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: "conservative constraint satisfaction re revisited"
  Abstract: Conservative constraint satisfaction problems (CSPs) constitute an important particular case of the general CSP, in which the allowed values of each variable can be restricted in an arbitrary way. Problems of this type are well studied for graph homomorphisms. A dichotomy theorem characterizing conservative CSPs solvable in polynomial time and proving that the remaining ones are NP-complete was proved by Bulatov in 2003. Its proof, however, is quite long and technical. A shorter proof of this result based on the absorbing subuniverses technique was suggested by Barto in 2011. In this paper we give a short elementary prove of the dichotomy theorem for the conservative CSP.

Connected through hyperedge HE-1 (induced by source paper "toward a dichotomy for approximation of h coloring"):
  with members:
    - "interval like graphs and digraphs"
    - "binarisation for valued constraint satisfaction problems"
    - "towards a characterization of constant factor approximable finite valued csps"
    - "bi arc digraphs and conservative polymorphisms"
    - "the complexity of general valued csps"
    - "local distribution and the symmetry gap approximability of multiway partitioning problems"
    - "computational complexity of the minimum cost homomorphism problem on three element domains"
    - "the dichotomy of list homomorphisms for digraphs"

Connected through hyperedge HE-2 (induced by source paper "hardness of network satisfaction for relation algebras with normal representations"):
  with members:
    - "finite relation algebras with normal representations"
    - "a dichotomy theorem for nonuniform csps"
    - "constraint satisfaction problems for reducts of homogeneous graphs"
    - "equations in oligomorphic clones and the constraint satisfaction problem for omega categorical structures"
    - "absorbing subalgebras cyclic terms and the constraint satisfaction problem"

Connected through hyperedge HE-3 (induced by source paper "algorithmically efficient syntactic characterization of possibility domains"):
  with members:
    - "impossibility theorems and the universal algebraic toolkit"

Connected through hyperedge HE-4 (induced by source paper "a dichotomy theorem for nonuniform csps"):
  with members:
    - "constraint satisfaction problems over semilattice block mal tsev algebras"
    - "weaker consistency notions for all the csps of bounded width"
    - "asking the metaquestions in constraint tractability"
    - "graphs of finite algebras edges and connectivity"
    - "absorbing subalgebras cyclic terms and the constraint satisfaction problem"
    - "a characterisation of first order constraint satisfaction problems"

Connected through hyperedge HE-5 (induced by source paper "promise constraint satisfaction algebraic structure and a symmetric boolean dichotomy"):
  with members:
    - "dichotomy for digraph homomorphism problems two algorithms"
    - "combinatorial optimization algorithms via polymorphisms"
    - "a finer reduction of constraint problems to digraphs"
    - "the complexity of general valued csps"

Connected through hyperedge HE-6 (induced by source paper "constraint satisfaction problems over semilattice block mal tsev algebras"):
  with members:
    - "graphs of finite algebras edges and connectivity"

Connected through hyperedge HE-7 (induced by source paper "the dichotomy for conservative constraint satisfaction is polynomially decidable"):
  with members:
    - "asking the metaquestions in constraint tractability"
    - "generalized majority minority operations are tractable"

Connected through hyperedge HE-8 (induced by source paper "graphs of finite algebras edges and connectivity"):
  with members:
    - "absorbing subalgebras cyclic terms and the constraint satisfaction problem"

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.CC(Computational Complexity)