Search (55 results, page 2 of 3)

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Abstract

Indexing and abstracting are not activities that should be looked upon as ends in themselves. It is the results of these activities that should be evaluated and this can only be done within the context of a particular database, whether in printed or machine-readable form. In this context, the indexing can be judged successful if it allows searchers to locate items they want without having to look at many they do not want. This book intended primarily as a text to be used in teaching indexing and abstracting of Library and information science. It is an immense value to all individuals and institutions involved in information retrieval and related activities, including librarians, managers of information centres and database producers.

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Source

Journal of education for library and information science. 36(1995) no.2, S.170-173

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Source

Information, knowledge, evolution. Proceedings of the 44th FID Congress, Helsinki, 28.8.-1.9.1988. Ed. by S. Koshiala and R. Launo

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Abstract

Based on the salient features of the documents, automatic text summarization systems extract the key sentences from source documents. This process supports the users in evaluating the relevance of the extracted documents returned by information retrieval systems. Because of this tool, efficient filtering can be achieved. Indirectly, these systems help to resolve the problem of information overloading. Many automatic text summarization systems have been implemented for use with different languages. It has been established that the grammatical and lexical differences between languages have a significant effect on text processing. However, the impact of the language differences on the automatic text summarization systems has not yet been investigated. The authors provide an impact analysis of language difference on automatic text summarization. It includes the effect on the extraction processes, the scoring mechanisms, the performance, and the matching of the extracted sentences, using the parallel corpus in English and Chinese as the tested object. The analysis results provide a greater understanding of language differences and promote the future development of more advanced text summarization techniques.

Footnote

Beitrag einer special topic section on multilingual information systems

Source

Journal of the American Society for Information Science and Technology. 57(2006) no.5, S.684-696

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Abstract

Despite their changing role, abstracts remain useful in the digital world. Aimed at both information professionals and researchers who work and publish in different fields, this book summarizes the most important and up-to-date theory of abstracting, as well as giving advice and examples for the practice of writing different kinds of abstracts. The book discusses the length, the functions and basic structure of abstracts. A new approach is outlined on the questions of informative and indicative abstracts. The abstractors' personality, their linguistic and non-linguistic knowledge and skills are also discussed with special attention. The process of abstracting, its steps and models, as well as recipient's role are treated with special distinction. Abstracting is presented as an aimed (purported) understanding of the original text, its interpretation and then a special projection of the information deemed to be worth of abstracting into a new text.Despite the relatively large number of textbooks on the topic there is no up-to-date book on abstracting in the English language. In addition to providing a comprehensive coverage of the topic, the proposed book contains novel views - especially on informative and indicative abstracts. The discussion is based on an interdisciplinary approach, blending the methods of library and information science and linguistics. The book strives to a synthesis of theory and practice. The synthesis is based on a large and existing body of knowledge which, however, is often characterised by misleading terminology and flawed beliefs.

Series

Chandos information professional series

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Abstract

Compares formats and linguistic devices of German abstracts and their English equivalents, written by German medical scholars to English native speakers. The source is 20 abstracts taken from German medical journals representing different degrees of specialism. The analysis includes: the overall length of articles/abstracts; the representation/arrangement of sections; the linguistic devices. Results show no correlation between the length of articles and the length of abstracts. In contrast to native speaking author abstracts, 'background information' predominated in the structure of the studied German non-native speaker abstracts, whereas 'purpose of study' and 'conclusions' were not clearly stated. In linguistic terms, the German abstracts frequently contained lexical hegdes, complex and enumerating sentence structure; passive voice and post tense as well as various types of linking structures

Source

Information processing and management. 31(1995) no.5, S.769-776

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Abstract

Clear guidelines have been provided for structuring the abstracts of original research and review articles and, in the past 10 years, several major medical periodicals have adopted the policy of including such abstracts with all their articles. A review of the literature reveals that proponents claim that structured abstracts enhance peer review, improve information retrieval, and ease critical appraisal. However, some periodicals have not adopted structured abstracts and their opponents claim that they make articles longer and harder to read and restrict author originality. Concludes that previous research on structured abstracts focused on how closely they followed prescribed structure and include salient points of the full text, rather than their role in increasing the usefulness of the article

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Abstract

The library and information science (LIS) literature on abstracting makes little mention about abstracting conducted in the corporate / business environment, whereas the business literature suggests that abstarcting is a very important component of business writing. Examines a variety of publications from LIS and business in order to compare and contrast their approaches to the following aspects of abstracting: definitions of abstracts; types of abstracts; purpose of abstracts; and writing of abstracts. Summarises the results of the examination which revealed a number of similarities, differences, and inadequacies in the ways in which both fields approach abstracting. Concludes that both fields need to develop more detailed guidelines concerning the cognitive process of abstracting and suggests improvements to the training af absractors based on these findings

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Abstract

Public library catalogues in early twentieth-century Britain frequently included annotations, either to clarify obscure titles or to provide further information about the subject-matter of the books they described. Two manuals giving instruction on how to do this were published at that time. Following World War I, with the decline of the printed catalogue, this kind of annotation became rarer, and was almost confined to bulletins of new books. The early issues of the British National Bibliography included some annotations in exceptional cases. Parallels are drawn with the provision of table-of-contents information in present-day OPAC's.

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Abstract

Previous research assessing the effectiveness of structured abstracts has been limited in two respects. First, when comparing structured abstracts with traditional ones, investigators usually have rewritten the original abstracts, and thus confounded changes in the layout with changes in both the wording and the content of the text. Second, investigators have not always included the title of the article together with the abstract when asking participants to judge the quality of the abstracts, yet titles alert readers to the meaning of the materials that follow. The aim of this research was to redress these limitations. Three studies were carried out. Four versions of each of four abstracts were prepared. These versions consisted of structured/traditional abstracts matched in content, with and without titles. In Study 1, 64 undergraduates each rated one of these abstracts on six separate rating scales. In Study 2, 225 academics and research workers rated the abstracts electronically, and in Study 3, 252 information scientists did likewise. In Studies 1 and 3, the respondents rated the structured abstracts significantly more favorably than they did the traditional ones, but the presence or absence of titles had no effect on their judgments. In Study 2, no main effects were observed for structure or for titles. The layout of the text, together with the subheadings, contributed to the higher ratings of effectiveness for structured abstracts, but the presence or absence of titles had no clear effects in these experimental studies. It is likely that this spatial organization, together with the greater amount of information normally provided in structured abstracts, explains why structured abstracts are generally judged to be superior to traditional ones.

Source

Journal of the American Society for Information Science and Technology. 58(2007) no.14, S.2335-2340

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Abstract

The international standard ISO 214:1976 defines an abstract as "an abbreviated, accurate representation of the contents of a document" (p. 1) that should "enable readers to identify the basic content of a document quickly and accurately to determine relevance" (p. 1). It also should be useful in computerized searching. The ISO standard suggests including the following elements: purpose, methods, results, and conclusions. Researchers have often challenged this structure and found that different disciplines and cultures prefer different information content. These claims are partially supported by the findings of our research into the structure of pharmacology, sociology, and Slovenian language and literature abstracts of papers published in international and Slovenian scientific periodicals. The three disciplines have different information content. Slovenian pharmacology abstracts differ in content from those in international periodicals while the differences between international and Slovenian abstracts are small in sociology. In the field of Slovenian language and literature, only domestic abstracts were studied. The identified differences can in part be attributed to the disciplines, but also to the different role of journals and papers in the professional society and to differences in perception of the role of abstracts. The findings raise questions about the structure of abstracts required by some publishers of international journals.

Source

Journal of the American Society for Information Science and Technology. 59(2008) no.9, S.1420-1432

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Abstract

While it is easy to identify whether someone has found a piece of information during a search task, it is much harder to measure how much someone has learned during the search process. Searchers who are learning often exhibit exploratory behaviors, and so current research is often focused on improving support for exploratory search. Consequently, we need effective measures of learning to demonstrate better support for exploratory search. Some approaches, such as quizzes, measure recall when learning from a fixed source of information. This research, however, focuses on techniques for measuring open-ended learning, which often involve analyzing handwritten summaries produced by participants after a task. There are two common techniques for analyzing such summaries: (a) counting facts and statements and (b) judging topic coverage. Both of these techniques, however, can be easily confounded by simple variables such as summary length. This article presents a new technique that measures depth of learning within written summaries based on Bloom's taxonomy (B.S. Bloom & M.D. Engelhart, 1956). This technique was generated using grounded theory and is designed to be less susceptible to such confounding variables. Together, these three categories of measure were compared by applying them to a large collection of written summaries produced in a task-based study, and our results provide insights into each of their strengths and weaknesses. Both fact-to-statement ratio and our own measure of depth of learning were effective while being less affected by confounding variables. Recommendations and clear areas of future work are provided to help continued research into supporting sensemaking and learning.

Source

Journal of the American Society for Information Science and Technology. 64(2013) no.2, S.291-306

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Abstract

As a result of the transition to full-text storage, multimedia and networking, information systems are becoming more efficient but at the same time more difficult to use, in particular because users are confronted with information volumes that increasingly exceed individual processing capacities. Consequently, there is an increase in the demand for user aids such as summarising techniques. Against this background, the interdisciplinary Dagstuhl Seminar 'Summarising Text for Intelligent Communication' (Dec. 1993) outlined the academic state of the art with regard to summarising (abstracting) and proposed future directions for research and system development. Research is currently shifting its attention from text summarising to summarising states of affairs. Recycling solutions are put forward in order to satisfy short-term needs for summarisation products. In the medium and long term, it is necessary to devise concepts and methods of intelligent summarising which have a better formal and empirical grounding and a more modular organisation

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Source

British librarianship and information work 1986-1990. Ed. by D. Bromley and A.M. Allott

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Abstract

Die Qualität der Dokumentenanlyse entscheidet über die Wirksamkeit eines Dokumentationsvorhabens, denn Auswahl und Darstellung von Informationselementen bilden die Grundlage zum Wiederfinden des dokumentierten Wissens. Kurzreferate informieren über den Inhalt einer Veröffentlichung. Verschiedene Typen von Inhaltsangaben werden entsprechend der DIN 1426 vorgestellt, Vorschriften und Anweisungen an Referate werden analysiert und die Bewertung der Qualität von Kurzreferaten diskutiert. Das zunehmende Wissen über den Aufbau und das Information Retrieval von Faktendatenbanken führt zu der Schlußfolgerung, daß über die verbale Kurzdarstellung des Dokumenteninhalts hinaus Fakten extrahiert und in speziellen Datenbanken gespeichert werden sollten

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Source

Journal of the American Society for Information Science. 46(1995) no.3, S.225-234

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Abstract

The indexing process consists of the comprehension of the document to be indexed, followed by the production of a set of index terms. Differences between academic indexing and back-of-the-book indexing are discussed. Text comprehension is a branch of human information processing, and it is argued that the model of text comprehension and production debeloped by van Dijk and Kintsch can form the basis for a cognitive process model of indexing. Strategies for testing such a model are suggested

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Abstract

Attempts to explain the intellectual and cognitive processes which govern the understanding and structure of a text, on the one hand, and writing a summary or abstract on the other, based on the literature of information science, education, cognitive psychology and psychiatry

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Series

Library and information science

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