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: "a rational convex program for linear arrow debreu markets"
  Abstract: We give a new, flow-type convex program describing equilibrium solutions to linear Arrow-Debreu markets. Whereas convex formulations were previously known [Nenakov, Primak 83; Jain 07; Cornet '89], our program exhibits several new features. It gives a simple necessary and sufficient condition and a concise proof of the existence and rationality of equilibria, settling an open question raised by Vazirani. As a consequence we also obtain a simple new proof of Mertens's result that the equilibrium prices form a convex polyhedral set.

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 "satiation in fisher markets and approximation of nash social welfare"):
  with members:
    - "near optimal online algorithms and fast approximation algorithms for resource allocation problems"
    - "a strongly polynomial algorithm for linear exchange markets"
    - "approximating the nash social welfare with budget additive valuations"
    - "finding fair and efficient allocations"
    - "convex program duality fisher markets and nash social welfare"
    - "nash social welfare for indivisible items under separable piecewise linear concave utilities"
    - "nash social welfare matrix permanent and stable polynomials"
    - "an improved combinatorial polynomial algorithm for the linear arrow debreu market"

Connected through hyperedge HE-3 (induced by source paper "an alternating algorithm for finding linear arrow debreu market equilibrium"):
  with members:
    - "generalized mirror descents in congestion games"
    - "settling the complexity of arrow debreu equilibria in markets with additively separable utilities"

Connected through hyperedge HE-4 (induced by source paper "a strongly polynomial algorithm for linear exchange markets"):
  with members:
    - "a simpler and faster strongly polynomial algorithm for generalized flow maximization"
    - "improved balanced flow computation using parametric flow"
    - "an improved combinatorial polynomial algorithm for the linear arrow debreu market"
    - "a strongly polynomial algorithm for generalized flow maximization"
    - "a combinatorial polynomial algorithm for the linear arrow debreu market"
    - "concave generalized flows with applications to market equilibria"

Connected through hyperedge HE-5 (induced by source paper "convex program duality fisher markets and nash social welfare"):
  with members:
    - "when does the price of anarchy tend to 1 in large walrasian auctions and fisher markets"
    - "apx hardness of maximizing nash social welfare with indivisible items"
    - "welfare maximization with production costs a primal dual approach"
    - "online packing and covering framework with convex objectives"
    - "selfishmigrate a scalable algorithm for non clairvoyantly scheduling heterogeneous processors"
    - "market equilibrium with transaction costs"

Connected through hyperedge HE-6 (induced by source paper "new convex programs for fisher s market model and its generalizations"):
  with members:
    - "welfare maximization with production costs a primal dual approach"
    - "online packing and covering framework with convex objectives"
    - "selfishmigrate a scalable algorithm for non clairvoyantly scheduling heterogeneous processors"

Connected through hyperedge HE-7 (induced by source paper "improved balanced flow computation using parametric flow"):
  with members:
    - "an improved combinatorial polynomial algorithm for the linear arrow debreu market"
    - "a combinatorial polynomial algorithm for the linear arrow debreu market"

Connected through hyperedge HE-8 (induced by source paper "ascending price algorithms for unknown markets"):
  with members:
    - "approximating the nash social welfare with budget additive valuations"
    - "convex program duality fisher markets and nash social welfare"
    - "nash social welfare for indivisible items under separable piecewise linear concave utilities"
    - "an improved combinatorial polynomial algorithm for the linear arrow debreu market"
    - "convergence of tâtonnement in fisher markets"
    - "competitive algorithms from competitive equilibria non clairvoyant scheduling under polyhedral constraints"
    - "tatonnement in ongoing markets of complementary goods"
    - "the complexity of non monotone markets"

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)