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: "price of anarchy for greedy auctions"
  Abstract: We consider auctions in which greedy algorithms, paired with first-price or critical-price payment rules, are used to resolve multi-parameter combinatorial allocation problems. We study the price of anarchy for social welfare in such auctions. We show for a variety of equilibrium concepts, including Bayes-Nash equilibrium and correlated equilibrium, the resulting price of anarchy bound is close to the approximation factor of the underlying greedy algorithm.

Connected through hyperedge HE-1 (induced by source paper "proportional dynamics in exchange economies"):
  with members:
    - "an alternating algorithm for finding linear arrow debreu market equilibrium"
    - "universal growth in production economies"
    - "a strongly polynomial algorithm for linear exchange markets"
    - "tracing equilibrium in dynamic markets via distributed adaptation"
    - "dynamics of distributed updating in fisher markets"
    - "selling complementary goods dynamics efficiency and revenue"
    - "best response dynamics in combinatorial auctions with item bidding"
    - "the price of anarchy in auctions"

Connected through hyperedge HE-2 (induced by source paper "dashboard mechanisms for online marketplaces"):
  with members:
    - "composable and efficient mechanisms"
    - "truthful mechanisms with implicit payment computation"

Connected through hyperedge HE-3 (induced by source paper "universal growth in production economies"):
  with members:
    - "selling complementary goods dynamics efficiency and revenue"
    - "best response dynamics in combinatorial auctions with item bidding"
    - "nash social welfare approximation for strategic agents"
    - "the price of anarchy in auctions"
    - "learning and efficiency in games with dynamic population"
    - "learning in auctions regret is hard envy is easy"
    - "average case performance of replicator dynamics in potential games via computing regions of attraction"
    - "concave generalized flows with applications to market equilibria"

Connected through hyperedge HE-4 (induced by source paper "optimal online contention resolution schemes via ex ante prophet inequalities"):
  with members:
    - "random order contention resolution schemes"
    - "prophet secretary surpassing the 1 1 e barrier"
    - "understanding the correlation gap for matchings"
    - "a stochastic probing problem with applications"
    - "matroid prophet inequalities"
    - "bayesian combinatorial auctions expanding single buyer mechanisms to many buyers"
    - "submodular function maximization via the multilinear relaxation and contention resolution schemes"
    - "mechanism design via correlation gap"

Connected through hyperedge HE-5 (induced by source paper "an improved welfare guarantee for first price auctions"):
  with members:
    - "the price of anarchy in auctions"
    - "on the efficiency of all pay mechanisms"
    - "no regret learning in bayesian games"
    - "price of anarchy for auction revenue"
    - "tight bounds for the price of anarchy of simultaneous first price auctions"
    - "composable and efficient mechanisms"

Connected through hyperedge HE-6 (induced by source paper "prior independent equilibria and linear multi dimensional bayesian games"):
  with members:
    - "network cournot competition"
    - "graphical models for game theory"
    - "prior independent auctions for risk averse agents"
    - "multi games and a double game extension of the prisoner s dilemma"
    - "the robust price of anarchy of altruistic games"

Connected through hyperedge HE-7 (induced by source paper "prophet secretary for combinatorial auctions and matroids"):
  with members:
    - "prophet inequalities made easy stochastic optimization by pricing non stochastic inputs"
    - "beyond matroids secretary problem and prophet inequality with general constraints"
    - "o log log rank competitive ratio for the matroid secretary problem"
    - "a simple o log log mathrm rank competitive algorithm for the matroid secretary problem"
    - "combinatorial auctions via posted prices"
    - "matroid prophet inequalities"
    - "bayesian combinatorial auctions expanding single buyer mechanisms to many buyers"
    - "mechanism design via correlation gap"

Connected through hyperedge HE-8 (induced by source paper "walrasian dynamics in multi unit markets"):
  with members:
    - "optimal multi unit mechanisms with private demands"
    - "best response dynamics in combinatorial auctions with item bidding"
    - "when does the price of anarchy tend to 1 in large walrasian auctions and fisher markets"
    - "the menu size complexity of auctions"
    - "non price equilibria in markets of discrete goods"
    - "on nash dynamics of matching market equilibria"
    - "multi unit auctions beyond roberts"

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.GT(Computer Science and Game Theory)