human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "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.

Includes members:
  Member "mapping citation patterns of book chapters in the book citation index":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "science through wikipedia a novel representation of open knowledge through co citation networks")
  Member "edited volumes monographs and book chapters in the book citation index bkci and science citation index sci sosci a hci":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "can microsoft academic help to assess the citation impact of academic books")
  Member "towards a book publishers citation reports first approach using the book citation index":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "the insoluble problems of books what does altmetric com have to offer")

Question: Please tell me which class the source paper 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)