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: "new candidates welcome possible winners with respect to the addition of new candidates"
  Abstract: In voting contexts, some new candidates may show up in the course of the process. In this case, we may want to determine which of the initial candidates are possible winners, given that a fixed number $k$ of new candidates will be added. We give a computational study of this problem, focusing on scoring rules, and we provide a formal comparison with related problems such as control via adding candidates or cloning.

Connected through hyperedge HE-1 (induced by source paper "the complexity of online bribery in sequential elections extended abstract"):
  with members:
    - "the complexity of online bribery in sequential elections"
    - "computational social choice and computational complexity bffs"
    - "high multiplicity election problems"
    - "prices matter for the parameterized complexity of shift bribery"
    - "the complexity of controlling candidate sequential elections"
    - "the complexity of online manipulation of sequential elections"
    - "the complexity of online voter control in sequential elections"
    - "equilibria of plurality voting with abstentions"

Connected through hyperedge HE-2 (induced by source paper "weighted electoral control"):
  with members:
    - "a control dichotomy for pure scoring rules"
    - "possible winners in noisy elections"
    - "control in the presence of manipulators cooperative and competitive cases"
    - "schulze and ranked pairs voting are fixed parameter tractable to bribe manipulate and control"
    - "how many vote operations are needed to manipulate a voting system"
    - "control complexity in bucklin fallback and plurality voting an experimental approach"
    - "an atypical survey of typical case heuristic algorithms"
    - "the complexity of manipulative attacks in nearly single peaked electorates"

Connected through hyperedge HE-3 (induced by source paper "control in the presence of manipulators cooperative and competitive cases"):
  with members:
    - "x then x manipulation of same system runoff elections"
    - "online voter control in sequential elections"
    - "an atypical survey of typical case heuristic algorithms"
    - "the complexity of online manipulation of sequential elections"
    - "multimode control attacks on elections"
    - "normalized range voting broadly resists control"
    - "control complexity in fallback voting"
    - "where are the really hard manipulation problems the phase transition in manipulating the veto rule"

Connected through hyperedge HE-4 (induced by source paper "new results on equilibria in strategic candidacy"):
  with members:
    - "cloning in elections finding the possible winners"
    - "multimode control attacks on elections"
    - "anyone but him the complexity of precluding an alternative"

Connected through hyperedge HE-5 (induced by source paper "the complexity of controlling candidate sequential elections"):
  with members:
    - "control in the presence of manipulators cooperative and competitive cases"
    - "online voter control in sequential elections"
    - "the complexity of online manipulation of sequential elections"
    - "the complexity of online voter control in sequential elections"
    - "the complexity of manipulative attacks in nearly single peaked electorates"
    - "multimode control attacks on elections"
    - "normalized range voting broadly resists control"
    - "equilibria of plurality voting with abstentions"

Connected through hyperedge HE-6 (induced by source paper "the complexity of online manipulation of sequential elections"):
  with members:
    - "online voter control in sequential elections"
    - "an atypical survey of typical case heuristic algorithms"
    - "determining possible and necessary winners under common voting rules given partial orders"
    - "taking the final step to a full dichotomy of the possible winner problem in pure scoring rules"
    - "towards a dichotomy for the possible winner problem in elections based on scoring rules"
    - "equilibria of plurality voting with abstentions"
    - "towards a dichotomy of finding possible winners in elections based on scoring rules"
    - "a richer understanding of the complexity of election systems"

Connected through hyperedge HE-7 (induced by source paper "determining possible and necessary winners under common voting rules given partial orders"):
  with members:
    - "common voting rules as maximum likelihood estimators"
    - "taking the final step to a full dichotomy of the possible winner problem in pure scoring rules"
    - "towards a dichotomy for the possible winner problem in elections based on scoring rules"
    - "the complexity of probabilistic lobbying"
    - "manipulating tournaments in cup and round robin competitions"
    - "eliciting single peaked preferences using comparison queries"
    - "dichotomy for voting systems"
    - "cp nets a tool for representing and reasoning with conditional ceteris paribus preference statements"

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.AI(Artificial Intelligence)