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: "scheduling under dynamic speed scaling for minimizing weighted completion time and energy consumption"
  Abstract: Since a few years there is an increasing interest in minimizing the energy consumption of computing systems. However in a shared computing system, users want to optimize their experienced quality of service, at the price of a high energy consumption. In this work, we address the problem of optimizing and designing mechanisms for a linear combination of weighted completion time and energy consumption on a single machine with dynamic speed-scaling. We show that minimizing linear combination reduces to a unit speed scheduling problem under a polynomial penalty function. In the mechanism design setting, we define a cost share mechanism and study its properties, showing that it is truthful and the overcharging of total cost share is bounded by a constant.

Connected through hyperedge HE-1 (induced by source paper "mechanism design for aggregating energy consumption and quality of service in speed scaling scheduling"):
  with members:
    - "resource cost aware scheduling"
    - "the local global conjecture for scheduling with non linear cost"
    - "dual techniques for scheduling on a machine with varying speed"
    - "energy in computing systems with speed scaling optimization and mechanisms design"

Connected through hyperedge HE-2 (induced by source paper "the local global conjecture for scheduling with non linear cost"):
  with members:
    - "a primal dual approximation algorithm for min sum single machine scheduling problems"
    - "scheduling on a machine with varying speed minimizing cost and energy via dual schedules"
    - "dual techniques for scheduling on a machine with varying speed"
    - "energy in computing systems with speed scaling optimization and mechanisms design"
    - "the geometry of scheduling"

Connected through hyperedge HE-3 (induced by source paper "order properties for single machine scheduling with non linear cost"):
  with members:
    - "dual techniques for scheduling on a machine with varying speed"
    - "the geometry of scheduling"

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)