Search (43 results, page 1 of 3)

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Abstract

Dans d'autres cas, le profil de l'utilisateur peut être mal exploité pour extraire ou inférer ses nouveaux besoins en information. Ce problème est beaucoup plus accentué avec les requêtes ambigües. Lorsque plusieurs centres d'intérêt auxquels est liée une requête ambiguë sont identifiés dans le profil de l'utilisateur, le système se voit incapable de sélectionner les données pertinentes depuis ce profil pour répondre à la requête. Ceci a un impact direct sur la qualité des résultats fournis à cet utilisateur. Afin de remédier à quelques-unes de ces limitations, nous nous sommes intéressés dans ce cadre de cette thèse de recherche au développement de techniques destinées principalement à l'amélioration de la pertinence des résultats des SRIs actuels et à faciliter l'exploration de grandes collections de documents. Pour ce faire, nous proposons une solution basée sur un nouveau concept d'indexation et de recherche d'information appelé la projection multi-espaces. Cette proposition repose sur l'exploitation de différentes catégories d'information sémantiques et sociales qui permettent d'enrichir l'univers de représentation des documents et des requêtes de recherche en plusieurs dimensions d'interprétations. L'originalité de cette représentation est de pouvoir distinguer entre les différentes interprétations utilisées pour la description et la recherche des documents. Ceci donne une meilleure visibilité sur les résultats retournés et aide à apporter une meilleure flexibilité de recherche et d'exploration, en donnant à l'utilisateur la possibilité de naviguer une ou plusieurs vues de données qui l'intéressent le plus. En outre, les univers multidimensionnels de représentation proposés pour la description des documents et l'interprétation des requêtes de recherche aident à améliorer la pertinence des résultats de l'utilisateur en offrant une diversité de recherche/exploration qui aide à répondre à ses différents besoins et à ceux des autres différents utilisateurs. Cette étude exploite différents aspects liés à la recherche personnalisée et vise à résoudre les problèmes engendrés par l'évolution des besoins en information de l'utilisateur. Ainsi, lorsque le profil de cet utilisateur est utilisé par notre système, une technique est proposée et employée pour identifier les intérêts les plus représentatifs de ses besoins actuels dans son profil. Cette technique se base sur la combinaison de trois facteurs influents, notamment le facteur contextuel, fréquentiel et temporel des données. La capacité des utilisateurs à interagir, à échanger des idées et d'opinions, et à former des réseaux sociaux sur le Web, a amené les systèmes à s'intéresser aux types d'interactions de ces utilisateurs, au niveau d'interaction entre eux ainsi qu'à leurs rôles sociaux dans le système. Ces informations sociales sont abordées et intégrées dans ce travail de recherche. L'impact et la manière de leur intégration dans le processus de RI sont étudiés pour améliorer la pertinence des résultats.
However, this assumption does not hold in all cases, the needs of the user evolve over time and can move away from his previous interests stored in his profile. In other cases, the user's profile may be misused to extract or infer new information needs. This problem is much more accentuated with ambiguous queries. When multiple POIs linked to a search query are identified in the user's profile, the system is unable to select the relevant data from that profile to respond to that request. This has a direct impact on the quality of the results provided to this user. In order to overcome some of these limitations, in this research thesis, we have been interested in the development of techniques aimed mainly at improving the relevance of the results of current SRIs and facilitating the exploration of major collections of documents. To do this, we propose a solution based on a new concept and model of indexing and information retrieval called multi-spaces projection. This proposal is based on the exploitation of different categories of semantic and social information that enrich the universe of document representation and search queries in several dimensions of interpretations. The originality of this representation is to be able to distinguish between the different interpretations used for the description and the search for documents. This gives a better visibility on the results returned and helps to provide a greater flexibility of search and exploration, giving the user the ability to navigate one or more views of data that interest him the most. In addition, the proposed multidimensional representation universes for document description and search query interpretation help to improve the relevance of the user's results by providing a diversity of research / exploration that helps meet his diverse needs and those of other different users. This study exploits different aspects that are related to the personalized search and aims to solve the problems caused by the evolution of the information needs of the user. Thus, when the profile of this user is used by our system, a technique is proposed and used to identify the interests most representative of his current needs in his profile. This technique is based on the combination of three influential factors, including the contextual, frequency and temporal factor of the data. The ability of users to interact, exchange ideas and opinions, and form social networks on the Web, has led systems to focus on the types of interactions these users have at the level of interaction between them as well as their social roles in the system. This social information is discussed and integrated into this research work. The impact and how they are integrated into the IR process are studied to improve the relevance of the results.

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Abstract

Attempts to synthesize the findings of American writers of disparate viewpoints on the social phenomena of virtual environments. Travel in virtual communities is always accompanied by tension between the real and the virtual. By observing user behaviour, the authors under review are attempting to discover what happens on networks; how a community can form from a database; how rules, conventions and new cultures are formed; and the effects of virtual environments on personality

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Abstract

Reviews the theoretical and practical aspects of subject indexing with a view to the use of new information technologies. Discusses certain characteristics particular to records and to archival practices in their relationship to those aspects. Describes the successive operations of content analysis and translation into documentary languages that constitute the indexing process. Examines the development, use and appraisal of documentary lanyguages particularly descriptor based thesaurus

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Abstract

Account of a limited experimental study at the Bibliothèque Publique d'Informations (BPI), the Paris multimedia public library, to establish a methodology for investigating user interactions with new technology. A wide range of materials are available at the BPI, including CD-ROMs and the Internet. Preliminary observations indicate that users do not follow the pattern dictated by the machine, but take approaches based on their own experience and skills. Setbacks are generally interpreted as defects in the software, not personla failure to master the system. Large scale qualitative abservation, using research methods from the social sciences, would establish a knowledge base for developing user skills to exploit multimedia resources more fully

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Abstract

Classification is the natural response to a desire for order among objects and living things and classification systems have existed since time immemorial. Discusses culture and classification, and classification in a scientific and social sciences context, and states that the invention of writing has ensured that classification systems have been passed down through the generations. Discusses the role of cultural anthropology as developed by Dürkheim and Mauss and furthered byCclaude Levi-Strauss in shedding light on the phylogenetic dimension of classification

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Abstract

The library, centre of the local network of educational, social and cultural establishments, introduced its multimedia catalogue in 1994. Records assessed by graphic interfaces include all documents and supports: users can call up accompanying text, images, audiovisual extracts, using a series of simple menus. For the librarians, maintaining the catalogue, converting documents into digital form and creating links is time consuming and needs special skills, but the impact on collection use and enhancement of the library's image are considerable, while the availability of digital copies helps conserve fragile documents

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Abstract

The social sciences documentation centre (CDSH) of the French National Research Centre initiated the publication in 1988 of a psychology periodicals catalogue, Catalogue thématiques des revues de psychologie. Discusses the problems involved in setting up such a catalogue, with specific reference to deciding how a printed source can best complement its parent on-line data base: in this case, CDSH's PSYSIS. The decision to produce the catalogue has been largely precipitated by low uptake of the data base. Considerable attention has been given to delimiting coverage (French and foreign specialist periodicals, multi-disciplinary periodicals); defining descriptors (involving decisions about who the periodical is aimed at); and what information to include under each entry. The main problems, still to be solved, concern lack of adequate software (only a relational data base would be fully satisfactory); and inadequate information about user requirements from hard copy material as opposed to on-line data bases. The results of this preliminary evaluation, albeit tentative, are of considerable relevance to the delopment of strategies for diffusing information on scientific periodicals in general.

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Abstract

Describes a study of journal use by students using university libraries for the purpose of preparing theses i.e. students who are both users and producers of information. The research was undertaken by a multidisciplinary group of researchers from information science, communication, education and economic geography from the Laboratoire d'études et de recherches appliquées en science de la societé (Laboratory for study and applied research in social science). Outlines the hypotheses concerning the team work of research students and their growth in self sufficiency thorugh user training and the methodology of the survey. Analyzes the results in terms of frequency and duration of library visits, personal subscriptions to journals, satisfaction and dissatisfaction and the demand for user training

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Abstract

For users, the catalogue is a tool to assist in satisfying information demands. Bibliographic databases raise the question of how to describe a document to facilitate retrieval. Information technology development have led to the creation of hypercatalogues, affording links to related material and other services. This necessitates improved descriptive cataloguing and also improved search interfaces to simplify user manipulation, along the lines of the Web. Given the massive output of electronic documents, the librarian's role is to select, prioritise and organise. The information society and its consequent economic consequences for the social organisation of knowledge raise the prospect of marginalisation of libraries. Catalogues enable access to knowledge as a public good, but this access must be democratic

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Abstract

Report of a study at the University of Montreal (Quebec) analysing research on the behaviour of children using information technology (online databases, CD-ROM, computerised catalogues). From a range of publications covering 6-12 year olds in the US, Canada, Europe and Oceania common features were identified: (1) children's cognitive development does not match the structured approach required for this type of information research, (2) the main abrriers were physical (e.g. using keyboard), intellectual (no capacity for abstract reasoning) and social (little access to computers); (3) in terms of natural skills, boys has greater abilities than girls. Results indicate the need to make technology more appropriate for children, and train libarrians to recognise the real capacities and limitations of children so they can teach them the basic skills

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Source

Bulletin des bibliothèques de France. 34(1989) no.1, S.22-47

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Date

1. 8.1996 22:01:00

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Abstract

Compares the classification of entomological literature in the Dewey Decimal Classification and Library of Congress Classification systems. Argues that while LCC treats the subject in more depth especially with reference to entomological taxonomy, the arrangement in DDC proves to be more logical and gives greater consideration to natural evolution. DDC allows for a greater number of possibilities when considering the geographic distribution of insects and other aspects of their study

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Abstract

Describes the cooperative initiative in Lower Normandy to create a union catalogue of regional collections of heritage materials held by public libraries. Outlines the stages of the project including the feasibility study, partnership aspects, methodology, acquisition of equipment and recruitment of staff. The cooperative computerization of the catalogue and distribution by CD-ROM meets the needs of professionals and users

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Abstract

While official policy in France is to encourage access to CD-ROMs through public libraries and about 28 already have or plan to offer shortly a CD-ROM service either for loan or consultation the French press has been highly critical of the medium. Discusses problems of standardization; legal aspects, acquisition policies and selection aids and the advent of the DVD

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Date

1. 8.1996 22:01:00

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Date

1. 8.1996 22:01:00

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Date

1. 8.1996 22:01:00

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Date

1. 8.1996 22:01:00

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Source

Argus. 22(1993) no.2, S.21-29