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: "polynomial time algorithm for maximum weight independent set on p_6 free graphs"
  Abstract: In the classic Maximum Weight Independent Set problem we are given a graph $G$ with a nonnegative weight function on vertices, and the goal is to find an independent set in $G$ of maximum possible weight. While the problem is NP-hard in general, we give a polynomial-time algorithm working on any $P_6$-free graph, that is, a graph that has no path on $6$ vertices as an induced subgraph. This improves the polynomial-time algorithm on $P_5$-free graphs of Lokshtanov et al. (SODA 2014), and the quasipolynomial-time algorithm on $P_6$-free graphs of Lokshtanov et al (SODA 2016). The main technical contribution leading to our main result is enumeration of a polynomial-size family $\mathcal{F}$ of vertex subsets with the following property: for every maximal independent set $I$ in the graph, $\mathcal{F}$ contains all maximal cliques of some minimal chordal completion of $G$ that does not add any edge incident to a vertex of $I$.

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"
    - "minimum connected transversals in graphs new hardness results and tractable cases using the price of connectivity"
    - "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 "theta triangle free and even hole k 4 free graphs part 2 bounds on treewidth"):
  with members:
    - "colouring diamond free graphs"
    - "on the structure of pan even hole free graphs"
    - "maximum weight independent sets for p_7 triangle free graphs in polynomial time"
    - "clique width of graph classes defined by two forbidden induced subgraphs"

Connected through hyperedge HE-3 (induced by source paper "subexponential time algorithms for finding large induced sparse subgraphs"):
  with members:
    - "deleting vertices to graphs of bounded genus"
    - "exact algorithms via monotone local search"
    - "tight running time lower bounds for vertex deletion problems"
    - "hitting forbidden subgraphs in graphs of bounded treewidth"
    - "large induced subgraphs via triangulations and cmso"
    - "largest chordal and interval subgraphs faster than 2 n"
    - "finding a maximum induced degenerate subgraph faster than 2 n"
    - "problems parameterized by treewidth tractable in single exponential time a logical approach"

Connected through hyperedge HE-4 (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"
    - "minimum connected transversals in graphs new hardness results and tractable cases using the price of connectivity"
    - "independent feedback vertex set for p_5 free graphs"
    - "the price of connectivity for vertex cover"

Connected through hyperedge HE-5 (induced by source paper "when maximum stable set can be solved in fpt time"):
  with members:
    - "maximum independent sets in subcubic graphs new results"
    - "parameterized complexity of independent set in h free graphs"
    - "maximum weight independent sets for p_7 triangle free graphs in polynomial time"
    - "improved fpt algorithms for weighted independent set in bull free graphs"
    - "deciding first order properties of nowhere dense graphs"

Connected through hyperedge HE-6 (induced by source paper "quasi polynomial time approximation schemes for the maximum weight independent set problem in h free graphs"):
  with members:
    - "on the maximum weight independent set problem in graphs without induced cycles of length at least five"

Connected through hyperedge HE-7 (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"
    - "minimum connected transversals in graphs new hardness results and tractable cases using the price of connectivity"
    - "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-8 (induced by source paper "independent feedback vertex set for p_5 free graphs"):
  with members:
    - "minimum connected transversals in graphs new hardness results and tractable cases using the price of connectivity"
    - "independent feedback vertex sets for graphs of bounded diameter"
    - "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)