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: "matroids are immune to braess paradox"
  Abstract: The famous Braess paradox describes the following phenomenon: It might happen that the improvement of resources, like building a new street within a congested network, may in fact lead to larger costs for the players in an equilibrium. In this paper we consider general nonatomic congestion games and give a characterization of the maximal combinatorial property of strategy spaces for which Braess paradox does not occur. In a nutshell, bases of matroids are exactly this maximal structure. We prove our characterization by two novel sensitivity results for convex separable optimization problems over polymatroid base polyhedra which may be of independent interest.

Connected through hyperedge HE-1 (induced by source paper "negative prices in network pricing games"):
  with members:
    - "toll caps in privatized road networks"
    - "inefficiencies in network models a graph theoretic perspective"
    - "approximate revenue maximization with multiple items"
    - "new complexity results and algorithms for the minimum tollbooth problem"
    - "stackelberg shortest path tree game revisited"
    - "the stackelberg minimum spanning tree game"
    - "stackelberg network pricing is hard to approximate"
    - "improved hardness of approximation for stackelberg shortest path pricing"

Connected through hyperedge HE-2 (induced by source paper "path deviations outperform approximate stability in heterogeneous congestion games"):
  with members:
    - "the impact of worst case deviations in non atomic network routing games"
    - "asymptotically tight bounds for inefficiency in risk averse selfish routing"
    - "the burden of risk aversion in mean risk selfish routing"
    - "on the performance of approximate equilibria in congestion games"

Connected through hyperedge HE-3 (induced by source paper "informational braess paradox the effect of information on traffic congestion"):
  with members:
    - "effects of information heterogeneity in bayesian routing games"
    - "inducing approximately optimal flow using truthful mediators"
    - "the burden of risk aversion in mean risk selfish routing"
    - "when more information reduces the speed of learning"
    - "groupthink and the failure of information aggregation in large groups"
    - "on the hardness of signaling"
    - "playing the wrong game smoothness bounds for congestion games with behavioral biases"

Connected through hyperedge HE-4 (induced by source paper "a polynomial time algorithm for detecting the possibility of braess paradox in directed graphs"):
  with members:
    - "inefficiencies in network models a graph theoretic perspective"

Connected through hyperedge HE-5 (induced by source paper "uniqueness of equilibria in atomic splittable polymatroid congestion games"):
  with members:
    - "resource competition on integral polymatroids"
    - "resource buying games"
    - "the uniqueness property for networks with several origin destination pairs"

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)