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: "covering rough sets based on neighborhoods an approach without using neighborhoods"
  Abstract: Rough set theory, a mathematical tool to deal with inexact or uncertain knowledge in information systems, has originally described the indiscernibility of elements by equivalence relations. Covering rough sets are a natural extension of classical rough sets by relaxing the partitions arising from equivalence relations to coverings. Recently, some topological concepts such as neighborhood have been applied to covering rough sets. In this paper, we further investigate the covering rough sets based on neighborhoods by approximation operations. We show that the upper approximation based on neighborhoods can be defined equivalently without using neighborhoods. To analyze the coverings themselves, we introduce unary and composition operations on coverings. A notion of homomorphismis provided to relate two covering approximation spaces. We also examine the properties of approximations preserved by the operations and homomorphisms, respectively.

Connected through hyperedge HE-1 (induced by source paper "incremental approaches to knowledge reduction of covering decision information systems with variations of coverings"):
  with members:
    - "characteristic matrix of covering and its application to boolean matrix decomposition and axiomatization"

Connected through hyperedge HE-2 (induced by source paper "geometric lattice structure of covering and its application to attribute reduction through matroids"):
  with members:
    - "dependence space of matroids and its application to attribute reduction"
    - "geometric lattice structure of covering based rough sets through matroids"

Connected through hyperedge HE-3 (induced by source paper "connectedness of graphs and its application to connected matroids through covering based rough sets"):
  with members:
    - "geometric lattice structure of covering and its application to attribute reduction through matroids"
    - "geometric lattice structure of covering based rough sets through matroids"

Connected through hyperedge HE-4 (induced by source paper "applications of repeat degree on coverings of neighborhoods"):
  with members:
    - "geometric lattice structure of covering based rough sets through matroids"

Connected through hyperedge HE-5 (induced by source paper "generalized fuzzy rough sets based on fuzzy coverings"):
  with members:
    - "homomorphisms between fuzzy information systems revisited"
    - "a note on communicating between information systems based on including degrees"
    - "some improved results on communication between information systems"

Connected through hyperedge HE-6 (induced by source paper "the construction of characteristic matrixes of dynamic coverings using an incremental approach"):
  with members:
    - "characteristic matrix of covering and its application to boolean matrix decomposition and axiomatization"

Connected through hyperedge HE-7 (induced by source paper "the construction of characteristic matrixes of dynamic coverings in the covering information systems"):
  with members:
    - "characteristic matrix of covering and its application to boolean matrix decomposition and axiomatization"

Connected through hyperedge HE-8 (induced by source paper "data compression of dynamic set valued information systems"):
  with members:
    - "some improved results on communication between information systems"

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.AI(Artificial Intelligence)