human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "quasiconvex analysis of backtracking algorithms"):
  Abstract: We consider a class of multivariate recurrences frequently arising in the worst case analysis of Davis-Putnam-style exponential time backtracking algorithms for NP-hard problems. We describe a technique for proving asymptotic upper bounds on these recurrences, by using a suitable weight function to reduce the problem to that of solving univariate linear recurrences; show how to use quasiconvex programming to determine the weight function yielding the smallest upper bound; and prove that the resulting upper bounds are within a polynomial factor of the true asymptotics of the recurrence. We develop and implement a multiple-gradient descent algorithm for the resulting quasiconvex programs, using a real-number arithmetic package for guaranteed accuracy of the computed worst case time bounds.

Includes members:
  Member "the traveling salesman problem for cubic graphs":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "an exact algorithm for tsp in degree 3 graphs via circuit procedure and amortization on connectivity structure")
  Member "confluent drawings visualizing non planar diagrams in a planar way":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on strict outer confluent graphs")
  Member "optimized color gamuts for tiled displays":
    also connected through other hyperedges:
      (none)
  Member "improved algorithms for 3 coloring 3 edge coloring and constraint satisfaction":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "worst case upper bound for 1 2 qsat")
  Member "small maximal independent sets and faster exact graph coloring":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "from independent sets and vertex colorings to isotropic spaces and isotropic decompositions")
  Member "optimal point placement for mesh smoothing":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "consensus maximization tree search revisited")

Question: Please tell me which class the source paper 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)