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 primal dual parallel approximation technique applied to weighted set and vertex covers"
  Abstract: We give an efficient deterministic parallel approximation algorithm for the minimum-weight vertex- and set-cover problems and their duals (edge/element packing). The algorithm is simple and suitable for distributed implementation. It fits no existing paradigm for fast, efficient parallel algorithms-it uses only "local" information at each step, yet is deterministic. (Generally, such algorithms have required randomization.) The result demonstrates that linear-programming primal-dual approximation techniques can lead to fast, efficient parallel algorithms. The presentation does not assume knowledge of such techniques.

Connected through hyperedge HE-1 (induced by source paper "smaller cuts higher lower bounds"):
  with members:
    - "a faster deterministic distributed algorithm for weighted apsp through pipelining"
    - "a deterministic distributed algorithm for exact weighted all pairs shortest paths in tilde o n 3 2 rounds"
    - "distributed exact weighted all pairs shortest paths in near linear time"
    - "optimal distributed coloring algorithms for planar graphs in the local model"
    - "distributed exact shortest paths in sublinear time"
    - "a time hierarchy theorem for the local model"
    - "a 2 ϵ approximation for maximum weight matching in the semi streaming model"
    - "quadratic and near quadratic lower bounds for the congest model"

Connected through hyperedge HE-2 (induced by source paper "optimal distributed covering algorithms"):
  with members:
    - "distributed approximation of maximum independent set and maximum matching"
    - "distributed degree splitting edge coloring and orientations"
    - "an exponential separation between randomized and deterministic complexity in the local model"
    - "an improved distributed algorithm for maximal independent set"
    - "local computation lower and upper bounds"
    - "a simple local 3 approximation algorithm for vertex cover"

Connected through hyperedge HE-3 (induced by source paper "a deterministic distributed 2 approximation for weighted vertex cover in o log n log delta log 2 log delta rounds"):
  with members:
    - "the locality of distributed symmetry breaking"
    - "local computation lower and upper bounds"
    - "a simple local 3 approximation algorithm for vertex cover"

Connected through hyperedge HE-4 (induced by source paper "quadratic and near quadratic lower bounds for the congest model"):
  with members:
    - "distributed exact shortest paths in sublinear time"
    - "a time hierarchy theorem for the local model"
    - "distributed approximation of maximum independent set and maximum matching"
    - "near linear lower bounds for distributed distance computations even in sparse networks"
    - "an exponential separation between randomized and deterministic complexity in the local model"
    - "distributed construction of purely additive spanners"
    - "algebraic methods in the congested clique"
    - "threesomes degenerates and love triangles"

Connected through hyperedge HE-5 (induced by source paper "deterministic fully dynamic approximate vertex cover and fractional matching in o 1 amortized update time"):
  with members:
    - "fully dynamic maximal matching in constant update time"
    - "new deterministic approximation algorithms for fully dynamic matching"
    - "online and dynamic algorithms for set cover"
    - "design of dynamic algorithms via primal dual method"
    - "unifying and strengthening hardness for dynamic problems via the online matrix vector multiplication conjecture"
    - "popular conjectures imply strong lower bounds for dynamic problems"
    - "deterministic fully dynamic data structures for vertex cover and matching"
    - "fully dynamic 1 epsilon approximate matchings"

Connected through hyperedge HE-6 (induced by source paper "a distributed 2 epsilon approximation for vertex cover in o log delta epsilon log log delta rounds"):
  with members:
    - "the locality of distributed symmetry breaking"
    - "local computation lower and upper bounds"
    - "a simple local 3 approximation algorithm for vertex cover"

Connected through hyperedge HE-7 (induced by source paper "locally optimal load balancing"):
  with members:
    - "tight bounds for randomized load balancing on arbitrary network topologies"
    - "almost stable matchings by truncating the gale shapley algorithm"
    - "balanced allocation on graphs"

Connected through hyperedge HE-8 (induced by source paper "distributed and parallel algorithms for set cover problems with small neighborhood covers"):
  with members:
    - "on column restricted and priority covering integer programs"
    - "a new multilayered pcp and the hardness of hypergraph vertex cover"

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)