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: "comparing journals from different fields of science and social science through a jcr subject categories normalized impact factor"
  Abstract: The journal Impact Factor (IF) is not comparable among fields of science and social science because of systematic differences in publication and citation behaviour across disciplines. In this work, a decomposing of the field aggregate impact factor into five normally distributed variables is presented. Considering these factors, a principal component analysis is employed to find the sources of the variance in the Journal Citation Reports (JCR) subject categories of science and social science. Although publication and citation behaviour differs largely across disciplines, principal components explain more than 78 % of the total variance and the average number of references per paper is not the primary factor explaining the variance in impact factors across categories. The categories normalized impact factor based on the JCR subject category list is proposed and compared with the IF. This normalization is achieved by considering all the indexing categories of each journal. An empirical application, with one hundred journals in two or more subject categories of economics and business, shows that the gap between rankings is reduced around 32 % in the journals analyzed. This gap is obtained as the maximum distance among the ranking percentiles from all categories where each journal is included.

Connected through hyperedge HE-1 (induced by source paper "publication modalities article in press and open access in relation to journal average citation"):
  with members:
    - "prevalence and citation advantage of gold open access in the subject areas of the scopus database"
    - "influencia de la fecha de publicacion online de los articulos cientificos en los indicadores bibliometricos"
    - "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"
    - "the open access advantage considering citation article usage and social media attention"
    - "an approach to the author citation potential measures of scientific performance which are invariant across scientific fields"
    - "self selected or mandated open access increases citation impact for higher quality research"
    - "the effect of use and access on citations"

Connected through hyperedge HE-2 (induced by source paper "the citation advantage of foreign language references for chinese social science papers"):
  with members:
    - "are the discretised lognormal and hooked power law distributions plausible for citation data"
    - "regression for citation data an evaluation of different methods"
    - "how to improve the prediction based on citation impact percentiles for years shortly after the publication date"
    - "self selected or mandated open access increases citation impact for higher quality research"

Connected through hyperedge HE-3 (induced by source paper "reviewing indicating and counting books for modern research evaluation systems"):
  with members:
    - "filling the citation gap measuring the multidimensional impact of the academic book at institutional level with plumx"
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
    - "the role of handbooks in knowledge creation and diffusion a case of science and technology studies"
    - "mapping citation patterns of book chapters in the book citation index"
    - "towards a book publishers citation reports first approach using the book citation index"
    - "measuring contextual citation impact of scientific journals"

Connected through hyperedge HE-4 (induced by source paper "prevalence and citation advantage of gold open access in the subject areas of the scopus database"):
  with members:
    - "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"
    - "the open access advantage considering citation article usage and social media attention"
    - "an approach to the author citation potential measures of scientific performance which are invariant across scientific fields"
    - "self selected or mandated open access increases citation impact for higher quality research"
    - "the effect of use and access on citations"

Connected through hyperedge HE-5 (induced by source paper "an approach to the author citation potential measures of scientific performance which are invariant across scientific fields"):
  with members:
    - "journal topic citation potential and between field comparisons the topic normalized impact factor"
    - "impact maturity times and citation time windows the 2 year maximum journal impact factor"
    - "alternatives to the journal impact factor i3 and the top 10 or top 25 of the most highly cited papers"
    - "source normalized indicators of citation impact an overview of different approaches and an empirical comparison"
    - "central indexes to the citation distribution a complement to the h index"
    - "caveats for the journal and field normalizations in the cwts leiden evaluations of research performance"
    - "indicators of the interdisciplinarity of journals diversity centrality and citations"
    - "rivals for the crown reply to opthof and leydesdorff"

Connected through hyperedge HE-6 (induced by source paper "journal topic citation potential and between field comparisons the topic normalized impact factor"):
  with members:
    - "impact maturity times and citation time windows the 2 year maximum journal impact factor"
    - "alternatives to the journal impact factor i3 and the top 10 or top 25 of the most highly cited papers"
    - "source normalized indicators of citation impact an overview of different approaches and an empirical comparison"
    - "central indexes to the citation distribution a complement to the h index"
    - "indicators of the interdisciplinarity of journals diversity centrality and citations"
    - "rivals for the crown reply to opthof and leydesdorff"
    - "measuring contextual citation impact of scientific journals"
    - "can scientific journals be classified in terms of aggregated journal journal citation relations using the journal citation reports"

Connected through hyperedge HE-7 (induced by source paper "research status and trends in operations research and management science or ms journals a bibliometric analysis based on the web of science database 2001 2012"):
  with members:
    - "journal topic citation potential and between field comparisons the topic normalized impact factor"
    - "impact maturity times and citation time windows the 2 year maximum journal impact factor"
    - "source normalized indicators of citation impact an overview of different approaches and an empirical comparison"
    - "central indexes to the citation distribution a complement to the h index"
    - "measuring contextual citation impact of scientific journals"
    - "the sjr indicator a new indicator of journals scientific prestige"

Connected through hyperedge HE-8 (induced by source paper "impact maturity times and citation time windows the 2 year maximum journal impact factor"):
  with members:
    - "alternatives to the journal impact factor i3 and the top 10 or top 25 of the most highly cited papers"
    - "source normalized indicators of citation impact an overview of different approaches and an empirical comparison"
    - "central indexes to the citation distribution a complement to the h index"
    - "indicators of the interdisciplinarity of journals diversity centrality and citations"
    - "rivals for the crown reply to opthof and leydesdorff"
    - "measuring contextual citation impact of scientific journals"
    - "can scientific journals be classified in terms of aggregated journal journal citation relations using the journal citation reports"
    - "the sjr indicator a new indicator of journals scientific prestige"

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)