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: "non negative weighted csps an effective complexity dichotomy"
  Abstract: We prove a complexity dichotomy theorem for all non-negative weighted counting Constraint Satisfaction Problems (CSP). This caps a long series of important results on counting problems including unweighted and weighted graph homomorphisms and the celebrated dichotomy theorem for unweighted #CSP. Our dichotomy theorem gives a succinct criterion for tractability. If a set F of constraint functions satisfies the criterion, then the counting CSP problem defined by F is solvable in polynomial time; if it does not satisfy the criterion, then the problem is #P-hard. We furthermore show that the question of whether F satisfies the criterion is decidable in NP. #R##N#Surprisingly, our tractability criterion is simpler than the previous criteria for the more restricted classes of problems, although when specialized to those cases, they are logically equivalent. Our proof mainly uses Linear Algebra, and represents a departure from Universal Algebra, the dominant methodology in recent years.

Connected through hyperedge HE-1 (induced by source paper "the complexity of approximating conservative counting csps"):
  with members:
    - "the complexity of conservative valued csps"
    - "the expressibility of functions on the boolean domain with applications to counting csps"
    - "the complexity of weighted and unweighted csp"
    - "approximating the partition function of the ferromagnetic potts model"
    - "complexity of counting csp with complex weights"
    - "a maximal tractable class of soft constraints"
    - "approximate counting for complex weighted boolean constraint satisfaction problems"
    - "an effective dichotomy for the counting constraint satisfaction problem"

Connected through hyperedge HE-2 (induced by source paper "dichotomy for holant problems with a function on domain size 3"):
  with members:
    - "approximating the partition function of the ferromagnetic potts model"
    - "normal factor graphs a diagrammatic approach to linear algebra"
    - "complexity of counting csp with complex weights"
    - "partition functions of normal factor graphs"
    - "normal factor graphs and holographic transformations"
    - "from holant to csp and back dichotomy for holant c problems"
    - "graph homomorphisms with complex values a dichotomy theorem"
    - "the complexity of weighted boolean csp"

Connected through hyperedge HE-3 (induced by source paper "inapproximability after uniqueness phase transition in two spin systems"):
  with members:
    - "approximation algorithms for two state anti ferromagnetic spin systems on bounded degree graphs"
    - "correlation decay up to uniqueness in spin systems"
    - "complexity of counting csp with complex weights"
    - "approximate counting via correlation decay in spin systems"
    - "improved inapproximability results for counting independent sets in the hard core model"
    - "computational transition at the uniqueness threshold"
    - "a decidable dichotomy theorem on directed graph homomorphisms with non negative weights"
    - "graph homomorphisms with complex values a dichotomy theorem"

Connected through hyperedge HE-4 (induced by source paper "the complexity of weighted and unweighted csp"):
  with members:
    - "a decidable dichotomy theorem on directed graph homomorphisms with non negative weights"
    - "graph homomorphisms with complex values a dichotomy theorem"
    - "the complexity of weighted boolean csp"
    - "the complexity of weighted boolean csp with mixed signs"
    - "a complexity dichotomy for partition functions with mixed signs"
    - "a complexity dichotomy for hypergraph partition functions"
    - "an approximation trichotomy for boolean csp"

Connected through hyperedge HE-5 (induced by source paper "approximate counting via correlation decay in spin systems"):
  with members:
    - "a polynomial time algorithm for estimating the partition function of the ferromagnetic ising model on a regular matroid"
    - "inapproximability of the tutte polynomial of a planar graph"
    - "approximating the partition function of the ferromagnetic potts model"
    - "approximation algorithms for two state anti ferromagnetic spin systems on bounded degree graphs"
    - "improved inapproximability results for counting independent sets in the hard core model"
    - "a deterministic polynomial time approximation scheme for counting knapsack solutions"
    - "polynomial time approximation schemes for knapsack and related counting problems using branching programs"
    - "computational transition at the uniqueness threshold"

Connected through hyperedge HE-6 (induced by source paper "gadgets and anti gadgets leading to a complexity dichotomy"):
  with members:
    - "dichotomy for real holant c problems"
    - "a complete dichotomy rises from the capture of vanishing signatures"
    - "an effective dichotomy for the counting constraint satisfaction problem"
    - "holographic algorithms with matchgates capture precisely tractable planar csp"
    - "holant problems for regular graphs with complex edge functions"
    - "from holant to csp and back dichotomy for holant c problems"
    - "a decidable dichotomy theorem on directed graph homomorphisms with non negative weights"
    - "graph homomorphisms with complex values a dichotomy theorem"

Connected through hyperedge HE-7 (induced by source paper "complexity of counting csp with complex weights"):
  with members:
    - "the complexity of weighted and unweighted csp"
    - "an effective dichotomy for the counting constraint satisfaction problem"
    - "on tractable exponential sums"
    - "a decidable dichotomy theorem on directed graph homomorphisms with non negative weights"
    - "the complexity of partition functions on hermitian matrices"
    - "graph homomorphisms with complex values a dichotomy theorem"
    - "a complexity dichotomy for partition functions with mixed signs"

Connected through hyperedge HE-8 (induced by source paper "the complexity of weighted counting for acyclic conjunctive queries"):
  with members:
    - "structural tractability of counting of solutions to conjunctive queries"
    - "the complexity of weighted and unweighted csp"
    - "complexity of counting csp with complex weights"
    - "tractable hypergraph properties for constraint satisfaction and conjunctive queries"
    - "the complexity of weighted boolean csp"
    - "hypertree decompositions and tractable queries"

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)