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 recognition of simple triangle graphs and of linear interval orders is polynomial"
  Abstract: Intersection graphs of geometric objects have been extensively studied, both due to their interesting structure and their numerous applications; prominent examples include interval graphs and permutation graphs. In this paper we study a natural graph class that generalizes both interval and permutation graphs, namely \emph{simple-triangle} graphs. Simple-triangle graphs - also known as \emph{PI} graphs (for Point-Interval) - are the intersection graphs of triangles that are defined by a point on a line $L_{1}$ and an interval on a parallel line $L_{2}$. They lie naturally between permutation and trapezoid graphs, which are the intersection graphs of line segments between $L_{1}$ and $L_{2}$ and of trapezoids between $L_{1}$ and $L_{2}$, respectively. Although various efficient recognition algorithms for permutation and trapezoid graphs are well known to exist, the recognition of simple-triangle graphs has remained an open problem since their introduction by Corneil and Kamula three decades ago. In this paper we resolve this problem by proving that simple-triangle graphs can be recognized in polynomial time. As a consequence, our algorithm also solves a longstanding open problem in the area of partial orders, namely the recognition of \emph{linear-interval orders}, i.e. of partial orders $P=P_{1}\cap P_{2}$, where $P_{1}$ is a linear order and $P_{2}$ is an interval order. This is one of the first results on recognizing partial orders $P$ that are the intersection of orders from two different classes $\mathcal{P}_{1}$ and $\mathcal{P}_{2}$. In complete contrast to this, partial orders $P$ which are the intersection of orders from the same class $\mathcal{P}$ have been extensively investigated, and in most cases the complexity status of these recognition problems has been already established.

Connected through hyperedge HE-1 (induced by source paper "linear semiorders and their incomparability graphs"):
  with members:
    - "recognizing simple triangle graphs by restricted 2 chain subgraph cover"
    - "a vertex ordering characterization of simple triangle graphs"

Connected through hyperedge HE-2 (induced by source paper "a linear time algorithm for maximum cardinality matching on cocomparability graphs"):
  with members:
    - "parameterized aspects of triangle enumeration"
    - "when can graph hyperbolicity be computed in linear time"
    - "recognizing simple triangle graphs by restricted 2 chain subgraph cover"
    - "a recognition algorithm for simple triangle graphs"
    - "fully polynomial time parameterized computations for graphs and matrices of low treewidth"
    - "graph isomorphism completeness for trapezoid graphs"
    - "polynomial fixed parameter algorithms a case study for longest path on interval graphs"
    - "new geometric representations and domination problems on tolerance and multitolerance graphs"

Connected through hyperedge HE-3 (induced by source paper "recognizing simple triangle graphs by restricted 2 chain subgraph cover"):
  with members:
    - "a vertex ordering characterization of simple triangle graphs"
    - "graph isomorphism completeness for trapezoid graphs"
    - "extending partial representations of function graphs and permutation graphs"
    - "the recognition of tolerance and bounded tolerance graphs"

Connected through hyperedge HE-4 (induced by source paper "a recognition algorithm for simple triangle graphs"):
  with members:
    - "recognizing simple triangle graphs by restricted 2 chain subgraph cover"
    - "a vertex ordering characterization of simple triangle graphs"
    - "graph isomorphism completeness for trapezoid graphs"
    - "the recognition of tolerance and bounded tolerance graphs"

Connected through hyperedge HE-5 (induced by source paper "a vertex ordering characterization of simple triangle graphs"):
  with members:
    - "recognizing simple triangle graphs by restricted 2 chain subgraph cover"
    - "graph isomorphism completeness for trapezoid graphs"
    - "ordering without forbidden patterns"

Connected through hyperedge HE-6 (induced by source paper "a simpler recognition algorithm for simple triangle graphs"):
  with members:
    - "graph isomorphism completeness for trapezoid graphs"
    - "the recognition of tolerance and bounded tolerance graphs"

Connected through hyperedge HE-7 (induced by source paper "graph isomorphism completeness for trapezoid graphs"):
  with members:
    - "isomorphism of graph classes related to the circular ones property"
    - "the recognition of tolerance and bounded tolerance graphs"

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)