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: "an integrated spectrum and information market for green cognitive communications"
  Abstract: A database-assisted TV white space network can achieve the goal of green cognitive communication by effectively reducing the energy consumption in cognitive communications. The success of such a novel network relies on a proper business model that provides incentives for all parties involved. In this paper, we propose an integrated spectrum and information market for a database-assisted TV white space network, where the geo-location database serves as both the spectrum market platform and the information market platform. We study the interactions among the database, the spectrum licensee, and unlicensed users by modelling the system as a three-stage sequential decision process. In Stage I, the database and the licensee negotiate regarding the commission for the licensee to use the spectrum market platform. In Stage II, the database and the licensee compete for selling information or channels to unlicensed users. In Stage III, unlicensed users determine whether they should buy exclusive usage right of licensed channels from the licensee or information regarding unlicensed channels from the database. Analyzing such a three-stage model is challenging due to the co-existence of both positive and negative network externalities in the information market. Despite of this, we are able to characterize how the network externalities affect the equilibrium behaviors of all parties involved. We analytically show that in this integrated market, the licensee can never get a market share more than half. Our numerical results further show that the proposed integrated market can improve the network profit up to 87%, compared with a pure information market.

Connected through hyperedge HE-1 (induced by source paper "multi cap optimization for wireless data plans with time flexibility"):
  with members:
    - "duopoly competition for mobile data plans with time flexibility"
    - "economic viability of data trading with rollover"
    - "a novel mobile data contract design with time flexibility"
    - "exploring time flexibility in wireless data plans"
    - "on optimal two sided pricing of congested networks"
    - "economic analysis of crowdsourced wireless community networks"
    - "the role of data cap in optimal two part network pricing"
    - "a survey of smart data pricing past proposals current plans and future trends"

Connected through hyperedge HE-2 (induced by source paper "duopoly competition for mobile data plans with time flexibility"):
  with members:
    - "economic viability of data trading with rollover"
    - "a novel mobile data contract design with time flexibility"
    - "exploring time flexibility in wireless data plans"
    - "the role of data cap in optimal two part network pricing"
    - "time and location aware mobile data pricing"
    - "mine gold to deliver green cognitive communications"
    - "economic viability of paris metro pricing for digital services"
    - "a survey of smart data pricing past proposals current plans and future trends"

Connected through hyperedge HE-3 (induced by source paper "a novel mobile data contract design with time flexibility"):
  with members:
    - "duopoly competition for mobile data plans with time flexibility"
    - "a survey of smart data pricing past proposals current plans and future trends"

Connected through hyperedge HE-4 (induced by source paper "scalable mobile crowdsensing via peer to peer data sharing"):
  with members:
    - "economic analysis of crowdsourced wireless community networks"
    - "dynamic routing for social information sharing"
    - "providing long term participation incentive in participatory sensing"
    - "a game theoretic analysis of user behaviors in crowdsourced wireless community networks"
    - "mine gold to deliver green cognitive communications"
    - "hysim a hybrid spectrum and information market for tv white space networks"
    - "distributed time sensitive task selection in mobile crowdsensing"
    - "combining spot and futures markets a hybrid market approach to dynamic spectrum access"

Connected through hyperedge HE-5 (induced by source paper "achieving an efficient and fair equilibrium through taxation"):
  with members:
    - "two sided matching based cooperative spectrum sharing"
    - "economic analysis of crowdsourced wireless community networks"
    - "public wi fi monetization via advertising"
    - "efficient and fair collaborative mobile internet access"
    - "mine gold to deliver green cognitive communications"
    - "combining spot and futures markets a hybrid market approach to dynamic spectrum access"
    - "the robust price of anarchy of altruistic games"
    - "stable nash equilibria of medium access games under symmetric socially altruistic behavior"

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)