem of collaboratively estimating the state of an LTI system monitored by a network of sensors, subject to the following important practical considerations: (i) certain sensors might be arbitrarily compromised by an adversary and (ii) the underlying communication graph governing the flow of information across sensors might be time-varying. We first analyze a scenario involving intermittent communication losses that preserve certain information flow patterns over bounded intervals of time. By equipping the sensors with adequate memory, we show that one can obtain a fully distributed, provably correct state estimation algorithm that accounts for arbitrary adversarial behavior, provided certain conditions are met by the network topology. We then argue that our approach can handle bounded communication delays as well. Next, we explore a case where each communication link stochastically drops packets based on an analog erasure channel model. For this setup, we propose state estimate update and information exchange rules, along with conditions on the network topology and packet drop probabilities, that guarantee mean-square stability despite arbitrary adversarial attacks.

Connected through hyperedge HE-1 (induced by source paper "determining r and r s robustness of digraphs using mixed integer linear programming"):
  with members:
    - "determining r robustness of arbitrary digraphs using zero one linear integer programming"
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "on connectivity and robustness in random intersection graphs"
    - "resilient randomized quantized consensus"
    - "r robustness and r s robustness of circulant graphs"
    - "distributed optimization under adversarial nodes"
    - "robustness and algebraic connectivity of random interdependent networks"
    - "asynchronous convex consensus in the presence of crash faults"

Connected through hyperedge HE-2 (induced by source paper "a filtering approach for resiliency of distributed observers against smart spoofers"):
  with members:
    - "byzantine resilient distributed observers for lti systems"
    - "on the limited communication analysis and design for decentralized estimation"
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "resilient randomized quantized consensus"

Connected through hyperedge HE-3 (induced by source paper "secure distributed filtering for unstable dynamics under compromised observations"):
  with members:
    - "secure state estimation with byzantine sensors a probabilistic approach"
    - "detection and mitigation of biasing attacks on distributed estimation networks"
    - "convex optimization based state estimation against sparse integrity attacks"
    - "convergence rate analysis of distributed gossip linear parameter estimation fundamental limits and tradeoffs"

Connected through hyperedge HE-4 (induced by source paper "determining r robustness of arbitrary digraphs using zero one linear integer programming"):
  with members:
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "on connectivity and robustness in random intersection graphs"
    - "distributed optimization under adversarial nodes"
    - "robustness and algebraic connectivity of random interdependent networks"
    - "reaching approximate byzantine consensus with multi hop communication"
    - "byzantine vector consensus in complete graphs"
    - "resilient continuous time consensus in fractional robust networks"
    - "iterative approximate byzantine consensus under a generalized fault model"

Connected through hyperedge HE-5 (induced by source paper "byzantine resilient distributed observers for lti systems"):
  with members:
    - "a distributed observer for a time invariant linear system"
    - "detection and mitigation of biasing attacks on distributed estimation networks"
    - "detection of biasing attacks on distributed estimation networks"
    - "distributed observers for lti systems"
    - "iterative approximate byzantine consensus in arbitrary directed graphs"
    - "distributing the kalman filter for large scale systems"

Connected through hyperedge HE-6 (induced by source paper "finite time resilient formation control with bounded inputs"):
  with members:
    - "resilient leader follower consensus to arbitrary reference values"
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "resilient continuous time consensus in fractional robust networks"
    - "consensus of multi agent networks in the presence of adversaries using only local information"

Connected through hyperedge HE-7 (induced by source paper "resilient leader follower consensus to arbitrary reference values"):
  with members:
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "r robustness and r s robustness of circulant graphs"
    - "resilient continuous time consensus in fractional robust networks"
    - "robustness of information diffusion algorithms to locally bounded adversaries"

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)