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: "the control complexity of r approval from the single peaked case to the general case"
  Abstract: We investigate the complexity of $r$-Approval control problems in $k$-peaked elections, where at most $k$ peaks are allowed in each vote with respect to an order of the candidates. We show that most NP-hardness results in general elections also hold in k-peaked elections even for $k=2,3$. On the other hand, we derive polynomial-time algorithms for some problems for $k=2$. All our NP-hardness results apply to Approval and sincere-strategy preference-based Approval as well. Our study leads to many dichotomy results for the problems considered in this paper, with respect to the values of $k$ and $r$. In addition, we study $r$-Approval control problems from the viewpoint of parameterized complexity and achieve both fixed-parameter tractability results and W-hardness results, with respect to the solution size. Along the way exploring the complexity of control problems, we obtain two byproducts which are of independent interest. First, we prove that every graph of maximum degree 3 admits a specific 2-interval representation where every 2-interval corresponding to a vertex contains a trivial interval and, moreover, 2-intervals may only intersect at the endpoints of the intervals. Second, we develop a fixed-parameter tractable algorithm for a generalized $r$-Set Packing problem with respect to the solution size, where each element in the given universal set is allowed to occur in more than one r-subset in the solution.

Connected through hyperedge HE-1 (induced by source paper "on the complexity of constructive control under nearly single peaked preferences"):
  with members:
    - "computational aspects of nearly single peaked electorates"
    - "reinstating combinatorial protections for manipulation and bribery in single peaked and nearly single peaked electorates"
    - "structure in dichotomous preferences"
    - "on the computation of fully proportional representation"
    - "the complexity of fully proportional representation for single crossing electorates"
    - "the complexity of manipulative attacks in nearly single peaked electorates"
    - "multimode control attacks on elections"
    - "the complexity of manipulating k approval elections"

Connected through hyperedge HE-2 (induced by source paper "approval voting with intransitive preferences"):
  with members:
    - "algorithms for destructive shift bribery"
    - "complexity of shift bribery in committee elections"
    - "frugal bribery in voting"
    - "properties of multiwinner voting rules"
    - "how credible is the prediction of a party based election"
    - "justified representation in approval based committee voting"
    - "weighted electoral control"
    - "the complexity of manipulating k approval elections"

Connected through hyperedge HE-3 (induced by source paper "computational aspects of nearly single peaked electorates"):
  with members:
    - "on the likelihood of single peaked preferences"
    - "are there any nicely structured preference profiles nearby"
    - "structure in dichotomous preferences"
    - "on the computation of fully proportional representation"
    - "the complexity of fully proportional representation for single crossing electorates"
    - "the complexity of manipulative attacks in nearly single peaked electorates"
    - "clone structures in voters preferences"
    - "the shield that never was societies with single peaked preferences are more open to manipulation and control"

Connected through hyperedge HE-4 (induced by source paper "how hard is it to control a group"):
  with members:
    - "the complexity of multiwinner voting rules with variable number of winners"
    - "structure in dichotomous preferences"
    - "computational aspects of multi winner approval voting"
    - "the complexity of manipulating k approval elections"
    - "anyone but him the complexity of precluding an alternative"

Connected through hyperedge HE-5 (induced by source paper "are there any nicely structured preference profiles nearby"):
  with members:
    - "computational aspects of nearly single peaked electorates"
    - "the one dimensional euclidean domain finitely many obstructions are not enough"
    - "generalizing the single crossing property on lines and trees to intermediate preferences on median graphs"
    - "parameterized algorithmics for computational social choice nine research challenges"
    - "combinatorial voter control in elections"
    - "on the computation of fully proportional representation"
    - "the complexity of fully proportional representation for single crossing electorates"
    - "the complexity of manipulative attacks in nearly single peaked electorates"

Connected through hyperedge HE-6 (induced by source paper "parameterized algorithmics for computational social choice nine research challenges"):
  with members:
    - "computational aspects of nearly single peaked electorates"
    - "prices matter for the parameterized complexity of shift bribery"
    - "are there any nicely structured preference profiles nearby"
    - "campaign management under approval driven voting rules"
    - "complexity of control behaviors in k peaked elections for a variant of approval voting"
    - "approximating the maxcover problem with bounded frequencies in fpt time"
    - "computing socially efficient cake divisions"
    - "confronting intractability via parameters"

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)