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: "an optimal algorithm for reconstructing point set order types from radial orderings"
  Abstract: Let P be a set of n labeled points in the plane. The radial system of P describes, for each p ∈ P, the order in which a ray that rotates around p encounters the points in P∖{p}. This notion is related to the order type of P, which describes the orientation (clockwise or counterclockwise) of every ordered triple in P. Given only the order type, the radial system is uniquely determined and can easily be obtained. The converse, however, is not true. Indeed, let R be the radial system of P, and let T(R) be the set of all order types with radial system R (we define T(R) = ∅ for the case that R is not a valid radial system). Aichholzer et al. (Reconstructing Point Set Order Types from Radial Orderings, in Proc. ISAAC 2014) show that T(R) may contain up to n − 1 order types. They also provide polynomial-time algorithms to compute T(R) when only R is given. We describe a new algorithm for finding T(R). The algorithm constructs the convex hulls of all possible point sets with the radial system R. After that, orien...

Connected through hyperedge HE-1 (induced by source paper "subquadratic encodings for point configurations"):
  with members:
    - "geodesic order types"

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)