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: "optimal gradient clock synchronization in dynamic networks"
  Abstract: We study the problem of clock synchronization in highly dynamic networks, where communication links can appear or disappear at any time. The nodes in the network are equipped with hardware clocks, but the rate of the hardware clocks can vary arbitrarily within specific bounds, and the estimates that nodes can obtain about the clock values of other nodes are inherently inaccurate. Our goal in this setting is to output a logical clock at each node, such that the logical clocks of any two nodes are not too far apart, and nodes that remain close to each other in the network for a long time are better synchronized than distant nodes. This property is called gradient clock synchronization. #R##N#Gradient clock synchronization has been widely studied in the static setting, where the network topology does not change. We show that the asymptotically optimal bounds obtained for the static case also apply to our highly dynamic setting: if two nodes remain at distance d from each other for sufficiently long, it is possible to upper bound the difference between their clock values by O(d*log(D/d)), where D is the diameter of the network. This is known to be optimal for static networks, and since a static network is a special case of a dynamic network, it is optimal for dynamic networks as well. Furthermore, we show that our algorithm has optimal stabilization time: when a path of length d appears between two nodes, the time required until the clock skew between the two nodes is reduced to O(d*log(D/d)) is O(D), which we prove is optimal.

Connected through hyperedge HE-1 (induced by source paper "pals plesiochronous and locally synchronous systems"):
  with members:
    - "gradient clock synchronization using reference broadcasts"

Connected through hyperedge HE-2 (induced by source paper "fault tolerant gradient clock synchronization"):
  with members:
    - "self stabilising byzantine clock synchronisation is almost as easy as consensus"
    - "self stabilizing byzantine clock synchronization with optimal precision"
    - "gradient clock synchronization using reference broadcasts"
    - "self stabilizing pulse synchronization inspired by biological pacemaker networks"

Connected through hyperedge HE-3 (induced by source paper "local distributed algorithms in highly dynamic networks"):
  with members:
    - "simple dynamic algorithms for maximal independent set and other problems"
    - "fully dynamic maximal independent set with sublinear update time"
    - "improved algorithms for fully dynamic maximal independent set"
    - "the cost of global broadcast in dynamic radio networks"
    - "information spreading in dynamic networks under oblivious adversaries"
    - "optimal dynamic distributed mis"
    - "enabling minimal dominating set in highly dynamic distributed systems"
    - "an improved distributed algorithm for maximal independent set"

Connected through hyperedge HE-4 (induced by source paper "clock synchronization and distributed estimation in highly dynamic networks an information theoretic approach"):
  with members:
    - "breathe before speaking efficient information dissemination despite noisy limited and anonymous communication"
    - "information theoretic proofs of entropy power inequalities"
    - "coding for errors and erasures in random network coding"

Connected through hyperedge HE-5 (induced by source paper "lower bounds on information dissemination in dynamic networks"):
  with members:
    - "information spreading in dynamic networks"
    - "information spreading in dynamic graphs"
    - "one packet suffices highly efficient packetized network coding with finite memory"
    - "information spreading in stationary markovian evolving graphs"
    - "faster information dissemination in dynamic networks via network coding"
    - "analyzing network coding gossip made easy"

Connected through hyperedge HE-6 (induced by source paper "causality influence and computation in possibly disconnected dynamic networks"):
  with members:
    - "faster information dissemination in dynamic networks via network coding"
    - "time varying graphs and dynamic networks"
    - "analyzing network coding gossip made easy"
    - "passively mobile communicating machines that use restricted space"
    - "the computational power of population protocols"

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)