human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "participatory budgeting models and approaches"):
  Abstract: Participatory budgeting is a democratic approach to deciding the funding of public projects, which has been adopted in many cities across the world. We present a survey of research on participatory budgeting emerging from the computational social choice literature, which draws ideas from computer science and microeconomic theory. We present a mathematical model for participatory budgeting, which charts existing models across different axes including whether the projects are treated as "divisible" or "indivisible" and whether there are funding limits on individual projects. We then survey various approaches and methods from the literature, giving special emphasis on issues of preference elicitation, welfare objectives, fairness axioms, and voter incentives. Finally, we discuss several directions in which research on participatory budgeting can be extended in the future.

Includes members:
  Member "truthful aggregation of budget proposals":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "who is in your top three optimizing learning in elections with many candidates")
  Member "markets for public decision making":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "proportionally fair clustering")
  Member "fair allocation of indivisible public goods":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "proportionally fair clustering")
  Member "proportionally representative participatory budgeting axioms and algorithms":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "developments in multi agent fair allocation")
  Member "fair mixing the case of dichotomous preferences":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "developments in multi agent fair allocation")
  Member "iterative local voting for collective decision making in continuous spaces":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "who is in your top three optimizing learning in elections with many candidates")
  Member "the impossibility of extending random dictatorship to weak preferences":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "keeping your friends close land allocation with friends")
  Member "the core of the participatory budgeting problem":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "proportionally fair clustering")

Question: Please tell me which class the source paper 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)