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: "information metrics imetrics a research specialty with a socio cognitive identity"
  Abstract: Bibliometrics, "scientometrics", "informetrics", and "webometrics" can all be considered as manifestations of a single research area with similar objectives and methods, which we call "information metrics" or iMetrics. This study explores the cognitive and social distinctness of iMetrics with respect to the general information science (IS), focusing on a core of researchers, shared vocabulary and literature/knowledge base. Our analysis investigates the similarities and differences between four document sets. The document sets are drawn from three core journals for iMetrics research (Scientometrics, Journal of the American Society for Information Science and Technology, and Journal of Informetrics). We split JASIST into document sets containing iMetrics and general IS articles. The volume of publications in this representation of the specialty has increased rapidly during the last decade. A core of researchers that predominantly focus on iMetrics topics can thus be identified. This core group has developed a shared vocabulary as exhibited in high similarity of title words and one that shares a knowledge base. The research front of this field moves faster than the research front of information science in general, bringing it closer to Price's dream.

Connected through hyperedge HE-1 (induced by source paper "interdisciplinarity as diversity in citation patterns among journals rao stirling diversity relative variety and the gini coefficient"):
  with members:
    - "creativity in science and the link to cited references is the creative potential of papers reflected in their cited references"
    - "diversity and interdisciplinarity how can one distinguish and recombine disparity variety and balance"
    - "mapping patent classifications portfolio and statistical analysis and the comparison of strengths and weaknesses"
    - "betweenness and diversity in journal citation networks as measures of interdisciplinarity a tribute to eugene garfield"
    - "how journal rankings can suppress interdisciplinary research a comparison between innovation studies and business management"
    - "towards a new crown indicator some theoretical considerations"
    - "indicators of the interdisciplinarity of journals diversity centrality and citations"
    - "science overlay maps a new tool for research policy and library management"

Connected through hyperedge HE-2 (induced by source paper "a novel method for depicting academic disciplines through google scholar citations the case of bibliometrics"):
  with members:
    - "can we use google scholar to identify highly cited documents"
    - "a two sided academic landscape portrait of highly cited documents in google scholar 1950 2013"
    - "methods for estimating the size of google scholar"
    - "the google scholar experiment how to index false papers and manipulate bibliometric indicators"
    - "coverage and adoption of altmetrics sources in the bibliometric community"
    - "beyond citations scholars visibility on the social web"

Connected through hyperedge HE-3 (induced by source paper "highly cited papers in library and information science lis authors institutions and network structures"):
  with members:
    - "the generation of large networks from web of science data"
    - "which of the world s institutions employ the most highly cited researchers an analysis of the data from highlycited com"
    - "how are excellent highly cited papers defined in bibliometrics a quantitative analysis of the literature"
    - "are the authors of highly cited articles also the most productive ones"
    - "the use of percentiles and percentile rank classes in the analysis of bibliometric data opportunities and limits"

Connected through hyperedge HE-4 (induced by source paper "the operationalization of fields as wos subject categories wcs in evaluative bibliometrics the cases of library and information science and science technology studies"):
  with members:
    - "the role of handbooks in knowledge creation and diffusion a case of science and technology studies"
    - "brics countries and scientific excellence a bibliometric analysis of most frequently cited papers"
    - "the european union china and the united states in the top 1 and top 10 layers of most frequently cited publications competition and collaborations"
    - "how to evaluate individual researchers working in the natural and life sciences meaningfully a proposal of methods based on percentiles of citations"
    - "global maps of science based on the new web of science categories"
    - "the leiden ranking 2011 2012 data collection indicators and interpretation"
    - "citation analysis with medical subject headings mesh using the web of knowledge a new routine"
    - "a new methodology for constructing a publication level classification system of science"

Connected through hyperedge HE-5 (induced by source paper "the tournaments metaphor in citation impact studies power weakness ratios pwr as a journal indicator"):
  with members:
    - "the operationalization of fields as wos subject categories wcs in evaluative bibliometrics the cases of library and information science and science technology studies"
    - "a further step forward in measuring journals scientific prestige the sjr2 indicator"
    - "percentile ranks and the integrated impact indicator i3"
    - "a recursive field normalized bibliometric performance indicator an application to the field of library and information science"
    - "how journal rankings can suppress interdisciplinary research a comparison between innovation studies and business management"
    - "towards a new crown indicator some theoretical considerations"
    - "weighted citation an indicator of an article s prestige"
    - "caveats for the journal and field normalizations in the cwts leiden evaluations of research performance"

Connected through hyperedge HE-6 (induced by source paper "referenced publication years spectroscopy applied to imetrics scientometrics journal of informetrics and a relevant subset of jasist"):
  with members:
    - "detecting the historical roots of research fields by reference publication year spectroscopy rpys"
    - "redundancy generation in university industry government relations the triple helix modeled measured and simulated"
    - "interactive overlays of journals and the measurement of interdisciplinarity on the basis of aggregated journal journal citations"
    - "interdisciplinarity at the journal and specialty level the changing knowledge bases of the journal cognitive science"
    - "eugene garfield and algorithmic historiography co words co authors and journal names"
    - "an indicator of research front activity measuring intellectual organization as uncertainty reduction in document sets"

Connected through hyperedge HE-7 (induced by source paper "interdisciplinarity at the journal and specialty level the changing knowledge bases of the journal cognitive science"):
  with members:
    - "interactive overlays a new method for generating global journal maps from web of science data"
    - "how journal rankings can suppress interdisciplinary research a comparison between innovation studies and business management"
    - "structuration by intellectual organization the configuration of knowledge in relations among structural components in networks of science"
    - "the import and export of cognitive science"
    - "science overlay maps a new tool for research policy and library management"

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)