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: "online service with delay"
  Abstract: In this paper, we introduce the online service with delay problem. In this problem, there are $n$ points in a metric space that issue service requests over time, and a server that serves these requests. The goal is to minimize the sum of distance traveled by the server and the total delay in serving the requests. This problem models the fundamental tradeoff between batching requests to improve locality and reducing delay to improve response time, that has many applications in operations management, operating systems, logistics, supply chain management, and scheduling. #R##N#Our main result is to show a poly-logarithmic competitive ratio for the online service with delay problem. This result is obtained by an algorithm that we call the preemptive service algorithm. The salient feature of this algorithm is a process called preemptive service, which uses a novel combination of (recursive) time forwarding and spatial exploration on a metric space. We hope this technique will be useful for related problems such as reordering buffer management, online TSP, vehicle routing, etc. We also generalize our results to $k > 1$ servers.

Connected through hyperedge HE-1 (induced by source paper "on bin packing with clustering and bin packing with delays"):
  with members:
    - "a new lower bound for classic online bin packing"
    - "a new and improved algorithm for online bin packing"
    - "a match in time saves nine deterministic online matching with delays"
    - "online matching haste makes waste"

Connected through hyperedge HE-2 (induced by source paper "general framework for metric optimization problems with delay or with deadlines"):
  with members:
    - "a primal dual online deterministic algorithm for matching with delays"
    - "a match in time saves nine deterministic online matching with delays"
    - "online matching haste makes waste"

Connected through hyperedge HE-3 (induced by source paper "set cover and vertex cover with delay"):
  with members:
    - "a primal dual online deterministic algorithm for matching with delays"
    - "deterministic min cost matching with delays"
    - "a match in time saves nine deterministic online matching with delays"
    - "online and dynamic algorithms for set cover"
    - "online matching haste makes waste"
    - "the online disjoint set cover problem and its applications"
    - "semi streaming set cover"
    - "minimum latency submodular cover"

Connected through hyperedge HE-4 (induced by source paper "a primal dual online deterministic algorithm for matching with delays"):
  with members:
    - "a match in time saves nine deterministic online matching with delays"
    - "online matching haste makes waste"
    - "better approximation bounds for the joint replenishment problem"

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.DS(Data Structures and Algorithms)