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: "towards a book publishers citation reports first approach using the book citation index"
  Abstract: The absence of books and book chapters in the Web of Science Citation Indexes (SCI, SSCI and A&HCI) has always been considered an important flaw but the Thomson Reuters 'Book Citation Index' database was finally available in October of 2010 indexing 29,618 books and 379,082 book chapters. The Book Citation Index opens a new window of opportunities for analyzing these fields from a bibliometric point of view. The main objective of this article is to analyze different impact indicators referred to the scientific publishers included in the Book Citation Index for the Social Sciences and Humanities fields during 2006-2011. This way we construct what we have called the 'Book Publishers Citation Reports'. For this, we present a total of 19 rankings according to the different disciplines in Humanities & Arts and Social Sciences & Law with six indicators for scientific publishers

Connected through hyperedge HE-1 (induced by source paper "the insoluble problems of books what does altmetric com have to offer"):
  with members:
    - "reviewing indicating and counting books for modern research evaluation systems"
    - "filling the citation gap measuring the multidimensional impact of the academic book at institutional level with plumx"
    - "plumx as a potential tool to assess the macroscopic multidimensional impact of books"
    - "using almetrics for contextualised mapping of societal impact from hits to networks"
    - "scholarly use of social media and altmetrics a review of the literature"
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
    - "do altmetrics point to the broader impact of research an overview of benefits and disadvantages of altmetrics"
    - "new data new possibilities exploring the insides of altmetric com"

Connected through hyperedge HE-2 (induced by source paper "reviewing indicating and counting books for modern research evaluation systems"):
  with members:
    - "filling the citation gap measuring the multidimensional impact of the academic book at institutional level with plumx"
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
    - "the role of handbooks in knowledge creation and diffusion a case of science and technology studies"
    - "mapping citation patterns of book chapters in the book citation index"
    - "comparing journals from different fields of science and social science through a jcr subject categories normalized impact factor"
    - "measuring contextual citation impact of scientific journals"

Connected through hyperedge HE-3 (induced by source paper "filling the citation gap measuring the multidimensional impact of the academic book at institutional level with plumx"):
  with members:
    - "grand challenges in altmetrics heterogeneity data quality and dependencies"
    - "scholarly use of social media and altmetrics a review of the literature"
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
    - "do altmetrics correlate with citations extensive comparison of altmetric indicators with citations from a multidisciplinary perspective"
    - "do altmetrics point to the broader impact of research an overview of benefits and disadvantages of altmetrics"
    - "new data new possibilities exploring the insides of altmetric com"
    - "most borrowed is most cited library loan statistics as a proxy for monograph selection in citation indexes"
    - "mapping citation patterns of book chapters in the book citation index"

Connected through hyperedge HE-4 (induced by source paper "plumx as a potential tool to assess the macroscopic multidimensional impact of books"):
  with members:
    - "measuring book impact based on the multi granularity online review mining"
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
    - "new data new possibilities exploring the insides of altmetric com"
    - "most borrowed is most cited library loan statistics as a proxy for monograph selection in citation indexes"
    - "mapping citation patterns of book chapters in the book citation index"
    - "edited volumes monographs and book chapters in the book citation index bkci and science citation index sci sosci a hci"

Connected through hyperedge HE-5 (induced by source paper "measuring book impact based on the multi granularity online review mining"):
  with members:
    - "validity of altmetrics data for measuring societal impact a study using data from altmetric and f1000prime"
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"

Connected through hyperedge HE-6 (induced by source paper "the bipublishers ranking main results and methodological problems when constructing rankings of academic publishers"):
  with members:
    - "mapping citation patterns of book chapters in the book citation index"

Connected through hyperedge HE-7 (induced by source paper "bibliometric indicators for publishers data processing indicators and interpretation"):
  with members:
    - "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
    - "the role of handbooks in knowledge creation and diffusion a case of science and technology studies"
    - "mapping citation patterns of book chapters in the book citation index"

Connected through hyperedge HE-8 (induced by source paper "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"):
  with members:
    - "mapping citation patterns of book chapters in the book citation index"
    - "edited volumes monographs and book chapters in the book citation index bkci and science citation index sci sosci a hci"

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)