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 dangers of performance based research funding in non competitive higher education systems"
  Abstract: An increasing number of nations allocate public funds to research institutions on the basis of rankings obtained from national evaluation exercises. Therefore, in non-competitive higher education systems where top scientists are dispersed among all the universities, rather than concentrated among a few, there is a high risk of penalizing those top scientists who work in lower-performance universities. Using a 5 year bibliometric analysis conducted on all Italian universities active in the hard sciences from 2004 to 2008, this work analyzes the distribution of publications and relevant citations by scientists within the universities, measures the research performance of individual scientists, quantifies the intensity of concentration of top scientists at each university, provides performance rankings for the universities, and indicates the effects of selective funding on the top scientists of low-ranked universities.

Connected through hyperedge HE-1 (induced by source paper "the impact of unproductive and top researchers on overall university research performance"):
  with members:
    - "revisiting size effects in higher education research productivity"
    - "the dispersion of research performance within and between universities as a potential indicator of the competitive intensity in higher education systems"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"
    - "national scale research performance assessment at the individual level"
    - "research productivity are higher academic ranks more productive than lower ones"

Connected through hyperedge HE-2 (induced by source paper "analyzing the disciplinary focus of universities can rankings be a one size fits all"):
  with members:
    - "what do university rankings by fields rank exploring discrepancies between the organizational structure of universities and bibliometric classifications"
    - "does google scholar contain all highly cited documents 1950 2013"
    - "an insight into the importance of national university rankings in an international context the case of the i ugr rankings of spanish universities"
    - "citation analysis may severely underestimate the impact of clinical research as compared to basic research"
    - "reviewers ratings and bibliometric indicators hand in hand when assessing over research proposals"
    - "the google scholar experiment how to index false papers and manipulate bibliometric indicators"
    - "mapping academic institutions according to their journal publication profile spanish universities as a case study"
    - "the leiden ranking 2011 2012 data collection indicators and interpretation"

Connected through hyperedge HE-3 (induced by source paper "the north south divide in the italian higher education system"):
  with members:
    - "accounting for gender research performance differences in ranking universities"
    - "do they agree bibliometric evaluation versus informed peer review in the italian research assessment exercise"
    - "a farewell to the mncs and like size independent indicators"
    - "a methodology to measure the effectiveness of academic recruitment and turnover"
    - "the vqr italy s second national research assessment methodological failures and ranking distortions"
    - "should the research performance of scientists be distinguished by gender"
    - "the determinants of academic career advancement evidence from italy"
    - "relatives in the same university faculty nepotism or merit"

Connected through hyperedge HE-4 (induced by source paper "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"):
  with members:
    - "do they agree bibliometric evaluation versus informed peer review in the italian research assessment exercise"
    - "the vqr italy s second national research assessment methodological failures and ranking distortions"
    - "inefficiency in selecting products for submission to national research assessment exercises"
    - "national peer review research assessment exercises for the hard sciences can be a complete waste of money the italian case"
    - "national research assessment exercises the effects of changing the rules of the game during the game"
    - "citations versus journal impact factor as proxy of quality could the latter ever be preferable"
    - "allocative efficiency in public research funding can bibliometrics help"

Connected through hyperedge HE-5 (induced by source paper "the dispersion of the citation distribution of top scientists publications"):
  with members:
    - "testing the trade off between productivity and quality in research activities"
    - "revisiting the scaling of citations for research assessment"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"
    - "national scale research performance assessment at the individual level"

Connected through hyperedge HE-6 (induced by source paper "evaluating university research same performance indicator different rankings"):
  with members:
    - "the impact of unproductive and top researchers on overall university research performance"
    - "how do you define and measure research productivity"
    - "measuring institutional research productivity for the life sciences the importance of accounting for the order of authors in the byline"
    - "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"
    - "the dispersion of research performance within and between universities as a potential indicator of the competitive intensity in higher education systems"
    - "revisiting the scaling of citations for research assessment"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"
    - "towards a new crown indicator some theoretical considerations"

Connected through hyperedge HE-7 (induced by source paper "an assessment of the first scientific habilitation for university appointments in italy"):
  with members:
    - "quantitative analysis of the italian national scientific qualification"
    - "the determinants of academic career advancement evidence from italy"
    - "the spin off of elite universities in non competitive undifferentiated higher education systems an empirical simulation in italy"
    - "career advancement and scientific performance in universities"
    - "the dispersion of research performance within and between universities as a potential indicator of the competitive intensity in higher education systems"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"

Connected through hyperedge HE-8 (induced by source paper "variability of research performance across disciplines within universities in non competitive higher education systems"):
  with members:
    - "the dispersion of research performance within and between universities as a potential indicator of the competitive intensity in higher education systems"
    - "revisiting the scaling of citations for research assessment"
    - "a heuristic approach to author name disambiguation in bibliometrics databases for large scale research assessments"
    - "research productivity are higher academic ranks more productive than lower ones"
    - "a field standardized application of dea to national scale research assessment of universities"
    - "comparing bibliometric statistics obtained from the web of science and scopus"
    - "the measurement of italian universities research productivity by a non parametric bibliometric methodology"

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)