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 "sponsored search auctions with rich ads"):
  Abstract: The generalized second price (GSP) auction has served as the core selling mechanism for sponsored search ads for over a decade. However, recent trends expanding the set of allowed ad formats---to include a variety of sizes, decorations, and other distinguishing features---have raised critical problems for GSP-based platforms. Alternatives such as the Vickrey-Clarke-Groves (VCG) auction raise different complications because they fundamentally change the way prices are computed. In this paper we report on our efforts to redesign a search ad selling system from the ground up in this new context, proposing a mechanism that optimizes an entire slate of ads globally and computes prices that achieve properties analogous to those held by GSP in the original, simpler setting of uniform ads. A careful algorithmic coupling of allocation-optimization and pricing-computation allows our auction to operate within the strict timing constraints inherent in real-time ad auctions. We report performance results of the auction in Yahoo's Gemini Search platform.

Includes members:
  Member "gsp the cinderella of mechanism design":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "cost per action constrained auctions")
  Member "mechanism design for value maximizers":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "aiads automated and intelligent advertising system for sponsored search")
  Member "truthful outcomes from non truthful position auctions":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "gsp the cinderella of mechanism design")
  Member "gsp with general independent click through rates":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "envy regret and social welfare loss")
  Member "optimising trade offs among stakeholders in ad auctions":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a price per attention auction scheme using mouse cursor information")
  Member "a dynamic axiomatic approach to first price auctions":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "descending price algorithm for determining market clearing prices in matching markets")

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.GT(Computer Science and Game Theory)