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: "referenced publication years spectroscopy applied to imetrics scientometrics journal of informetrics and a relevant subset of jasist"
  Abstract: We have developed a (freeware) routine for "referenced publication years spectroscopy" (RPYS) and apply this method to the historiography of "iMetrics," that is, the junction of the journals Scientometrics, Informetrics, and the relevant subset of JASIST (approx. 20%) that shapes the intellectual space for the development of information metrics (bibliometrics, scientometrics, informetrics, and webometrics). The application to information metrics (our own field of research) provides us with the opportunity to validate this methodology, and to add a reflection about using citations for the historical reconstruction. The results show that the field is rooted in individual contributions of the 1920s-1950s (e.g., Alfred J. Lotka), and was then shaped intellectually in the early 1960s by a confluence of the history of science (Derek de Solla Price), documentation (e.g., Michael M. Kessler's "bibliographic coupling"), and "citation indexing" (Eugene Garfield). Institutional development at the interfaces between science studies and information science has been reinforced by the new journal Informetrics since 2007. In a concluding reflection, we return to the question of how the historiography of science using algorithmic means--in terms of citation practices--can be different from an intellectual history of the field based, for example, on reading source materials.

Connected through hyperedge HE-1 (induced by source paper "how to identify the roots of broad research topics and fields the introduction of rpys sampling using the example of climate change research"):
  with members:
    - "climate change research in view of bibliometrics"
    - "introducing citedreferencesexplorer crexplorer a program for reference publication year spectroscopy with cited references standardization"
    - "growth rates of modern science a bibliometric analysis based on the number of publications and cited references"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"

Connected through hyperedge HE-2 (induced by source paper "identifying single influential publications in a research field new analysis opportunities of the crexplorer"):
  with members:
    - "climate change research in view of bibliometrics"
    - "smart girls versus sleeping beauties in the sciences the identification of instant and delayed recognition by using the citation angle"
    - "introducing citedreferencesexplorer crexplorer a program for reference publication year spectroscopy with cited references standardization"
    - "new features of citedreferencesexplorer crexplorer"
    - "citation score normalized by cited references csncr the introduction of a new citation impact indicator"
    - "detecting the historical roots of tribology research a bibliometric analysis"
    - "a review of the literature on citation impact indicators"
    - "growth rates of modern science a bibliometric analysis based on the number of publications and cited references"

Connected through hyperedge HE-3 (induced by source paper "patent citation spectroscopy pcs algorithmic retrieval of landmark patents"):
  with members:
    - "strategic intelligence on emerging technologies scientometric overlay mapping"
    - "citation algorithms for identifying research milestones driving biomedical innovation"
    - "citations indicators of quality the impact fallacy"
    - "detecting the historical roots of tribology research a bibliometric analysis"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"

Connected through hyperedge HE-4 (induced by source paper "citations indicators of quality the impact fallacy"):
  with members:
    - "introducing citedreferencesexplorer crexplorer a program for reference publication year spectroscopy with cited references standardization"
    - "identification of long term concept symbols among citations can documents be clustered in terms of common intellectual histories"
    - "interpreting altmetrics viewing acts on social media through the lens of citation and social theories"
    - "quantifying the cognitive extent of science"
    - "the operationalization of fields as wos subject categories wcs in evaluative bibliometrics the cases of library and information science and science technology studies"
    - "the role of handbooks in knowledge creation and diffusion a case of science and technology studies"
    - "citnetexplorer a new software tool for analyzing and visualizing citation networks"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"

Connected through hyperedge HE-5 (induced by source paper "rpys i o a web based tool for the historiography and visualization of citation classics sleeping beauties and research fronts"):
  with members:
    - "introducing citedreferencesexplorer crexplorer a program for reference publication year spectroscopy with cited references standardization"
    - "identification of long term concept symbols among citations can documents be clustered in terms of common intellectual histories"
    - "detecting the historical roots of tribology research a bibliometric analysis"
    - "referenced publication year spectroscopy rpys and algorithmic historiography the bibliometric reconstruction of andras schubert s œuvre"
    - "citnetexplorer a new software tool for analyzing and visualizing citation networks"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"

Connected through hyperedge HE-6 (induced by source paper "citation algorithms for identifying research milestones driving biomedical innovation"):
  with members:
    - "a triple helix model of medical innovation supply demand and technological capabilities in terms of medical subject headings"
    - "introducing citedreferencesexplorer crexplorer a program for reference publication year spectroscopy with cited references standardization"
    - "identification of long term concept symbols among citations can documents be clustered in terms of common intellectual histories"
    - "detecting the historical roots of tribology research a bibliometric analysis"
    - "growth rates of modern science a bibliometric analysis based on the number of publications and cited references"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"

Connected through hyperedge HE-7 (induced by source paper "introducing citedreferencesexplorer crexplorer a program for reference publication year spectroscopy with cited references standardization"):
  with members:
    - "identification of long term concept symbols among citations can documents be clustered in terms of common intellectual histories"
    - "citnetexplorer a new software tool for analyzing and visualizing citation networks"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"
    - "the use of percentiles and percentile rank classes in the analysis of bibliometric data opportunities and limits"
    - "a further step forward in measuring journals scientific prestige the sjr2 indicator"

Connected through hyperedge HE-8 (induced by source paper "referenced publication year spectroscopy rpys and algorithmic historiography the bibliometric reconstruction of andras schubert s œuvre"):
  with members:
    - "citnetexplorer a new software tool for analyzing and visualizing citation networks"
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"
    - "interdisciplinarity at the journal and specialty level the changing knowledge bases of the journal cognitive science"
    - "what can heterogeneity add to the scientometric map steps towards algorithmic historiography"

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)