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: "random discrete morse theory and a new library of triangulations"
  Abstract: 1) We introduce random discrete Morse theory as a computational scheme to measure the complicatedness of a triangulation. The idea is to try to quantify the frequence of discrete Morse matchings with a certain number of critical cells. Our measure will depend on the topology of the space, but also on how nicely the space is triangulated. #R##N#(2) The scheme we propose looks for optimal discrete Morse functions with an elementary random heuristic. Despite its na\"ivet\'e, this approach turns out to be very successful even in the case of huge inputs. #R##N#(3) In our view the existing libraries of examples in computational topology are `too easy' for testing algorithms based on discrete Morse theory. We propose a new library containing more complicated (and thus more meaningful) test examples.

Connected through hyperedge HE-1 (induced by source paper "computing discrete morse complexes from simplicial complexes"):
  with members:
    - "the stellar tree a compact representation for simplicial complexes and beyond"
    - "building efficient and compact data structures for simplicial complexes"
    - "the simplex tree an efficient data structure for general simplicial complexes"
    - "reducing complexes in multidimensional persistent homology theory"
    - "the compressed annotation matrix an efficient data structure for computing persistent cohomology"
    - "graph induced complex on point data"
    - "distributed computation of persistent homology"

Connected through hyperedge HE-2 (induced by source paper "collapsibility to a subcomplex of a given dimension is np complete"):
  with members:
    - "parameterized complexity of discrete morse theory"
    - "recognition of collapsible complexes is np complete"

Connected through hyperedge HE-3 (induced by source paper "parameterized complexity of discrete morse theory"):
  with members:
    - "completely inapproximable monotone and antimonotone parameterized problems"
    - "recognition of collapsible complexes is np complete"

Connected through hyperedge HE-4 (induced by source paper "min morse approximability applications"):
  with members:
    - "parameterized complexity of discrete morse theory"
    - "nearly maximum flows in nearly linear time"
    - "optimal topological simplification of discrete functions on surfaces"
    - "computing topological persistence for simplicial maps"
    - "randomized rounding without solving the linear program"

Connected through hyperedge HE-5 (induced by source paper "recognition of collapsible complexes is np complete"):
  with members:
    - "geometry driven collapses for converting a cech complex into a triangulation of a nicely triangulable shape"

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)