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: "on the complexity of minimum link path problems"
  Abstract: We revisit the minimum-link path problem: Given a polyhedral domain and two points in it, connect the points by a polygonal path with minimum number of edges. We consider settings where the vertices and/or the edges of the path are restricted to lie on the boundary of the domain, or can be in its interior. Our results include bit complexity bounds, a novel general hardness construction, and a polynomial-time approximation scheme. We fully characterize the situation in 2 dimensions, and provide first results in dimensions 3 and higher for several variants of the problem.  Concretely, our results resolve several open problems. We prove that computing the minimum-link diffuse reflection path, motivated by ray tracing in computer graphics, is NP-hard, even for two-dimensional polygonal domains with holes. This has remained an open problem [Ghosh et al.'2012] despite a large body of work on the topic. We also resolve the open problem from [Mitchell et al.'1992] mentioned in the handbook [Goodman and Rourke'2004] (see Chapter 27.5, Open problem 3) and The Open Problems Project [http://maven.smith.edu/~orourke/TOPP/] (see Problem 22): "What is the complexity of the minimum-link path problem in 3-space?" Our results imply that the problem is NP-hard even on terrains (and hence, due to discreteness of the answer, there is no FPTAS unless P=NP), but admits a PTAS.

Connected through hyperedge HE-1 (induced by source paper "global curve simplification"):
  with members:
    - "polyline simplification has cubic complexity"

Connected through hyperedge HE-2 (induced by source paper "a framework for robust realistic geometric computations"):
  with members:
    - "chirotopes of random points in space are realizable on a small integer grid"
    - "smoothed analysis of order types"
    - "optimal curve straightening is exists mathbb r complete"
    - "beyond worst case analysis"
    - "the complexity of drawing a graph in a polygonal region"
    - "on order types of random point sets"
    - "recognition and complexity of point visibility graphs"
    - "convex hull of points lying on lines in o nlogn time after preprocessing"

Connected through hyperedge HE-3 (induced by source paper "geometric secluded paths and planar satisfiability"):
  with members:
    - "on the computational complexity of length and neighborhood constrained path problems"
    - "an efficient algorithm for computing high quality paths amid polygonal obstacles"
    - "quickest visibility queries in polygonal domains"
    - "planar 3 sat with a clause variable cycle"
    - "a polynomial time algorithm for finding an approximate shortest path amid weighted regions"
    - "parameterized complexity of secluded connectivity problems"
    - "a note on the unsolvability of the weighted region shortest path problem"
    - "minimum link paths revisited"

Connected through hyperedge HE-4 (induced by source paper "structured discrete shape approximation theoretical complexity and practical algorithm"):
  with members:
    - "minimum link paths revisited"

Connected through hyperedge HE-5 (induced by source paper "the complexity of drawing a graph in a polygonal region"):
  with members:
    - "the art gallery problem is exists mathbb r complete"
    - "forall exists mathbb r completeness and area universality"
    - "irrational guards are sometimes needed"
    - "the galois complexity of graph drawing why numerical solutions are ubiquitous for force directed spectral and circle packing drawings"
    - "drawing partially embedded and simultaneously planar graphs"
    - "intersection graphs of segments and exists mathbb r"
    - "drawing graphs in the plane with a prescribed outer face and polynomial area"

Connected through hyperedge HE-6 (induced by source paper "rectilinear link diameter and radius in a rectilinear polygonal domain"):
  with members:
    - "on the geodesic centers of polygonal domains"
    - "an optimal algorithm for minimum link rectilinear paths in triangulated rectilinear domains"
    - "powers of tensors and fast matrix multiplication"
    - "minimum link paths revisited"
    - "the geodesic diameter of polygonal domains"

Connected through hyperedge HE-7 (induced by source paper "an optimal algorithm for minimum link rectilinear paths in triangulated rectilinear domains"):
  with members:
    - "two point l_1 shortest path queries in the plane"
    - "minimum link paths revisited"

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)