human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "a framework for allocating server time to spot and on demand services in cloud computing"):
  Abstract: Cloud computing delivers value to users by facilitating their access to computing capacity in periods when their need arises. An approach is to provide both on-demand and spot services on shared servers. The former allows users to access servers on demand at a fixed price and users occupy different periods of servers. The latter allows users to bid for the remaining unoccupied periods via dynamic pricing; however, without appropriate design, such periods may be arbitrarily small since on-demand users arrive randomly. This is also the current service model adopted by Amazon Elastic Cloud Compute. In this paper, we provide the first integral framework for sharing the time of servers between on-demand and spot services while optimally pricing spot instances. It guarantees that on-demand users can get served quickly while spot users can stably utilize servers for a properly long period once accepted, which is a key feature to make both on-demand and spot services accessible. Simulation results show that, by complementing the on-demand market with a spot market, a cloud provider can improve revenue by up to 464.7%. The framework is designed under assumptions which are met in real environments. It is a new tool that cloud operators can use to quantify the advantage of a hybrid spot and on-demand service, eventually making the case for operating such service model in their own infrastructures.

Includes members:
  Member "on the benefits of qos differentiated posted pricing in cloud computing an analytical model":
    also connected through other hyperedges:
      (none)
  Member "towards designing cost optimal policies to utilize iaas clouds under online learning":
    also connected through other hyperedges:
      (none)
  Member "a truthful 1 epsilon optimal mechanism for on demand cloud resource provisioning":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a distributed auctioneer for resource allocation in decentralized systems")
  Member "spot pricing in the cloud ecosystem a comparative investigation":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "using a predator prey model to explain variations of cloud spot price")
  Member "truthful online scheduling with commitments":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "online revenue maximization for server pricing")
  Member "algorithms for scheduling deadline sensitive malleable tasks":
    also connected through other hyperedges:
      (none)
  Member "fixed and market pricing for cloud services":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "on the cluster admission problem for cloud computing")

Question: Please tell me which class the source paper 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.PF(Performance)