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: "the structure of the arts humanities citation index a mapping on the basis of aggregated citations among 1 157 journals"
  Abstract: Using the Arts & Humanities Citation Index (A&HCI) 2008, we apply mapping techniques previously developed for mapping journal structures in the Science and Social Science Citation Indices. Citation relations among the 110,718 records were aggregated at the level of 1,157 journals specific to the A&HCI, and the journal structures are questioned on whether a cognitive structure can be reconstructed and visualized. Both cosine-normalization (bottom up) and factor analysis (top down) suggest a division into approximately twelve subsets. The relations among these subsets are explored using various visualization techniques. However, we were not able to retrieve this structure using the ISI Subject Categories, including the 25 categories which are specific to the A&HCI. We discuss options for validation such as against the categories of the Humanities Indicators of the American Academy of Arts and Sciences, the panel structure of the European Reference Index for the Humanities (ERIH), and compare our results with the curriculum organization of the Humanities Section of the College of Letters and Sciences of UCLA as an example of institutional organization.

Connected through hyperedge HE-1 (induced by source paper "science through wikipedia a novel representation of open knowledge through co citation networks"):
  with members:
    - "mapping the backbone of the humanities through the eyes of wikipedia"
    - "the insoluble problems of books what does altmetric com have to offer"
    - "amplifying the impact of open access wikipedia and the diffusion of science"
    - "knowledge acquisition a complex networks approach"
    - "using network science and text analytics to produce surveys in a scientific topic"
    - "using almetrics for contextualised mapping of societal impact from hits to networks"
    - "power laws in citation distributions evidence from scopus"
    - "mapping citation patterns of book chapters in the book citation index"

Connected through hyperedge HE-2 (induced by source paper "mapping the backbone of the humanities through the eyes of wikipedia"):
  with members:
    - "amplifying the impact of open access wikipedia and the diffusion of science"
    - "mapping citation patterns of book chapters in the book citation index"
    - "global maps of science based on the new web of science categories"
    - "science overlay maps a new tool for research policy and library management"

Connected through hyperedge HE-3 (induced by source paper "the structural role of the core literature in history"):
  with members:
    - "constructing bibliometric networks a comparison between full and fractional counting"
    - "clustering scientific publications based on citation relations a systematic comparison of different methods"
    - "the journal coverage of web of science and scopus a comparative analysis"
    - "a review of theory and practice in scientometrics"
    - "a review of the literature on citation impact indicators"
    - "maps on the basis of the arts humanities citation index the journals leonardo and art journal versus digital humanities as a topic"

Connected through hyperedge HE-4 (induced by source paper "science and its significant other representing the humanities in bibliometric scholarship"):
  with members:
    - "the structural role of the core literature in history"
    - "citnetexplorer a new software tool for analyzing and visualizing citation networks"

Connected through hyperedge HE-5 (induced by source paper "construction of a pragmatic base line for journal classifications and maps based on aggregated journal journal citation relations"):
  with members:
    - "which type of citation analysis generates the most accurate taxonomy of scientific and technical knowledge"
    - "the dynamics of triads in aggregated journal journal citation relations specialty developments at the above journal level"
    - "journal portfolio analysis for countries cities and organizations maps and comparisons"
    - "large scale analysis of the accuracy of the journal classification systems of web of science and scopus"
    - "the operationalization of fields as wos subject categories wcs in evaluative bibliometrics the cases of library and information science and science technology studies"
    - "how to evaluate individual researchers working in the natural and life sciences meaningfully a proposal of methods based on percentiles of citations"
    - "citation analysis may severely underestimate the impact of clinical research as compared to basic research"
    - "interactive overlays of journals and the measurement of interdisciplinarity on the basis of aggregated journal journal citations"

Connected through hyperedge HE-6 (induced by source paper "skewness of citation impact data and covariates of citation distributions a large scale empirical analysis based on web of science data"):
  with members:
    - "validity of basing authors publication strategy on journal impact factors"
    - "methods for the generation of normalized citation impact scores in bibliometrics which method best reflects the judgements of experts"
    - "the weakening relationship between the impact factor and papers citations in the digital age"
    - "the use of percentiles and percentile rank classes in the analysis of bibliometric data opportunities and limits"
    - "caveats for the journal and field normalizations in the cwts leiden evaluations of research performance"

Connected through hyperedge HE-7 (induced by source paper "grand challenges in measuring and characterizing scholarly impact"):
  with members:
    - "universality of scholarly impact metrics"
    - "cwts crown indicator measures citation impact of a research group s publication oeuvre"
    - "measuring contextual citation impact of scientific journals"
    - "a principal component analysis of 39 scientific impact measures"

Connected through hyperedge HE-8 (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"
    - "information metrics imetrics a research specialty with a socio cognitive identity"
    - "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"

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)