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: "efficient computation of representative sets with applications in parameterized and exact algorithms"
  Abstract: We give two algorithms computing representative families of linear and uniform matroids and demonstrate how to use representative families for designing single-exponential parameterized and exact exponential time algorithms. The applications of our approach include #R##N#- LONGEST DIRECTED CYCLE #R##N#- MINIMUM EQUIVALENT GRAPH (MEG) #R##N#- Algorithms on graphs of bounded treewidth #R##N#-k-PATH, k-TREE, and more generally, k-SUBGRAPH ISOMORPHISM, where the k-vertex pattern graph is of constant treewidth.

Connected through hyperedge HE-1 (induced by source paper "extensor coding"):
  with members:
    - "homomorphisms are a good basis for counting small subgraphs"
    - "a dichotomy theorem for nonuniform csps"
    - "the proof of csp dichotomy conjecture"
    - "clifford algebras meet tree decompositions"
    - "complexity of counting subgraphs only the boundedness of the vertex cover number counts"
    - "mixing color coding related techniques"
    - "narrow sieves for parameterized paths and packings"
    - "determinant sums for undirected hamiltonicity"

Connected through hyperedge HE-2 (induced by source paper "faster deterministic parameterized algorithm for k path"):
  with members:
    - "finding detours is fixed parameter tractable"
    - "parameterized approximation algorithms for packing problems"
    - "representative families a unified tradeoff based approach"
    - "mixing color coding related techniques"
    - "narrow sieves for parameterized paths and packings"

Connected through hyperedge HE-3 (induced by source paper "exact learning from an honest teacher that answers membership queries"):
  with members:
    - "exact learning of juntas from membership queries"
    - "almost optimal cover free families"
    - "progress on polynomial identity testing ii"
    - "linear time constructions of some d restriction problems"
    - "on exact learning monotone dnf from membership queries"
    - "learning boolean halfspaces with small weights from membership queries"
    - "bounds on the rate of disjunctive codes"
    - "analytical approach to parallel repetition"

Connected through hyperedge HE-4 (induced by source paper "algebraic methods in the congested clique"):
  with members:
    - "approximation of distances and shortest paths in the broadcast congest clique"
    - "minimum weight spanning tree construction in o log log log n rounds on the congested clique"
    - "powers of tensors and fast matrix multiplication"
    - "distributed approximation algorithms for weighted shortest paths"
    - "lessons from the congested clique applied to mapreduce"
    - "near constant time distributed algorithms on a congested clique"
    - "faster all pairs shortest paths via circuit complexity"
    - "counting thin subgraphs via packings faster than meet in the middle time"

Connected through hyperedge HE-5 (induced by source paper "polynomial fixed parameter algorithms a case study for longest path on interval graphs"):
  with members:
    - "the power of data reduction for matching"
    - "fully polynomial time parameterized computations for graphs and matrices of low treewidth"
    - "approximation and fixed parameter subquadratic algorithms for radius and diameter"
    - "why walking the dog takes time frechet distance has no strongly subquadratic algorithms unless seth fails"
    - "popular conjectures imply strong lower bounds for dynamic problems"
    - "a nearly mlogn time solver for sdd linear systems"
    - "a simple polynomial algorithm for the longest path problem on cocomparability graphs"
    - "narrow sieves for parameterized paths and packings"

Connected through hyperedge HE-6 (induced by source paper "parameterized approximation algorithms for packing problems"):
  with members:
    - "representative sets of product families"
    - "representative families a unified tradeoff based approach"
    - "mixing color coding related techniques"
    - "improved approximation for 3 dimensional matching via bounded pathwidth local search"
    - "narrow sieves for parameterized paths and packings"
    - "determinant sums for undirected hamiltonicity"

Connected through hyperedge HE-7 (induced by source paper "finding two edge disjoint paths with length constraints"):
  with members:
    - "representative sets of product families"
    - "representative families a unified tradeoff based approach"
    - "mixing color coding related techniques"
    - "kernelization lower bounds by cross composition"

Connected through hyperedge HE-8 (induced by source paper "a randomized algorithm for long directed cycle"):
  with members:
    - "representative sets of product families"
    - "representative families a unified tradeoff based approach"
    - "mixing color coding related techniques"

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.DS(Data Structures and Algorithms)