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: "the complexity of change"
  Abstract: Many combinatorial problems can be formulated as "Can I transform configuration 1 into configuration 2, if certain transformations only are allowed?". An example of such a question is: given two k-colourings of a graph, can I transform the first k-colouring into the second one, by recolouring one vertex at a time, and always maintaining a proper k-colouring? Another example is: given two solutions of a SAT-instance, can I transform the first solution into the second one, by changing the truth value one variable at a time, and always maintaining a solution of the SAT-instance? Other examples can be found in many classical puzzles, such as the 15-Puzzle and Rubik's Cube. #R##N#In this survey we shall give an overview of some older and more recent work on this type of problem. The emphasis will be on the computational complexity of the problems: how hard is it to decide if a certain transformation is possible or not?

Connected through hyperedge HE-1 (induced by source paper "dominating sets reconfiguration under token sliding"):
  with members:
    - "decremental optimization of dominating sets under reachability constraints"
    - "the complexity of independent set reconfiguration on bipartite graphs"
    - "token jumping in minor closed classes"
    - "the complexity of dominating set reconfiguration"
    - "on a conjecture of mohar concerning kempe equivalence of regular graphs"
    - "reconfiguration on sparse graphs"
    - "shortest reconfiguration paths in the solution space of boolean formulas"
    - "reconfiguration of dominating sets"

Connected through hyperedge HE-2 (induced by source paper "independent set reconfiguration parameterized by modular width"):
  with members:
    - "token sliding on split graphs"
    - "the complexity of independent set reconfiguration on bipartite graphs"
    - "token jumping in minor closed classes"
    - "token sliding on chordal graphs"
    - "reconfiguring independent sets in claw free graphs"
    - "fixed parameter tractability of token jumping on planar graphs"
    - "linear time algorithm for sliding tokens on trees"
    - "algorithms parameterized by vertex cover and modular width through potential maximal cliques"

Connected through hyperedge HE-3 (induced by source paper "shortest reconfiguration of perfect matchings via alternating cycles"):
  with members:
    - "the perfect matching reconfiguration problem"
    - "shortest reconfiguration of matchings"
    - "the time complexity of permutation routing via matching token swapping and a variant"
    - "flip distance between triangulations of a simple polygon is np complete"
    - "shortest reconfiguration of sliding tokens on a caterpillar"
    - "flip distance between triangulations of a planar point set is apx hard"
    - "finding shortest paths between graph colourings"
    - "shortest reconfiguration paths in the solution space of boolean formulas"

Connected through hyperedge HE-4 (induced by source paper "on the parameterized complexity of reconfiguration of connected dominating sets"):
  with members:
    - "empirical evaluation of approximation algorithms for generalized graph coloring and uniform quasi wideness"
    - "reconfiguration on nowhere dense graph classes"
    - "polynomial kernels and wideness properties of nowhere dense graph classes"
    - "neighborhood complexity and kernelization for nowhere dense classes of graphs"
    - "reconfiguration of dominating sets"
    - "kernelization using structural parameters on sparse graph classes"
    - "deciding first order properties of nowhere dense graphs"
    - "flip distance between two triangulations of a point set is np complete"

Connected through hyperedge HE-5 (induced by source paper "reconfiguring k path vertex covers"):
  with members:
    - "reoptimization of path vertex cover problem"
    - "token sliding on split graphs"
    - "parameterized algorithm for 3 path vertex cover"
    - "the complexity of independent set reconfiguration on bipartite graphs"
    - "token sliding on chordal graphs"
    - "reconfiguring independent sets in claw free graphs"
    - "linear time algorithm for sliding tokens on trees"
    - "pspace completeness of sliding block puzzles and other problems through the nondeterministic constraint logic model of computation"

Connected through hyperedge HE-6 (induced by source paper "token swapping on trees"):
  with members:
    - "swapping colored tokens on graphs"
    - "the time complexity of permutation routing via matching token swapping and a variant"
    - "the time complexity of the token swapping problem and its parallel variants"
    - "approximation and hardness for token swapping"
    - "pebble games proof complexity and time space trade offs"
    - "an efficient algorithm for the diameter of cayley graphs generated by transposition trees"
    - "pancake flipping is hard"
    - "playing games with algorithms algorithmic combinatorial game theory"

Connected through hyperedge HE-7 (induced by source paper "the perfect matching reconfiguration problem"):
  with members:
    - "on counting perfect matchings in general graphs"
    - "counting perfect matchings and the switch chain"
    - "token jumping in minor closed classes"
    - "parameterized complexity of graph constraint logic"
    - "reconfiguring independent sets in cographs"
    - "flip distance between two triangulations of a point set is np complete"
    - "pspace completeness of sliding block puzzles and other problems through the nondeterministic constraint logic model of computation"

Connected through hyperedge HE-8 (induced by source paper "distributed recoloring"):
  with members:
    - "an exponential separation between randomized and deterministic complexity in the local model"
    - "kempe equivalence of colourings of cubic graphs"
    - "on a conjecture of mohar concerning kempe equivalence of regular graphs"
    - "a reconfigurations analogue of brooks theorem and its consequences"
    - "recoloring graphs via tree decompositions"

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.DM(Discrete Mathematics)