Search (6 results, page 1 of 1)

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Abstract

This chapter shows that the wider use of Web search engines, reconsidering the theoretical and methodological frameworks to grasp new information practices. Beginning with an overview of the recent challenges implied by the dynamic nature of the Web, this chapter then traces the information behavior related concepts in order to present the different approaches from the user perspective. The authors pay special attention to the concept of "information practice" and other related concepts such as "use", "activity", and "behavior" largely used in the literature but not always strictly defined. The authors provide an overview of user-oriented studies that are meaningful to understand the different contexts of use of electronic information access systems, focusing on five approaches: the system-oriented approaches, the theories of information seeking, the cognitive and psychological approaches, the management science approaches, and the marketing approaches. Future directions of work are then shaped, including social searching and the ethical, cultural, and political dimensions of Web search engines. The authors conclude considering the importance of Critical theory to better understand the role of Web Search engines in our modern society.

Date

20. 4.2012 13:22:37

Source

Next generation search engines: advanced models for information retrieval. Eds.: C. Jouis, u.a

Type

a

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Abstract

In this paper, we present the CODEX project which aims at designing a system for ETDs access based on a XML architecture. XML offers a possible delivery format for controlled vocabularies. It can also be used as an alternative to offer a single interface to the different controlled vocabularies and classification systems. We use these XML facilities to implement a system based on the authorial indexes as a browsing tool. 1. Introduction The widespread use of the Web among the scolarship community and the increasing avaibility of thesis as electronic documents raise new opportunities for a wider dissemination of large scientific documents in electronic form. The true benefit of an ETD (Electronic Thesis and Dissertation) digital library, however, comes not from the replication of traditional library functions, but rather from the ability to make possible tasks that would not be possible outside the electronic environment, such as the hypertextual linking of related texts, full text searching of holdings, and the integration of filtering information tools and data visualisation. Large corpora of ETDs on the Web also gives the researchers a new environment to consider the question of knowledge classification and organization. As a matter of fact, the question of information structuration within the ETDs and, specifically, the matching process between the document produced by the author and the informational need that may have a reader has been renewed by the use of new techniques of classification and description. Different strategies are available to access the information contained in ETDs. Classical - even not easy to implement - ones are based an classifications, thesaurus or ontologies which give the user (i.e., the reader) keys to go in the informational nodules at different levels of granularity. These strategies share the fact that they all are pre-defined views of a knowledge domain. Pre-defined views are also tools which are all conceived by library and information science professionals who share some common concerns - at least practical if not cultural - about what is a representation. In this context, readers need to access the information in the documents via these pre-defined representation tools.

Type

a

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Abstract

Analysis of research to date on improving subject access by including contents tables in bibliographic records. Results indicate the need for clear methodology (criteria for selecting notoces for enrichment, manual and semi automated methods, cost). Evaluations, based on recall, precision and rate of circulation, indicate manifest benefits, especially in virtual libraries where information is superabundant; but enrichment is a complex process

Type

a

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Abstract

This paper reports on an evaluation of the browsing behaviour of end users of a WWW-OPAC focussing on the browsing relevance feedback (BRF) strategy. Results of this study reveal that BRF is a popular strategy. We also find that the relationships involved in the BRF strategy are generally syntagmatic

Type

a

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Abstract

The paradigm shift from the old system centered view to a user centered approach involves new tools needed for accessing library resources under the condition that the user's needs are taken into account. An end-user, who has only a little knowledge of classification systems or thesauri, understands little of the mode of the representation of contents and the use of authority lists. In addition, he will have difficulty in formulating his question in a precise manner. He needs to know better what the library proposes in order to define of what use it would be for him. Many studies have been carried out on the use of controlled vocabularies (classification, authority lists, thesauri) as searching devices. It is surprising to find that relatively little attention has been given to the role of these tools in filtering and browsing processes. We have developed a prototype named CATHIE (CATalog Hypertextuel Interactif et Enrichi) that supports such filtering and interactive reformulation features

Type

a

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Type

a