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: "iterative approximate byzantine consensus in arbitrary directed graphs"
  Abstract: In this paper, we explore the problem of iterative approximate Byzantine consensus in arbitrary directed graphs. In particular, we prove a necessary and sufficient condition for the existence of iterative byzantine consensus algorithms. Additionally, we use our sufficient condition to examine whether such algorithms exist for some specific graphs.

Connected through hyperedge HE-1 (induced by source paper "grand challenges of resilience autonomous system resilience through design and runtime measures"):
  with members:
    - "spherical text embedding"
    - "straggler mitigation with tiered gradient codes"
    - "certified adversarial robustness via randomized smoothing"
    - "lower bounds on adversarial robustness from optimal transport"
    - "a reinforcement learning based approach for joint multi agent decision making"
    - "vstore a data store for analytics on large videos"
    - "optimal server selection for straggler mitigation"
    - "formal security analysis of neural networks using symbolic intervals"

Connected through hyperedge HE-2 (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"
    - "secure distributed state estimation of an lti system over time varying networks and analog erasure channels"
    - "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"

Connected through hyperedge HE-3 (induced by source paper "exact byzantine consensus on undirected graphs under local broadcast model"):
  with members:
    - "byzantine consensus under local broadcast model tight sufficient condition"
    - "exact byzantine consensus under local broadcast model"
    - "iterative byzantine vector consensus in incomplete graphs"
    - "exact byzantine consensus in directed graphs"
    - "broadcast using certified propagation algorithm in presence of byzantine faults"
    - "iterative approximate byzantine consensus under a generalized fault model"
    - "robustness of information diffusion algorithms to locally bounded adversaries"

Connected through hyperedge HE-4 (induced by source paper "a new approach for distributed hypothesis testing with extensions to byzantine resilience"):
  with members:
    - "byzantine resilient distributed observers for lti systems"
    - "distributed observers for lti systems"
    - "defending non bayesian learning against adversarial attacks"
    - "distributed optimization under adversarial nodes"
    - "exponentially fast parameter estimation in networks using distributed dual averaging"
    - "matrix representation of iterative approximate byzantine consensus in directed graphs"

Connected through hyperedge HE-5 (induced by source paper "resilient consensus through event based communication"):
  with members:
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "on connectivity and robustness in random intersection graphs"
    - "resilient randomized quantized consensus"
    - "a jamming resilient algorithm for self triggered network coordination"
    - "distributed optimization under adversarial nodes"
    - "fault and byzantine tolerant self stabilizing mobile robots gathering feasibility study"

Connected through hyperedge HE-6 (induced by source paper "exact byzantine consensus on arbitrary directed graphs under local broadcast model"):
  with members:
    - "exact byzantine consensus on undirected graphs under local broadcast model"
    - "exact byzantine consensus under local broadcast model"

Connected through hyperedge HE-7 (induced by source paper "resilient coordinated movement of connected autonomous vehicles"):
  with members:
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "cooperative look ahead control for fuel efficient and safe heavy duty vehicle platooning"

Connected through hyperedge HE-8 (induced by source paper "resilient consensus for multi agent systems subject to differential privacy requirements"):
  with members:
    - "resilient consensus of second order agent networks asynchronous update rules with delays"
    - "resilient randomized quantized consensus"
    - "r robustness and r s robustness of circulant graphs"
    - "exploiting nodes symmetries to control synchronization and consensus patterns in multiagent systems"
    - "a jamming resilient algorithm for self triggered network coordination"
    - "reaching approximate byzantine consensus with multi hop communication"
    - "differentially private distributed optimization"
    - "differentially private iterative synchronous consensus"

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.DC(Distributed, Parallel, and Cluster Computing)