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 "prevalence and citation advantage of gold open access in the subject areas of the scopus database"):
  Abstract: The potential benefit of open access (OA) in relation to citation impact has been discussed in the literature in depth. The methodology used to test the OA citation advantage includes comparing OA vs. non-OA journal impact factors and citations of OA versus non-OA articles published in the same non-OA journals. However, one problem with many studies is that they are small -restricted to a discipline or set of journals-. Moreover, conclusions are not entirely consistent among research areas and 'early view' and 'selection bias' have been suggested as possible explications. In the present paper, an analysis of gold OA from across all areas of research -the 27 subject areas of the Scopus database- is realized. As a novel contribution, this paper takes a journal-level approach to assessing the OA citation advantage, whereas many others take a paper-level approach. Data were obtained from Scimago Lab, sorted using Scopus database, and tagged as OA/non-OA using the DOAJ list. Jointly with the OA citation advantage, the OA prevalence as well as the differences between access types (OA vs. non-OA) in production and referencing are tested. A total of 3,737 OA journals (16.8%) and 18,485 non-OA journals (83.2%) published in 2015 are considered. As the main conclusion, there is no generalizable gold OA citation advantage at journal level.

Includes members:
  Member "reconsidering the gold open access citation advantage postulate in a multidisciplinary context an analysis of the subject categories in the web of science database 2009 2014":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "publication modalities article in press and open access in relation to journal average citation")
  Member "the open access advantage considering citation article usage and social media attention":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "publication modalities article in press and open access in relation to journal average citation")
  Member "an approach to the author citation potential measures of scientific performance which are invariant across scientific fields":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "publication modalities article in press and open access in relation to journal average citation")
  Member "comparing journals from different fields of science and social science through a jcr subject categories normalized impact factor":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "publication modalities article in press and open access in relation to journal average citation")
  Member "self selected or mandated open access increases citation impact for higher quality research":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "the citation advantage of linking publications to research data")
  Member "the effect of use and access on citations":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "publication modalities article in press and open access in relation to journal average citation")

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.DL(Digital Libraries)