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: "do interdisciplinary research teams deliver higher gains to science"
  Abstract: The present paper takes its place in the stream of studies that analyze the effect of interdisciplinarity on the impact of research output. Unlike previous studies, in this study the interdisciplinarity of the publications is not inferred through their citing or cited references, but rather by identifying the authors' designated fields of research. For this we draw on the scientific classification of Italian academics, and their publications as indexed in the WoS over a 5-year period (2004---2008). We divide the publications in three subsets on the basis the nature of co-authorship: those papers coauthored with academics from different fields, which show high intensity of inter-field collaboration ("specific" collaboration, occurring in 110 pairings of fields); those papers coauthored with academics who are simply from different "non-specific" fields; and finally co-authorships within a single field. We then compare the citations of the papers and the impact factor of the publishing journals between the three subsets. The results show significant differences, generally in favor of the interdisciplinary authorships, in only one third (or slightly more) of the cases. The analysis provides the value of the median differences for each pair of publication subsets.

Connected through hyperedge HE-1 (induced by source paper "authorship analysis of specialized vs diversified research output"):
  with members:
    - "diversification versus specialization in scientific research which strategy pays off"
    - "the effects of gender age and academic rank on research diversification"
    - "the effect of multidisciplinary collaborations on research diversification"
    - "specialization versus diversification in research activities the extent intensity and relatedness of field diversification by individual scientists"
    - "the relationship among research productivity research collaboration and their determinants"
    - "does your surname affect the citability of your publications"
    - "variation in research collaboration patterns across academic ranks"
    - "how do you define and measure research productivity"

Connected through hyperedge HE-2 (induced by source paper "the differing meanings of indicators under different policy contexts the case of internationalisation"):
  with members:
    - "making sense of global collaboration dynamics developing a methodological framework to study dis similarities between country disciplinary profiles and choice of collaboration partners"
    - "mining university rankings publication output and citation impact as their basis"
    - "the many faces of mobility using bibliometric data to measure the movement of scientists"
    - "global research collaboration networks and partners in south east asia"
    - "a critical comparative analysis of five world university rankings"
    - "interpreting altmetrics viewing acts on social media through the lens of citation and social theories"
    - "towards a global scientific brain indicators of researcher mobility using co affiliation data"
    - "how journal rankings can suppress interdisciplinary research a comparison between innovation studies and business management"

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"
    - "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"
    - "revisiting the scaling of citations for research assessment"
    - "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 "the effect of multidisciplinary collaborations on research diversification"):
  with members:
    - "diversification versus specialization in scientific research which strategy pays off"
    - "the effects of gender age and academic rank on research diversification"
    - "does your surname affect the citability of your publications"
    - "how do you define and measure research productivity"
    - "the collaboration behaviors of scientists in italy a field level analysis"
    - "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)