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: "analyzing the citation characteristics of books edited books book series and publisher types in the book citation index"
  Abstract: This paper presents a first approach to analyzing the factors that determine the citation characteristics of books. For this we use the Thomson Reuters' book citation index, a novel multidisciplinary database launched in 2011 which offers bibliometric data on books. We analyze three possible factors which are considered to affect the citation impact of books: the presence of editors, the inclusion in series and the type of publisher. Also, we focus on highly cited books to see if these factors may affect them as well. We considered as highly cited books, those in the top 5 % of those most highly cited in the database. We define these three aspects and present results for four major scientific areas in order to identify differences by area (science, engineering and technology, social sciences and arts and humanities). Finally, we report differences for edited books and publisher type, however books included in series showed higher impact in two areas.

Connected through hyperedge HE-1 (induced by source paper "nine million books and eleven million citations a study of book based scholarly communication using opencitations"):
  with members:
    - "coci the opencitations index of crossref open doi to doi citations"

Connected through hyperedge HE-2 (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"
    - "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"
    - "how well developed are altmetrics a cross disciplinary analysis of the presence of alternative metrics in scientific publications"

Connected through hyperedge HE-3 (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"
    - "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"
    - "towards a book publishers citation reports first approach using the book citation index"
    - "measuring contextual citation impact of scientific journals"

Connected through hyperedge HE-4 (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"
    - "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"
    - "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 "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"
    - "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"
    - "towards a book publishers citation reports first approach using the book citation index"

Connected through hyperedge HE-6 (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"
    - "towards a book publishers citation reports first approach using the book citation index"

Connected through hyperedge HE-7 (induced by source paper "bibliometric indicators for publishers data processing indicators and interpretation"):
  with members:
    - "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"
    - "towards a book publishers citation reports first approach using the book citation index"

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)