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: "paradoxes in social networks with multiple products"
  Abstract: Recently, we introduced in arXiv:1105.2434 a model for product adoption in social networks with multiple products, where the agents, influenced by their neighbours, can adopt one out of several alternatives. We identify and analyze here four types of paradoxes that can arise in these networks. To this end, we use social network games that we recently introduced in arxiv:1202.2209. These paradoxes shed light on possible inefficiencies arising when one modifies the sets of products available to the agents forming a social network. One of the paradoxes corresponds to the well-known Braess paradox in congestion games and shows that by adding more choices to a node, the network may end up in a situation that is worse for everybody. We exhibit a dual version of this, where removing available choices from someone can eventually make everybody better off. The other paradoxes that we identify show that by adding or removing a product from the choice set of some node may lead to permanent instability. Finally, we also identify conditions under which some of these paradoxes cannot arise.

Connected through hyperedge HE-1 (induced by source paper "convergence of opinion diffusion is pspace complete"):
  with members:
    - "pspace completeness of majority automata networks"
    - "social networks with competing products"

Connected through hyperedge HE-2 (induced by source paper "paradoxical examples of social networks games with product choice"):
  with members:
    - "social network games"

Connected through hyperedge HE-3 (induced by source paper "social network games with obligatory product selection"):
  with members:
    - "graphical models for game theory"
    - "choosing products in social networks"
    - "on the hardness of network design for bottleneck routing games"
    - "social network games"
    - "diffusion in social networks with competing products"

Connected through hyperedge HE-4 (induced by source paper "social network games"):
  with members:
    - "graphical models for game theory"
    - "social network games with obligatory product selection"
    - "choosing products in social networks"
    - "a classification of weakly acyclic games"
    - "social networks with competing products"
    - "diffusion in social networks with competing products"

Connected through hyperedge HE-5 (induced by source paper "social networks with competing products"):
  with members:
    - "choosing products in social networks"
    - "social network games"
    - "diffusion in social networks with competing products"
    - "competitive contagion in networks"
    - "adaptive submodularity theory and applications in active learning and stochastic optimization"

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)