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: "mandated data archiving greatly improves access to research data"
  Abstract: The data underlying scientific papers should be accessible to researchers both now and in the future, but how best can we ensure that these data are available? Here we examine the effectiveness of four approaches to data archiving: no stated archiving policy, recommending (but not requiring) archiving, and two versions of mandating data deposition at acceptance. We control for differences between data types by trying to obtain data from papers that use a single, widespread population genetic analysis, structure. At one extreme, we found that mandated data archiving policies that require the inclusion of a data availability statement in the manuscript improve the odds of finding the data online almost 1000-fold compared to having no policy. However, archiving rates at journals with less stringent policies were only very slightly higher than those with no policy at all. We also assessed the effectiveness of asking for data directly from authors and obtained over half of the requested datasets, albeit with ∼...

Connected through hyperedge HE-1 (induced by source paper "the citation advantage of linking publications to research data"):
  with members:
    - "which type of citation analysis generates the most accurate taxonomy of scientific and technical knowledge"
    - "distortive effects of initial based name disambiguation on measurements of large scale coauthorship networks"
    - "the discretised lognormal and hooked power law distributions for complete citation data best options for modelling and regression"
    - "regression for citation data an evaluation of different methods"
    - "efficient estimation of word representations in vector space"
    - "linking to data effect on citation rates in astronomy"
    - "the numpy array a structure for efficient numerical computation"
    - "self selected or mandated open access increases citation impact for higher quality research"

Connected through hyperedge HE-2 (induced by source paper "enforcing public data archiving policies in academic publishing a study of ecology journals"):
  with members:
    - "journal of open source software joss design and first year review"
    - "best practices for scientific computing"
    - "the availability of research data declines rapidly with article age"

Connected through hyperedge HE-3 (induced by source paper "connecting web based mapping services with scientific data repositories collaborative curation and retrieval of simulation data via a geospatial interface"):
  with members:
    - "integrating research data management into geographical information systems"
    - "pyrdm a python based library for automating the management and online publication of scientific software and data"

Connected through hyperedge HE-4 (induced by source paper "integrating research data management into geographical information systems"):
  with members:
    - "shoreline and bathymetry approximation in mesh generation for tidal renewable simulations"
    - "pyrdm a python based library for automating the management and online publication of scientific software and data"

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.DL(Digital Libraries)