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 weight triangulation is np hard"
  Abstract: A triangulation of a planar point set S is a maximal plane straight-line graph with vertex set S. In the minimum-weight triangulation (MWT) problem, we are looking for a triangulation of a given point set that minimizes the sum of the edge lengths. We prove that the decision version of this problem is NP-hard, using a reduction from PLANAR 1-IN-3-SAT. The correct working of the gadgets is established with computer assistance, using dynamic programming on polygonal faces, as well as the β-skeleton heuristic to certify that certain edges belong to the minimum-weight triangulation.

Connected through hyperedge HE-1 (induced by source paper "geometry and generation of a new graph planarity game"):
  with members:
    - "untangling a planar graph"
    - "a polynomial bound for untangling geometric planar graphs"
    - "on the obfuscation complexity of planar graphs"
    - "moving vertices to make drawings plane"

Connected through hyperedge HE-2 (induced by source paper "on the computational complexity of the bipartizing matching problem"):
  with members:
    - "decycling a graph by the removal of a matching new algorithmic and structural aspects in some classes of graphs"
    - "independent feedback vertex set for p_5 free graphs"
    - "on the non existence of polynomial kernels for p l free edge modification problems"

Connected through hyperedge HE-3 (induced by source paper "the complexity of helly b 1 epg graph recognition"):
  with members:
    - "edge intersection graphs of l shaped paths in grids"
    - "on edge intersection graphs of paths with 2 bends"

Connected through hyperedge HE-4 (induced by source paper "turning cliques into paths to achieve planarity"):
  with members:
    - "a survey on graph drawing beyond planarity"
    - "the partition spanning forest problem"
    - "on optimal 2 and 3 planar graphs"
    - "revisited experimental comparison of node link and matrix representations"
    - "nodetrix planarity testing with small clusters"
    - "an annotated bibliography on 1 planarity"
    - "computing nodetrix representations of clustered graphs"
    - "intersection link representations of graphs"

Connected through hyperedge HE-5 (induced by source paper "the inverse voronoi problem in graphs"):
  with members:
    - "on the minimum consistent subset problem"
    - "voronoi diagrams on planar graphs and computing the diameter in deterministic tilde o n 5 3 time"
    - "better tradeoffs for exact distance oracles in planar graphs"
    - "subquadratic algorithms for the diameter and the sum of pairwise distances in planar graphs"
    - "optimal parameterized algorithms for planar facility location problems using voronoi diagrams"
    - "near optimal sample compression for nearest neighbors"
    - "voronoi game on graphs"
    - "graph induced complex on point data"

Connected through hyperedge HE-6 (induced by source paper "not all equal and 1 in degree decompositions algorithmic complexity and applications"):
  with members:
    - "polynomial time algorithms for weighted efficient domination problems in at free graphs and dually chordal graphs"
    - "the parameterized complexity of domination type problems and application to linear codes"
    - "algorithmic complexity of proper labeling problems"
    - "efficient dominating and edge dominating sets for graphs and hypergraphs"

Connected through hyperedge HE-7 (induced by source paper "computing coverage kernels under restricted settings"):
  with members:
    - "depth distribution in high dimensions"
    - "improved approximation algorithms for geometric set cover"
    - "the problem of compatible representatives"

Connected through hyperedge HE-8 (induced by source paper "an eth tight exact algorithm for euclidean tsp"):
  with members:
    - "a framework for eth tight algorithms and lower bounds in geometric intersection graphs"
    - "the limited blessing of low dimensionality when 1 1 d is the best possible exponent for d dimensional geometric problems"
    - "fast hamiltonicity checking via bases of perfect matchings"

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.CG(Computational Geometry)