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: "a new approximation technique for resource allocation problems"
  Abstract: We develop a rounding method based on random walks in polytopes, which leads to improved approximation algorithms and integrality gaps for several assignment problems that arise in resource allocation and scheduling. In particular, it generalizes the work of Shmoys and Tardos on the generalized assignment problem to the setting where some jobs can be dropped. New concentration bounds for random bipartite matching are developed as well.

Connected through hyperedge HE-1 (induced by source paper "restricted max min allocation approximation and integrality gap"):
  with members:
    - "integrality gap of the configuration lp for the restricted max min fair allocation"
    - "a tale of santa claus hypergraphs and matroids"
    - "restricted max min fair allocation"
    - "combinatorial algorithm for restricted max min fair allocation"
    - "quasi polynomial local search for restricted max min fair allocation"
    - "new constructive aspects of the lovasz local lemma"
    - "on allocating goods to maximize fairness"

Connected through hyperedge HE-2 (induced by source paper "a constant factor approximation for capacitated min max tree cover"):
  with members:
    - "a ptas for bounded capacity vehicle routing in planar graphs"
    - "a ptas for minimum makespan vehicle routing in trees"
    - "iterative partial rounding for vertex cover with hard capacities"
    - "tight algorithms for vertex cover with hard capacities on multigraphs and hypergraphs"
    - "an approximation algorithm for uniform capacitated k median problem with 1 epsilon capacity violation"

Connected through hyperedge HE-3 (induced by source paper "integrality gap of the configuration lp for the restricted max min fair allocation"):
  with members:
    - "restricted max min fair allocation"
    - "on 1 epsilon restricted max min fair allocation problem"
    - "santa claus schedules jobs on unrelated machines"

Connected through hyperedge HE-4 (induced by source paper "restricted max min fair allocation"):
  with members:
    - "on 1 epsilon restricted max min fair allocation problem"
    - "new constructive aspects of the lovasz local lemma"
    - "on allocating goods to maximize fairness"

Connected through hyperedge HE-5 (induced by source paper "the heterogeneous capacitated k center problem"):
  with members:
    - "the non uniform k center problem"
    - "constant approximation for capacitated k median with 1 epsilon capacity violation"
    - "on uniform capacitated k median beyond the natural lp relaxation"
    - "lp based algorithms for capacitated facility location"
    - "approximating capacitated k median with 1 epsilon k open facilities"
    - "lp rounding for k centers with non uniform hard capacities"
    - "quasi polynomial local search for restricted max min fair allocation"
    - "approximability of capacitated network design"

Connected through hyperedge HE-6 (induced by source paper "combinatorial algorithm for restricted max min fair allocation"):
  with members:
    - "finding perfect matchings in bipartite hypergraphs"
    - "quasi polynomial local search for restricted max min fair allocation"
    - "santa claus schedules jobs on unrelated machines"
    - "new constructive aspects of the lovasz local lemma"
    - "on allocating goods to maximize fairness"

Connected through hyperedge HE-7 (induced by source paper "adcell ad allocation in cellular networks"):
  with members:
    - "online stochastic matching online actions based on offline statistics"
    - "online stochastic matching beating 1 1 e"

Connected through hyperedge HE-8 (induced by source paper "new constructive aspects of the lovasz local lemma"):
  with members:
    - "a constructive proof of the general lovasz local lemma"
    - "on allocating goods to maximize fairness"
    - "solving max r sat above a tight lower bound"
    - "derandomizing the lovasz local lemma more effectively"
    - "a constructive proof of the lovasz local lemma"

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)