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: "globalisation of science in kilometres"
  Abstract: The ongoing globalisation of science has undisputedly a major impact on how and where scientific research is being conducted nowadays. Yet, the big picture remains blurred. It is largely unknown where this process is heading, and at which rate. Which countries are leading or lagging? Many of its key features are difficult if not impossible to capture in measurements and comparative statistics. Our empirical study measures the extent and growth of scientific globalisation in terms of physical distances between co-authoring researchers. Our analysis, drawing on 21 million research publications across all countries and fields of science, reveals that contemporary science has globalised at a fairly steady rate during recent decades. The average collaboration distance per publication has increased from 334 kilometres in 1980 to 1553 in 2009. Despite significant differences in globalisation rates across countries and fields of science, we observe a pervasive process in motion, moving towards a truly interconnected global science system.

Connected through hyperedge HE-1 (induced by source paper "making sense of global collaboration dynamics developing a methodological framework to study dis similarities between country disciplinary profiles and choice of collaboration partners"):
  with members:
    - "global research collaboration networks and partners in south east asia"

Connected through hyperedge HE-2 (induced by source paper "missing author address information in web of science an explorative study"):
  with members:
    - "book reviews in academic journals patterns and dynamics"
    - "funding acknowledgment analysis queries and caveats"
    - "a spatial scientometric analysis of the publication output of cities worldwide"
    - "constructing bibliometric networks a comparison between full and fractional counting"
    - "a new methodology for constructing a publication level classification system of science"

Connected through hyperedge HE-3 (induced by source paper "a spatial scientometric analysis of the publication output of cities worldwide"):
  with members:
    - "mapping spatial and temporal changes of global corporate research and development activities by conducting a bibliometric analysis"
    - "exploring the position of cities in global corporate research and development a bibliometric analysis by two different geographical approaches"
    - "the journal coverage of web of science and scopus a comparative analysis"
    - "how have the eastern european countries of the former warsaw pact developed since 1990 a bibliometric study"
    - "mapping excellence in the geography of science an approach based on scopus data"
    - "the detection of hot regions in the geography of science a visualization approach by using density maps"
    - "mapping the geography of science distribution patterns and networks of relations among cities and institutes"

Connected through hyperedge HE-4 (induced by source paper "is collaboration among scientists related to the citation impact of papers because their quality increases with collaboration an analysis based on data from f1000prime and normalized citation scores"):
  with members:
    - "excellence networks in science a web based application based on bayesian multilevel logistic regression bmlr for the identification of institutions collaborating successfully"
    - "validity of altmetrics data for measuring societal impact a study using data from altmetric and f1000prime"
    - "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"
    - "do altmetrics point to the broader impact of research an overview of benefits and disadvantages of altmetrics"
    - "brics countries and scientific excellence a bibliometric analysis of most frequently cited papers"
    - "on the causes of subject specific citation rates in web of science"
    - "how to calculate the practical significance of citation impact differences an empirical example from evaluative institutional bibliometrics using adjusted predictions and marginal effects"

Connected through hyperedge HE-5 (induced by source paper "excellence networks in science a web based application based on bayesian multilevel logistic regression bmlr for the identification of institutions collaborating successfully"):
  with members:
    - "field normalized citation impact indicators and the choice of an appropriate counting method"
    - "what is the effect of country specific characteristics on the research performance of scientific institutions using multi level statistical models to rank and map universities and research focused institutions worldwide"
    - "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"
    - "international collaboration in science the global map and the network"
    - "on the calculation of percentile based bibliometric indicators"
    - "a further step forward in measuring journals scientific prestige the sjr2 indicator"
    - "the leiden ranking 2011 2012 data collection indicators and interpretation"

Connected through hyperedge HE-6 (induced by source paper "the leiden ranking 2011 2012 data collection indicators and interpretation"):
  with members:
    - "caveats for using statistical significance tests in research assessments"
    - "testing differences statistically with the leiden ranking"
    - "towards a new crown indicator some theoretical considerations"
    - "severe language effect in university rankings particularly germany and france are wronged in citation based rankings"

Connected through hyperedge HE-7 (induced by source paper "research collaboration and the expanding science grid measuring globalization processes worldwide"):
  with members:
    - "mapping the geography of science distribution patterns and networks of relations among cities and institutes"

Connected through hyperedge HE-8 (induced by source paper "the detection of hot regions in the geography of science a visualization approach by using density maps"):
  with members:
    - "mapping the geography of science distribution patterns and networks of relations among cities and institutes"

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)