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: "graph profiling for vertex cover targeted reductions in a branch and reduce solver"
  Abstract: Akiba and Iwata [TCS, 2016] demonstrated that a branch and reduce (BR (b) print statistics such as time taken and number of vertices reduced by each reduction. Based on extensive experiments with benchmark and random instances we demonstrate that (i) more reductions do not necessarily lead to better runtimes; (ii) the subset of reductions leading to the best (or nearly the best) runtime can be predicted based on measurable characteristics of a graph, e.g., density and degree distribution; and (iii) exceptions have structural characteristics known in advance. Our primary contributions are 1. A thorough examination reduction routine performance in the context of graph characteristics. 2. Three primary hypotheses suggesting simple suites of reductions as the most efficient options. 3. Experiments with a large corpus of data to validate our hypotheses. 4. Measures that quantify a problem instance on two key dimensions to make our hypotheses concrete. 5. An enhanced open-source version of the Akiba-Iwata solver that enables our investigations and creates opportunities for future exploration. Our main objective is to provide guidance to a user so that, faced with a given problem instance or set of instances, they may most effectively use the available reductions. Ultimately these efforts can lead to an automated process.

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)