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Journal Cover Program: Electronic Library and Information Systems
   [283 followers]  Follow    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
     ISSN (Print) 0033-0337
     Published by Emerald Homepage  [308 journals]   [SJR: 0.657]   [H-I: 13]
  • Information Services and Digital Literacy: In Search of the Boundaries of
           Knowing
    • Authors: literatinetwork@emeraldinsight.com (Gina Nason
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
  • Innovations in Information: Perspectives for Theory and Practice
    • Authors: literatinetwork@emeraldinsight.com (Jan Pisanski
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
  • Preparing Collections for Digitization
    • Authors: literatinetwork@emeraldinsight.com (Fotis Lazarinis
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
  • Extracting bibliographical data for PDF documents with HMM and external
           resources
    • Authors: literatinetwork@emeraldinsight.com (Wen-Feng Hsiao; Te-Min Chang, Erwin Thomas
      Abstract:

      Purpose – The purpose of this paper is to propose an automatic metadata extraction and retrieval system to extract bibliographical information from digital academic documents in portable document formats (PDFs). Design/methodology/approach – The authors use PDFBox to extract text and font size information, a rule-based method to identify titles, and an Hidden Markov Model (HMM) to extract the titles and authors. Finally, the extracted titles and authors (possibly incorrect or incomplete) are sent as query strings to digital libraries (e.g. ACM, IEEE, CiteSeerX, SDOS, and Google Scholar) to retrieve the rest of metadata. Findings – Four experiments are conducted to examine the feasibility of the proposed system. The first experiment compares two different HMM models: multi-state model and one state model (the proposed model). The result shows that one state model can have a comparable performance with multi-state model, but is more suitable to deal with real-world unknown states. The second experiment shows that our proposed model (without the aid of online query) can achieve as good performance as other researcher's model on Cora paper header dataset. In the third experiment the paper examines the performance of our system on a small dataset of 43 real PDF research papers. The result shows that our proposed system (with online query) can perform pretty well on bibliographical data extraction and even outperform the free citation management tool Zotero 3.0. Finally, the paper conducts the fourth experiment with a larger dataset of 103 papers to compare our system with Zotero 4.0. The result shows that our system significantly outperforms Zotero 4.0. The feasibility of the proposed model is thus justified. Research limitations/implications – For academic implication, the system is unique in two folds: first, the system only uses Cora header set for HMM training, without using other tagged datasets or gazetteers resources, which means the system is light and scalable. Second, the system is workable and can be applied to extracting metadata of real-world PDF files. The extracted bibliographical data can then be imported into citation software such as endnote or refworks to increase researchers’ productivity. Practical implications – For practical implication, the system can outperform the existing tool, Zotero v4.0. This provides practitioners good chances to develop similar products in real applications; though it might require some knowledge about HMM implementation. Originality/value – The HMM implementation is not novel. What is innovative is that it actually combines two HMM models. The main model is adapted from Freitag and Mccallum (1999) and the authors add word features of the Nymble HMM (Bikel et al, 1997) to it. The system is workable even without manually tagging the datasets before training the model (the authors just use cora dataset to train and test on real-world PDF papers), as this is significantly different from what other works have done so far. The experimental results have shown sufficient evidence about the feasibility of our proposed method in this aspect.
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
  • A case study for understanding the nature of redundant entities in
           bibliographic digital libraries
    • Authors: literatinetwork@emeraldinsight.com (Byung-Won On; Gyu Sang Choi, Soo-Mok Jung
      Abstract:

      Purpose – The purpose of this paper is to collect and understand the nature of real cases of author name variants that have often appeared in bibliographic digital libraries (DLs) as a case study of the name authority control problem in DLs. Design/methodology/approach – To find a sample of name variants across DLs (e.g. DBLP and ACM) and in a single DL (e.g. ACM), the approach is based on two bipartite matching algorithms: Maximum Weighted Bipartite Matching and Maximum Cardinality Bipartite Matching. Findings – First, the authors validated the effectiveness and efficiency of the bipartite matching algorithms. The authors also studied the nature of real cases of author name variants that had been found across DLs (e.g. ACM, CiteSeer and DBLP) and in a single DL. Originality/value – To the best of the authors knowledge, there is less research effort to understand the nature of author name variants shown in DLs. A thorough analysis can help focus research effort on real problems that arise when the authors perform duplicate detection methods.
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
  • Use of online resources at Jawaharlal Nehru University: a quantitative
           study
    • Authors: literatinetwork@emeraldinsight.com (Manorama Tripathi; Sunil Kumar
      Abstract:

      Purpose – The main purpose of this paper is to describe the use of e-resources at Jawaharlal Nehru University (JNU), those are being offered through the University Grant Commission – Information and Library Network (UGC-INFONET) consortium. Statistical techniques are applied on usage reports generated by e-resources vendors/publishers to understand trend and seasonality in usages of e-resources in academic libraries. The researchers evaluated gain in popularity of e-resources and drew a comparison in use of various databases of e-resources in terms of volume of downloads over a period of three years. The study would help in designing an instrument to evaluate utilization of e-resources. The cross comparison of databases helps in identifying e-resources, which have been optimally used. Design/methodology/approach – The present study used quantitative approach to express utilization of e-resources in terms of number of downloads of full text research papers from Project Muse, Cambridge University Press, Oxford University Press, Springer Links, Taylor and Francis and JSTOR databases, accessible through the UGC-INFONET consortium. The investigation is based on secondary data of usage statistics made available by the UGC-INFONET consortium. The descriptive statistics techniques have been used in the initial phase of the investigation to understand trend in utilization of e-resources and examine robustness of various statistical tests to identify most appropriate tests for the latter phase of the investigation. The robustness analysis has been recommended for graphical and non-parametric tests for advanced investigation, in the latter phase of the study. The with-in cohort analysis techniques investigates numbers of monthly downloads from each database for a period of three years, i.e. 2008-2010 to explain seasonality in volume of downloads of e-resources. Findings – e-Resources have been gaining popularity gradually in academic libraries; this trend is in tune with gaining of popularity of web-based intellectual resources in other sectors. The study established need of library consortium for sharing resources and subscription fee. The investigation proves significant association between numbers of downloads of e-resources from different databases in the same period; thus gain in popularity of one database encourages readers to explore other databases. The study indicates seasonality effect in the usages of e-resources in academic libraries. This seasonality effect is contemporary to the academic calendar. There are large numbers of downloads just before the examinations, which are held twice in a year and negligible number of downloads during and around long summer study breaks. Thus, the bandwidth rendered to the university is not consistently used during the academic session. The coverage of databases in terms of disciplines and numbers of journals varies to great extent. There is overlapping in the coverage of databases. The strength of students and their demands for scholarly works also vary across disciplines, thus cross comparison of numbers of downloads from databases has little meaning until impact of these three parameters are not controlled in the investigation of utilization of e-resources. Originality/value – The literature shows that no study has been carried out for the use of e-resources by researchers of JNU.
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
  • The impact of Facebook on libraries and librarians: a review of the
           literature
    • Authors: literatinetwork@emeraldinsight.com (Evgenia Vassilakaki; Emmanouel Garoufallou
      Abstract:

      Purpose – Social networking sites are becoming more and more popular triggering an increase in published research and impacting different aspects of daily life. One such aspect concerns libraries and librarians and the way they have adopted social networking sites. The purpose of this paper is to present a selective review on libraries’ adoption and use of a specific social networking site such as Facebook in order to promote their services. Design/methodology/approach – The method of selective review is employed to identify, document and present the relevant literature in a structured and annotated way. More specifically, all types of documents published between 2006 and 2012 are considered. In addition, the papers are assigned based on their expressed aim/s to emerged themes and sub-themes. Findings – It was found that the main body of the reported literature focused on reporting experiences, problems and lessons learned from building a presence on Facebook. A few studies aimed to explore users’ and librarians’ perspectives towards social networking sites whereas there is a strong need for specific guidelines to assist libraries and librarians in adopting Facebook. Research limitations/implications – This systematic literature review consists of articles published between 2006 and 2012. Originality/value – This paper contributes to identifying, collecting and presenting research regarding the use of Facebook in the field of library science. In addition, it identifies and summarises the main problems and challenges libraries and librarians are faced with when employing Facebook.
      PubDate: Tue, 01 Jul 2014 00:00:00 +010
       
 
 
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