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: "methods for the generation of normalized citation impact scores in bibliometrics which method best reflects the judgements of experts"
  Abstract: Evaluative bibliometrics compares the citation impact of researchers, research groups and institutions with each other across time scales and disciplines. Both factors - discipline and period - have an influence on the citation count which is independent of the quality of the publication. Normalizing the citation impact of papers for these two factors started in the mid-1980s. Since then, a range of different methods have been presented for producing normalized citation impact scores. The current study uses a data set of over 50,000 records to test which of the methods so far presented correlate better with the assessment of papers by peers. The peer assessments come from F1000Prime - a post-publication peer review system of the biomedical literature. Of the normalized indicators, the current study involves not only cited-side indicators, such as the mean normalized citation score, but also citing-side indicators. As the results show, the correlations of the indicators with the peer assessments all turn out to be very similar. Since F1000 focuses on biomedicine, it is important that the results of this study are validated by other studies based on datasets from other disciplines or (ideally) based on multi-disciplinary datasets.

Connected through hyperedge HE-1 (induced by source paper "an evaluation of percentile measures of citation impact and a proposal for making them better"):
  with members:
    - "heuristics as conceptual lens for understanding and studying the usage of bibliometrics in research evaluation"
    - "creativity in science and the link to cited references is the creative potential of papers reflected in their cited references"
    - "plots for visualizing paper impact and journal impact of single researchers in a single graph"
    - "how are excellent highly cited papers defined in bibliometrics a quantitative analysis of the literature"
    - "the substantive and practical significance of citation impact differences between institutions guidelines for the analysis of percentiles using effect sizes and confidence intervals"
    - "how to evaluate individual researchers working in the natural and life sciences meaningfully a proposal of methods based on percentiles of citations"
    - "which percentile based approach should be preferred for calculating normalized citation impact values an empirical comparison of five approaches including a newly developed citation rank approach p100"
    - "on the calculation of percentile based bibliometric indicators"

Connected through hyperedge HE-2 (induced by source paper "unbiased evaluation of ranking metrics reveals consistent performance in science and technology citation data"):
  with members:
    - "influence of fake news in twitter during the 2016 us presidential election"
    - "early identification of important patents design and validation of citation network metrics"
    - "bias amplification in artificial intelligence systems"
    - "a review of theory and practice in scientometrics"
    - "a review of the literature on citation impact indicators"
    - "coauthorship and citation patterns in the physical review"
    - "the use of percentiles and percentile rank classes in the analysis of bibliometric data opportunities and limits"
    - "quantifying the influence of scientists and their publications distinguishing between prestige and popularity"

Connected through hyperedge HE-3 (induced by source paper "how well does i3 perform for impact measurement compared to other bibliometric indicators the convergent validity of several field normalized indicators"):
  with members:
    - "which differences can be expected when two universities in the leiden ranking are compared some benchmarks for institutional research evaluations"
    - "creativity in science and the link to cited references is the creative potential of papers reflected in their cited references"
    - "revisiting relative indicators and provisional truths"
    - "which type of citation analysis generates the most accurate taxonomy of scientific and technical knowledge"
    - "citation score normalized by cited references csncr the introduction of a new citation impact indicator"
    - "a review of theory and practice in scientometrics"
    - "a review of the literature on citation impact indicators"
    - "how are excellent highly cited papers defined in bibliometrics a quantitative analysis of the literature"

Connected through hyperedge HE-4 (induced by source paper "should citations be field normalized in evaluative bibliometrics an empirical analysis based on propensity score matching"):
  with members:
    - "the preeminence of ethnic diversity in scientific collaboration"
    - "the geography of references in elite articles which countries contribute to the archives of knowledge"
    - "field normalization of scientometric indicators"
    - "which type of citation analysis generates the most accurate taxonomy of scientific and technical knowledge"
    - "relative citation ratio rcr an empirical attempt to study a new field normalized bibliometric indicator"
    - "validity of basing authors publication strategy on journal impact factors"
    - "a review of theory and practice in scientometrics"
    - "large scale analysis of the accuracy of the journal classification systems of web of science and scopus"

Connected through hyperedge HE-5 (induced by source paper "like for like bibliometric substitutes for peer review advantages and limits of indicators calculated from the ep index"):
  with members:
    - "technological research in the eu is less efficient than the world average eu research policy risks europeans future"
    - "a review of theory and practice in scientometrics"
    - "a review of the literature on citation impact indicators"
    - "a systematic empirical comparison of different approaches for normalizing citation impact indicators"
    - "which percentile based approach should be preferred for calculating normalized citation impact values an empirical comparison of five approaches including a newly developed citation rank approach p100"
    - "on the calculation of percentile based bibliometric indicators"
    - "the use of percentiles and percentile rank classes in the analysis of bibliometric data opportunities and limits"

Connected through hyperedge HE-6 (induced by source paper "field normalization of scientometric indicators"):
  with members:
    - "relative citation ratio rcr an empirical attempt to study a new field normalized bibliometric indicator"
    - "citation analysis with microsoft academic"
    - "three practical field normalised alternative indicator formulae for research evaluation"
    - "a comparison of university performance scores and ranks by mncs and fss"
    - "a farewell to the mncs and like size independent indicators"
    - "citation score normalized by cited references csncr the introduction of a new citation impact indicator"
    - "national disciplinary and temporal variations in the extent to which articles with more authors have more impact evidence from a geometric field normalised citation indicator"
    - "quality versus quantity in scientific impact"

Connected through hyperedge HE-7 (induced by source paper "critical rationalism and the search for standard field normalized indicators in bibliometrics"):
  with members:
    - "algorithmically generated subject categories based on citation relations an empirical micro study using papers on overall water splitting"
    - "relative citation ratio rcr an empirical attempt to study a new field normalized bibliometric indicator"
    - "citation score normalized by cited references csncr the introduction of a new citation impact indicator"
    - "a review of the literature on citation impact indicators"
    - "how are excellent highly cited papers defined in bibliometrics a quantitative analysis of the literature"
    - "alternative metrics in scientometrics a meta analysis of research into three altmetrics"
    - "measuring impact in research evaluations a thorough discussion of methods for effects of and problems with impact measurements"
    - "on the causes of subject specific citation rates in web of science"

Connected through hyperedge HE-8 (induced by source paper "algorithmically generated subject categories based on citation relations an empirical micro study using papers on overall water splitting"):
  with members:
    - "granularity of algorithmically constructed publication level classifications of research publications identification of topics"
    - "which type of citation analysis generates the most accurate taxonomy of scientific and technical knowledge"
    - "a review of theory and practice in scientometrics"
    - "large scale analysis of the accuracy of the journal classification systems of web of science and scopus"
    - "a review of the literature on citation impact indicators"
    - "on the causes of subject specific citation rates in web of science"
    - "the normalization of citation counts based on classification systems"
    - "source normalized indicators of citation impact an overview of different approaches and an empirical comparison"

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)