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: "revisiting the scaling of citations for research assessment"
  Abstract: Over the past decade, national research evaluation exercises, traditionally conducted using the peer review method, have begun opening to bibliometric indicators. The citations received by a publication are assumed as proxy for its quality, but they require standardization prior to use in comparative evaluation of organizations or individual scientists: the citation data must be standardized, due to the varying citation behavior across research fields. The objective of this paper is to compare the effectiveness of the different methods of normalizing citations, in order to provide useful indications to research assessment practitioners. Simulating a typical national research assessment exercise, he analysis is conducted for all subject categories in the hard sciences and is based on the Thomson Reuters Science Citation Index-Expanded®. Comparisons show that the citations average is the most effective scaling parameter, when the average is based only on the publications actually cited.

Connected through hyperedge HE-1 (induced by source paper "a nation s foreign and domestic professors which have better research performance the italian case"):
  with members:
    - "the impact of unproductive and top researchers on overall university research performance"
    - "revisiting the scientometric conceptualization of impact and its measurement"
    - "gender bias in academic recruitment"
    - "the determinants of academic career advancement evidence from italy"
    - "how do you define and measure research productivity"
    - "the spin off of elite universities in non competitive undifferentiated higher education systems an empirical simulation in italy"
    - "assessing national strengths and weaknesses in research fields"
    - "career advancement and scientific performance in universities"

Connected through hyperedge HE-2 (induced by source paper "testing for universality of mendeley readership distributions"):
  with members:
    - "predicting publication long term impact through a combination of early citations and journal impact factor"
    - "revisiting the scientometric conceptualization of impact and its measurement"
    - "an investigation on the skewness patterns and fractal nature of research productivity distributions at field and discipline level"
    - "skewness of citation impact data and covariates of citation distributions a large scale empirical analysis based on web of science data"
    - "scholarly use of social media and altmetrics a review of the literature"
    - "do altmetrics correlate with citations extensive comparison of altmetric indicators with citations from a multidisciplinary perspective"
    - "how well developed are altmetrics a cross disciplinary analysis of the presence of alternative metrics in scientific publications"
    - "altmetrics in the wild using social media to explore scholarly impact"

Connected through hyperedge HE-3 (induced by source paper "diversification versus specialization in scientific research which strategy pays off"):
  with members:
    - "the effects of gender age and academic rank on research diversification"
    - "the effect of multidisciplinary collaborations on research diversification"
    - "do interdisciplinary research teams deliver higher gains to science"
    - "specialization versus diversification in research activities the extent intensity and relatedness of field diversification by individual scientists"
    - "what is the appropriate length of the publication period over which to assess research performance"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"
    - "assessing the varying level of impact measurement accuracy as a function of the citation window length"
    - "allocative efficiency in public research funding can bibliometrics help"

Connected through hyperedge HE-4 (induced by source paper "predicting publication long term impact through a combination of early citations and journal impact factor"):
  with members:
    - "revisiting the scientometric conceptualization of impact and its measurement"
    - "refrain from adopting the combination of citation and journal metrics to grade publications as used in the italian national research assessment exercise vqr 2011 2014"
    - "predicting the long term citation impact of recent publications"
    - "how to improve the prediction based on citation impact percentiles for years shortly after the publication date"
    - "quantifying long term scientific impact"
    - "assessing the varying level of impact measurement accuracy as a function of the citation window length"
    - "citations versus journal impact factor as proxy of quality could the latter ever be preferable"

Connected through hyperedge HE-5 (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-6 (induced by source paper "do all citations value the same valuing citations by the value of the citing items"):
  with members:
    - "revisiting the scientometric conceptualization of impact and its measurement"
    - "a farewell to the mncs and like size independent indicators"
    - "refrain from adopting the combination of citation and journal metrics to grade publications as used in the italian national research assessment exercise vqr 2011 2014"
    - "how do you define and measure research productivity"
    - "a further step forward in measuring journals scientific prestige the sjr2 indicator"
    - "applying weighted pagerank to author citation networks"
    - "assessing the varying level of impact measurement accuracy as a function of the citation window length"
    - "towards a new crown indicator some theoretical considerations"

Connected through hyperedge HE-7 (induced by source paper "bibliometric evaluation of research performance where do we stand"):
  with members:
    - "measuring science irresistible temptations easy shortcuts and dangerous consequences"
    - "a sensitivity analysis of researchers productivity rankings to the time of citation observation"
    - "a farewell to the mncs and like size independent indicators"
    - "refrain from adopting the combination of citation and journal metrics to grade publications as used in the italian national research assessment exercise vqr 2011 2014"
    - "inefficiency in selecting products for submission to national research assessment exercises"
    - "individual research performance a proposal for comparing apples to oranges"
    - "what is the appropriate length of the publication period over which to assess research performance"
    - "national research assessment exercises a comparison of peer review and bibliometrics rankings"

Connected through hyperedge HE-8 (induced by source paper "how long do top scientists maintain their stardom an analysis by region gender and discipline evidence from italy"):
  with members:
    - "the impact of unproductive and top researchers on overall university research performance"
    - "the north south divide in the italian higher education system"
    - "a farewell to the mncs and like size independent indicators"
    - "the determinants of academic career advancement evidence from italy"
    - "how do you define and measure research productivity"
    - "the importance of accounting for the number of co authors and their order when assessing research performance at the individual level in the life sciences"
    - "what is the appropriate length of the publication period over which to assess research performance"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"

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)