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: "stable marriage with covering constraints a complete computational trichotomy"
  Abstract: We consider stable marriage problems equipped with covering constraints: here the input distinguishes a subset of women as well as a subset of men, and we seek a matching with fewest number of blocking pairs that matches all of the distinguished people. This concept strictly generalizes the notion of arranged marriages introduced by Knuth in 1976, in which the partner of each distinguished person is fixed a priori. #R##N#Our main result is a complete computational complexity trichotomy of the stable marriage problem with covering constraints, into polynomial-time solvable cases, fixed-parameter tractable cases, and cases that are W[1]-hard, for every choice among a set of natural parameters, namely the maximum length of preference lists for men and women, the number of distinguished men and women, and the number of blocking pairs allowed. Thereby, we fully answer an open problem of Hamada et al. (ESA 2011).

Connected through hyperedge HE-1 (induced by source paper "stable roommates with narcissistic single peaked and single crossing preferences"):
  with members:
    - "matchings under preferences strength of stability and trade offs"
    - "stable marriage with multi modal preferences"
    - "stable marriage with groups of similar agents"
    - "how hard is it to satisfy almost all roommates"
    - "balanced stable marriage how close is close enough"
    - "modeling single peakedness for votes with ties"
    - "single peaked consistency for weak orders is easy"
    - "clone structures in voters preferences"

Connected through hyperedge HE-2 (induced by source paper "parameterized complexity of stable roommates with ties and incomplete lists through the lens of graph parameters"):
  with members:
    - "sat encodings for treecut width and treedepth"
    - "stable marriage with multi modal preferences"
    - "stable marriage with groups of similar agents"
    - "on treewidth and stable marriage"
    - "how hard is it to satisfy almost all roommates"
    - "the stable roommates problem with short lists"
    - "acyclic preference systems in p2p networks"

Connected through hyperedge HE-3 (induced by source paper "stable marriage with groups of similar agents"):
  with members:
    - "on treewidth and stable marriage"
    - "balanced stable marriage how close is close enough"
    - "parameterized integer quadratic programming variables and coefficients"
    - "the complexity of approximately counting stable roommate assignments"
    - "the complexity of approximately counting stable matchings"
    - "complexity of coalition structure generation"

Connected through hyperedge HE-4 (induced by source paper "how hard is it to satisfy almost all roommates"):
  with members:
    - "stable marriage with multi modal preferences"
    - "stable marriage with groups of similar agents"
    - "balanced stable marriage how close is close enough"
    - "the stable roommates problem with short lists"
    - "almost optimal cover free families"
    - "linear time constructions of some d restriction problems"
    - "designing fpt algorithms for cut problems using randomized contractions"
    - "acyclic preference systems in p2p networks"

Connected through hyperedge HE-5 (induced by source paper "balanced stable marriage how close is close enough"):
  with members:
    - "stable marriage with groups of similar agents"
    - "on treewidth and stable marriage"
    - "how hard is it to satisfy almost all roommates"
    - "on parameterized complexity of group activity selection problems on social networks"
    - "group activity selection on social networks"
    - "raising the bar for vertex cover fixed parameter tractability above a higher guarantee"
    - "parameterized algorithmics for computational social choice nine research challenges"
    - "faster parameterized algorithms using linear programming"

Connected through hyperedge HE-6 (induced by source paper "envy free matchings with lower quotas"):
  with members:
    - "matchings with lower quotas algorithms and complexity"
    - "classified stable matching"

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.DS(Data Structures and Algorithms)