Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 28. April 2022)

Suchergebnisse

• 1
  Zhao, D. ; Strotmann, A. ; Cappello, A.: In-text function of author self-citations : implications for research evaluation practice.
  In: Journal of the Association for Information Science and Technology. 69(2018) no.7, S.949-952.
  (Brief communication)
  
  Abstract: Author self-citations were examined as to their function, frequency, and location in the full text of research articles and compared with external citations. Function analysis was based on manual coding of a small dataset in the field of library and information studies, whereas the analyses by frequency and location used both this small dataset and a large dataset from PubMed Central. Strong evidence was found that self-citations appear more likely to serve as substantial citations in a text than do external citations. This finding challenges previous studies that assumed that self-citations should be discounted or even removed and suggests that self-citations should be given more weight in citation analysis, if anything.
  
  Inhalt: Vgl.: https://onlinelibrary.wiley.com/doi/abs/10.1002/asi.24046.
  
  Themenfeld: Informetrie
  
  
• 2
  Zhao, D. ; Strotmann, A.: Dimensions and uncertainties of author citation rankings : lessons learned from frequency-weighted in-text citation counting.
  In: Journal of the Association for Information Science and Technology. 67(2016) no.3, S.671-682.
  
  Abstract: In-text frequency-weighted citation counting has been seen as a particularly promising solution to the well-known problem of citation analysis that it treats all citations equally, be they crucial to the citing paper or perfunctory. But what is a good weighting scheme? We compare 12 different in-text citation frequency-weighting schemes in the field of library and information science (LIS) and explore author citation impact patterns based on their performance in these schemes. Our results show that the ranks of authors vary widely with different weighting schemes that favor or are biased against common citation impact patterns-substantiated, applied, or noted. These variations separate LIS authors quite clearly into groups with these impact patterns. With consensus rank limits, the hard upper and lower bounds for reasonable author ranks that they provide suggest that author citation ranks may be subject to something like an uncertainty principle.
  
  Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23418/abstract.
  
  Themenfeld: Informetrie
  
  
• 3
  Zhao, D. ; Strotmann, A.: ¬The knowledge base and research front of information science 2006-2010 : an author cocitation and bibliographic coupling analysis.
  In: Journal of the Association for Information Science and Technology. 65(2014) no.5, S.995-1006.
  
  Abstract: This study continues a long history of author cocitation analysis (and more recently, author bibliographic coupling analysis) of the intellectual structure of information science (IS) into the time period 2006 to 2010 (IS 2006-2010). We find that web technologies continue to drive developments, especially at the research front, although perhaps more indirectly than before. A broadening of perspectives is visible in IS 2006-2010, where network science becomes influential and where full-text analysis methods complement traditional computer science influences. Research in the areas of the h-index and mapping of science appears to have been highlights of IS 2006-2011. This study tests and confirms a forecast made previously by comparing knowledge-base and research-front findings for IS 2001-2005, which expected both the information retrieval (IR) systems and webometrics specialties to shrink in 2006 to 2010. A corresponding comparison of the knowledge base and research front of IS 2006-2010 suggests a continuing decline of the IR systems specialty in the near future, but also a considerable (re)growth of the webometrics area after a period of decline from 2001 to 2005 and 2006 to 2010, with the latter due perhaps in part to its contribution to an emerging web science.
  
  Themenfeld: Informetrie
  Wissenschaftsfach: Informationswissenschaft
  
  
• 4
  Zhao, D. ; Strotmann, A.: In-text author citation analysis : feasibility, benefits, and limitations.
  In: Journal of the Association for Information Science and Technology. 65(2014) no.11, S.2348-2358.
  
  Abstract: This article explores the feasibility, benefits, and limitations of in-text author citation analysis and tests how well it works compared with traditional author citation analysis using citation databases. In-text author citation analysis refers to author-based citation analysis using in-text citation data from full-text articles rather than reference data from citation databases. It has the potential to help with the application of citation analysis to research fields such as the social sciences that are not covered well by citation databases and to support weighted citation and cocitation counting for improved citation analysis results. We found that in-text author citation analysis can work as well as traditional citation analysis using citation databases for both author ranking and mapping if author name disambiguation is performed properly. Using in-text citation data without any author name disambiguation, ranking authors by citations is useless, whereas cocitation analysis works well for identifying major specialties and their interrelationships with cautions required for the interpretation of small research areas and some authors' memberships in specialties.
  
  Themenfeld: Informetrie
  
  
• 5
  Luo, C. ; Zhao, D. ; Qi, D.: China's road to RDA.
  In: Cataloging and classification quarterly. 52(2014) no.6/7, S.585-599.
  
  Abstract: With its brand-new structure and stated advantages, Resource Description and Access (RDA) is intended to be the new international standard of cataloging in the digital world. The Chinese library community has been devoted to analyzing RDA and discussing its implementation. This article introduces the current status of RDA studies in China including achievements of RDA research in recent years and China's attitudes toward RDA's implementation. This article also analyzes challenges for RDA's launch in China and provides suggestions for its localization in China.
  
  Anmerkung: Contribution in a special issue "RDA around the world"
  
  Themenfeld: Formalerschließung
  Objekt: RDA
  Land/Ort: China
  
  
• 6
  Strotmann, A. ; Zhao, D.: Author name disambiguation : what difference does it make in author-based citation analysis?.
  In: Journal of the American Society for Information Science and Technology. 63(2012) no.9, S.1820-1833.
  
  Abstract: In this article, we explore how strongly author name disambiguation (AND) affects the results of an author-based citation analysis study, and identify conditions under which the traditional simplified approach of using surnames and first initials may suffice in practice. We compare author citation ranking and cocitation mapping results in the stem cell research field from 2004 to 2009 using two AND approaches: the traditional simplified approach of using author surname and first initial and a sophisticated algorithmic approach. We find that the traditional approach leads to extremely distorted rankings and substantially distorted mappings of authors in this field when based on first- or all-author citation counting, whereas last-author-based citation ranking and cocitation mapping both appear relatively immune to the author name ambiguity problem. This is largely because Romanized names of Chinese and Korean authors, who are very active in this field, are extremely ambiguous, but few of these researchers consistently publish as last authors in bylines. We conclude that a more earnest effort is required to deal with the author name ambiguity problem in both citation analysis and information retrieval, especially given the current trend toward globalization. In the stem cell research field, in which laboratory heads are traditionally listed as last authors in bylines, last-author-based citation ranking and cocitation mapping using the traditional approach to author name disambiguation may serve as a simple workaround, but likely at the price of largely filtering out Chinese and Korean contributions to the field as well as important contributions by young researchers.
  
  Themenfeld: Informetrie
  
  
• 7
  Zhao, D. ; Strotmann, A.: Counting first, last, or all authors in citation analysis : a comprehensive comparison in the highly collaborative stem cell research field.
  In: Journal of the American Society for Information Science and Technology. 62(2011) no.4, S.654-676.
  
  Abstract: How can citation analysis take into account the highly collaborative nature and unique research and publication culture of biomedical research fields? This study explores this question by introducing last-author citation counting and comparing it with traditional first-author counting and theoretically optimal all-author counting in the stem cell research field for the years 2004-2009. For citation ranking, last-author counting, which is directly supported by Scopus but not by ISI databases, appears to approximate all-author counting quite well in a field where heads of research labs are traditionally listed as last authors; however, first author counting does not. For field mapping, we find that author co-citation analyses based on different counting methods all produce similar overall intellectual structures of a research field, but detailed structures and minor specialties revealed differ to various degrees and thus require great caution to interpret. This is true especially when authors are selected into the analysis based on citedness, because author selection is found to have a greater effect on mapping results than does choice of co-citation counting method. Findings are based on a comprehensive, high-quality dataset extracted in several steps from PubMed and Scopus and subjected to automatic reference and author name disambiguation.
  
  Themenfeld: Informetrie
  Wissenschaftsfach: Molekularbiologie
  
  
• 8
  Wei, J. ; Zhao, D. ; Liang, L.: Estimating the growth models of news stories on disasters.
  In: Journal of the American Society for Information Science and Technology. 60(2009) no.9, S.1741-1755.
  
  Abstract: Understanding the growth models of news stories on disasters is a key issue for efficient disaster management. This article proposes a method to identify three growth models: the Damped Exponential Model, the Normal Model, and the Fluctuating Model. This method is proven to be valid using the 112 disasters occurring between 2003 and 2008. The factors that influence the likelihood of the growth models include disaster types, newsworthy material, disaster severity, and economic development of the affected area. This article suggests that disaster decision-makers can identify the respective likelihood of the three growth models of news stories when a disaster happens, and thereby implement effective measures in response to the disaster situation.
  
  
  
• 9
  Zhao, D. ; Strotmann, A.: Information science during the first decade of the web : an enriched author cocitation analysis.
  In: Journal of the American Society for Information Science and Technology. 59(2008) no.6, S.916-937.
  
  Abstract: Using an enriched author cocitation analysis (ACA), we map information science (IS) for 1996-2005, a decade of explosive development of the World Wide Web, to examine its development since the landmark study by White and McCain (1998). The Web, we find, has had a profound impact on IS, driving the creation of new disciplines and revitalization or obsolescence of old, and most importantly, bridging the chasm between the literatures and retrieval IS camps. Simultaneously, the development of IS towards cognitive aspects has intensified. Our study enriches classic ACA in that it employs both orthogonal and oblique rotations in the factor analysis (FA), and reports both pattern and structure matrices for the latter, thus enabling a comparison between these several FA methods in ACA. Each method provides interesting information not available from the others, we find, especially when results are also visualized in the novel manner we introduce here.
  
  Themenfeld: Informetrie
  Wissenschaftsfach: Informationswissenschaft
  Objekt: WWW
  
  
• 10
  Zhao, D. ; Strotmann, A.: Evolution of research activities and intellectual influences in information science 1996-2005 : introducing author bibliographic-coupling analysis.
  In: Journal of the American Society for Information Science and Technology. 59(2008) no.13, S.2070-2086.
  
  Abstract: Author cocitation analysis (ACA) has frequently been applied over the last two decades for mapping the intellectual structure of a research field as represented by its authors. However, what is mapped in ACA is actually the structure of intellectual influences on a research field as perceived by its active authors. In this exploratory paper, by contrast, we introduce author bibliographic-coupling analysis (ABCA) as a method to map the research activities of active authors themselves for a more realistic picture of the current state of research in a field. We choose the information science (IS) field and study its intellectual structure both in terms of current research activities as seen from ABCA and in terms of intellectual influences on its research as shown from ACA. We examine how these two aspects of the intellectual structure of the IS field are related, and how they both developed during the first decade of the Web, 1996-2005. We find that these two citation-based author-mapping methods complement each other, and that, in combination, they provide a more comprehensive view of the intellectual structure of the IS field than either of them can provide on its own.
  
  Themenfeld: Informetrie
  Wissenschaftsfach: Informationswissenschaft
  
  
• 11
  Zhao, D. ; Strotmann, A.: Can citation analysis of Web publications better detect research fronts?.
  In: Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1285-1302.
  
  Abstract: We present evidence that in some research fields, research published in journals and reported on the Web may collectively represent different evolutionary stages of the field, with journals lagging a few years behind the Web on average, and that a "two-tier" scholarly communication system may therefore be evolving. We conclude that in such fields, (a) for detecting current research fronts, author co-citation analyses (ACA) using articles published on the Web as a data source can outperform traditional ACAs using articles published in journals as data, and that (b) as a result, it is important to use multiple data sources in citation analysis studies of scholarly communication for a complete picture of communication patterns. Our evidence stems from comparing the respective intellectual structures of the XML research field, a subfield of computer science, as revealed from three sets of ACA covering two time periods: (a) from the field's beginnings in 1996 to 2001, and (b) from 2001 to 2006. For the first time period, we analyze research articles both from journals as indexed by the Science Citation Index (SCI) and from the Web as indexed by CiteSeer. We follow up by an ACA of SCI data for the second time period. We find that most trends in the evolution of this field from the first to the second time period that we find when comparing ACA results from the SCI between the two time periods already were apparent in the ACA results from CiteSeer during the first time period.
  
  Themenfeld: Citation indexing ; Informetrie
  Objekt: Science Citation Index ; CiteSeer
  
  
• 12
  Zhao, D.: Challenges of scholarly publications on the Web to the evaluation of science : a comparison of author visibility on the Web and in print journals.
  In: Information processing and management. 41(2005) no.6, S.1403-1418.
  
  Abstract: This article reveals different patterns of scholarly communication in the XML research field on the Web and in print journals in terms of author visibility, and challenges the common practice of exclusively using the ISI's databases to obtain citation counts as scientific performance indicators. Results from this study demonstrate both the importance and the feasibility of the use of multiple citation data sources in citation analysis studies of scholarly communication, and provide evidence for a developing "two tier" scholarly communication system.
  
  Anmerkung: Beitrag in einem "Special Issue on Infometrics"
  
  Themenfeld: Informetrie ; Citation indexing ; Elektronisches Publizieren
  
  
• 13
  Zhao, D.G. ; Ramsden, A.: Report on the ELINOR electronic library project.
  In: Information services and use. 15(1995) no.3, S.199-212.
  
  Abstract: A pilot system was implemented in 1993. The pilot system is now being extended in terms of the subject coverage and network access. Covers the user aspect, the system architecture and copyright management of the ELINOR (Electronic Library INformation Online Retrieval) electronic library
  
  Themenfeld: Rechtsfragen
  Objekt: ELINOR
  
  
• 14
  Wu, Z. ; Zhao, D. ; Ramsden, A.: From automated library to electronic library : challeneges for infromation retrieval.
  In: Information retrieval: new systems and current research. Proceedings of the 15th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Glasgow 1993. Ed.: Ruben Leon. London : Taylor Graham, 1994. S.24-38.
  
  Abstract: Describes the development of the electronic library project: ELINOR (Electronic Library INformation Online Retrieval); by the Information Centre, De Montfort University at Milton Keynes. The pilot phase is working towards the creation of a text and image database of books, periodicals and course materials by using the latest document image processing (DIP) technologies. The transition from automated libraries to electronic libraries brings new challenges to information retrieval. Concludes that the important problems affecting information retrieval in electronic libraries include document interchange standards, identification of appropriate indexing strategies, online text and image viewing and text retrieval from distributed databases
  
  Objekt: ELINOR
  
  
• 15
  Ramsden, A. ; Wu, Z. ; Zhao, D.G.: ¬The pilot phase of the ELINOR Electronic Library Project, March 1992-April 1994.
  London : British Library, 1994. 107 S.
  (BLRD report; 6137)
  
  Abstract: Describes the ELINOR (Electronic Library INformation Online Retrieval) Electronic Library Project, at De Montfort University, UK, which aims to convert library primary materials and course documents to electronic form and to make the full text documents accessible to teaching staff and students in an electronic workstation environment. This pilot phase of the ELINOR Electronic Library Project demonstrated the feasibility of collecting electronic documents for 1 undergraduate course, BA/BSc Business Information Systems (BIS), and the benefits of optical character recognition (OCR) and scanning and document image processing (DIP) techniques in a client server environment. A key feature of the project was the negotiation of short term licences from 11 publishers for 53 textbooks. Publishers were prepared to participate in the project to provide useful early experience in copyright management on small scale
  
  Objekt: ELINOR
  Land/Ort: GB
  
  
• 16
  Ramsden, A. ; Zimin, W. ; Zhao, D.: Selection criteria for a document image processing system for the ELINOR electronic library project.
  In: Program. 27(1993) no.4, S.371-387.
  
  Abstract: The information centre at De Montfort University, Milton Keynes is carrying out a 3 year research project known as the Electronic Library Project or ELINOR which will work towards the creation of a large, indexed collection of electronic texts and images accessible to the students and staff via desktop workstations. The pilot phase will build on the existing information network and use the latest document image processing and text retrieval technologies to set up a central and secure location for the data. Outlines the investigative stages in evaluation and selecting a DIP system and the shortcomings of using a commercial DIP system for electronic libraries
  
  Objekt: ELINOR