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 "compact provably good lps for orienteering and regret bounded vehicle routing"):
  Abstract: We develop polynomial-size LP-relaxations for {\em orienteering} and the {\em regret-bounded vehicle routing problem} (\rvrp) and devise suitable LP-rounding algorithms that lead to various new insights and approximation results for these problems. In orienteering, the goal is to find a maximum-reward $r$-rooted path, possibly ending at a specified node, of length at most some given budget $B$. In \rvrp, the goal is to find the minimum number of $r$-rooted paths of {\em regret} at most a given bound $R$ that cover all nodes, where the regret of an $r$-$v$ path is its length $-$ $c_{rv}$. #R##N#For {\em rooted orienteering}, we introduce a natural bidirected LP-relaxation and obtain a simple $3$-approximation algorithm via LP-rounding. This is the {\em first LP-based} guarantee for this problem. We also show that {\em point-to-point} (\ptp) {\em orienteering} can be reduced to a regret-version of rooted orienteering at the expense of a factor-2 loss in approximation. For \rvrp, we propose two compact LPs that lead to significant improvements, in both approximation ratio and running time, over the approach in~\cite{FriggstadS14}. One of these is a natural modification of the LP for rooted orienteering; the other is an unconventional formulation that is motivated by certain structural properties of an \rvrp-solution, which leads to a $15$-approximation algorithm for \rvrp.

Includes members:
  Member "an improved integrality gap for asymmetric tsp paths":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a constant factor approximation for directed latency in quasi polynomial time")
  Member "approximation algorithms for regret bounded vehicle routing and applications to distance constrained vehicle routing":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "a constant factor approximation for directed latency in quasi polynomial time")
  Member "facility location with client latencies linear programming based techniques for minimum latency problems":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "linear programming based approximation algorithms for multi vehicle minimum latency problems")

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)