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: "bichromatic compatible matchings"
  Abstract: For a set $R$ of $n$ red points and a set $B$ of $n$ blue points, a $BR$-matching is a non-crossing geometric perfect matching where each segment has one endpoint in $B$ and one in $R$. Two $BR$-matchings are compatible if their union is also non-crossing. We prove that, for any two distinct $BR$-matchings $M$ and $M'$, there exists a sequence of $BR$-matchings $M = M_1, ..., M_k = M'$ such that $M_{i-1} $ is compatible with $M_i$. This implies the connectivity of the compatible bichromatic matching graph containing one node for each bichromatic matching and an edge joining each pair of compatible matchings, thereby answering the open problem posed by Aichholzer et al. in "Compatible matchings for bichromatic plane straight-line graphs"

Connected through hyperedge HE-1 (induced by source paper "flip distance to some plane configurations"):
  with members:
    - "flip distance to a non crossing perfect matching"
    - "flip distance between triangulations of a simple polygon is np complete"
    - "a history of flips in combinatorial triangulations"

Connected through hyperedge HE-2 (induced by source paper "on maximum sum matchings of points"):
  with members:
    - "stabbing pairwise intersecting disks by five points"
    - "stabbing pairwise intersecting disks by four points"
    - "matching colored points with rectangles"

Connected through hyperedge HE-3 (induced by source paper "matching points with disks with a common intersection"):
  with members:
    - "matching colored points with rectangles"

Connected through hyperedge HE-4 (induced by source paper "flip distance to a non crossing perfect matching"):
  with members:
    - "point sets with many non crossing perfect matchings"
    - "quasi parallel segments and characterization of unique bichromatic matchings"
    - "flip distance between triangulations of a simple polygon is np complete"

Connected through hyperedge HE-5 (induced by source paper "quasi parallel segments and characterization of unique bichromatic matchings"):
  with members:
    - "point sets with many non crossing perfect matchings"
    - "linear transformation distance for bichromatic matchings"

Connected through hyperedge HE-6 (induced by source paper "packing plane perfect matchings into a point set"):
  with members:
    - "packing plane spanning trees and paths in complete geometric graphs"
    - "counting triangulations of planar point sets"

Connected through hyperedge HE-7 (induced by source paper "linear transformation distance for bichromatic matchings"):
  with members:
    - "quasi parallel segments and characterization of unique bichromatic 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)