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: "functorial data migration"
  Abstract: In this paper we present a simple database definition language: that of categories and functors. A database schema is a small category and an instance is a set-valued functor on it. We show that morphisms of schemas induce three "data migration functors", which translate instances from one schema to the other in canonical ways. These functors parameterize projections, unions, and joins over all tables simultaneously and can be used in place of conjunctive and disjunctive queries. We also show how to connect a database and a functional programming language by introducing a functorial connection between the schema and the category of types for that language. We begin the paper with a multitude of examples to motivate the definitions, and near the end we provide a dictionary whereby one can translate database concepts into category-theoretic concepts and vice-versa.

Connected through hyperedge HE-1 (induced by source paper "compositional deep learning"):
  with members:
    - "characterizing the invariances of learning algorithms using category theory"
    - "augmented cyclegan learning many to many mappings from unpaired data"
    - "towards functorial language games"
    - "a style based generator architecture for generative adversarial networks"
    - "translating and evolving towards a model of language change in discocat"
    - "morphisms of open games"
    - "unpaired image to image translation using cycle consistent adversarial networks"
    - "improved training of wasserstein gans"

Connected through hyperedge HE-2 (induced by source paper "categorical data integration for computational science"):
  with members:
    - "algebraic data integration"
    - "ologs a categorical framework for knowledge representation"

Connected through hyperedge HE-3 (induced by source paper "the fole table"):
  with members:
    - "the era of fole superstructure"
    - "the era of fole foundation"
    - "the first order logical environment"
    - "ologs a categorical framework for knowledge representation"

Connected through hyperedge HE-4 (induced by source paper "functorial data migration from theory to practice"):
  with members:
    - "relational foundations for functorial data migration"

Connected through hyperedge HE-5 (induced by source paper "qinl query integrated languages"):
  with members:
    - "relational foundations for functorial data migration"

Connected through hyperedge HE-6 (induced by source paper "ologs a categorical framework for knowledge representation"):
  with members:
    - "system consequence"
    - "the iff foundation for ontological knowledge organization"
    - "semantic integration in the information flow framework"
    - "higher dimensional models of networks"

Connected through hyperedge HE-7 (induced by source paper "kleisli database instances"):
  with members:
    - "data base mappings and monads co induction"

Connected through hyperedge HE-8 (induced by source paper "relational foundations for functorial data migration"):
  with members:
    - "kleisli database instances"

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.DB(Databases)