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: "multiple frequency selection in dvfs enabled processors to minimize energy consumption"
  Abstract: This chapter contains sections titled:      Introduction       Energy Efficiency in HPC Systems       Exploitation of Dynamic Voltage-Frequency Scaling       Preliminaries       Energy-Aware Scheduling via DVFS       Experimental Results       Conclusion       References

Connected through hyperedge HE-1 (induced by source paper "a primarily survey on energy efficiency in cloud and distributed computing systems"):
  with members:
    - "a task based sensor centeric model for overall energy consumption"
    - "a study on modeling of dependency between configuration parameters and overall energy consumption in wireless sensor network wsn"
    - "some observations on optimal frequency selection in dvfs based energy consumption minimization"

Connected through hyperedge HE-2 (induced by source paper "energy aware scheduling using dynamic voltage frequency scaling"):
  with members:
    - "some observations on optimal frequency selection in dvfs based energy consumption minimization"

Connected through hyperedge HE-3 (induced by source paper "an introduction on dependency between hardware life time components and dynamic voltage scaling"):
  with members:
    - "some observations on optimal frequency selection in dvfs based energy consumption minimization"

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)