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: "minimum connected transversals in graphs new hardness results and tractable cases using the price of connectivity"
  Abstract: We perform a systematic study in the computational complexity of the connected variant of three related transversal problems: Vertex Cover, Feedback Vertex Set, and Odd Cycle Transversal. Just like their original counterparts, these variants are NP-complete for general graphs. A graph $G$ is $H$-free for some graph $H$ if $G$ contains no induced subgraph isomorphic to $H$. It is known that Connected Vertex Cover is NP-complete even for $H$-free graphs if $H$ contains a claw or a cycle. We show that the two other connected variants also remain NP-complete if $H$ contains a cycle or claw. In the remaining case $H$ is a linear forest. We show that Connected Vertex Cover, Connected Feedback Vertex Set, and Connected Odd Cycle Transversal are polynomial-time solvable for $sP_2$-free graphs for every constant $s\geq 1$. For proving these results we use known results on the price of connectivity for vertex cover, feedback vertex set, and odd cycle transversal. This is the first application of the price of connectivity that results in polynomial-time algorithms.

Connected through hyperedge HE-1 (induced by source paper "induced subgraphs of bounded treewidth and the container method"):
  with members:
    - "on cycle transversals and their connected variants in the absence of a small linear forest"
    - "on the maximum weight independent set problem in graphs without induced cycles of length at least five"
    - "polynomial time algorithm for maximum weight independent set on p_6 free graphs"
    - "large induced subgraphs via triangulations and cmso"
    - "maximum weight independent sets in odd hole free graphs without dart or without bull"
    - "finding induced subgraphs via minimal triangulations"

Connected through hyperedge HE-2 (induced by source paper "on cycle transversals and their connected variants in the absence of a small linear forest"):
  with members:
    - "subexponential algorithms for variants of homomorphism problem in string graphs"
    - "connected vertex cover for sp_1 p_5 free graphs"
    - "polynomial time algorithm for maximum weight independent set on p_6 free graphs"
    - "independent feedback vertex set for p_5 free graphs"
    - "the price of connectivity for vertex cover"

Connected through hyperedge HE-3 (induced by source paper "connected vertex cover for sp_1 p_5 free graphs"):
  with members:
    - "contracting to a longest path in h free graphs"
    - "polynomial time algorithm for maximum weight independent set on p_6 free graphs"
    - "independent feedback vertex set for p_5 free graphs"
    - "contracting bipartite graphs to paths and cycles"
    - "maximum weight independent set in lclaw free graphs in polynomial time"
    - "the price of connectivity for vertex cover"

Connected through hyperedge HE-4 (induced by source paper "independent feedback vertex set for p_5 free graphs"):
  with members:
    - "independent feedback vertex sets for graphs of bounded diameter"
    - "polynomial time algorithm for maximum weight independent set on p_6 free graphs"
    - "dominating induced matchings in graphs containing no long claw"
    - "faster deterministic feedback vertex set"
    - "finding small separators in linear time via treewidth reduction"

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)