Desde sus origenes la clasificacion de documentos en las bibliotecas y centros de documentacion ha tenido por objeto organizar las colecciones de manera que se agruparan los documentos con una tematica afin, con la finalidad de recuperarlos y facilitar la exploracion dentro de una materia. El reto para alcanzar este objetivo ha sido conjugar la adecuacion a modelos teoricos mas o menos estructurados de organizacion del conocimiento y las necesidades pragmaticas de organizacion de colecciones concretas. Se exponen de manera panoramica las caracteristicas de estos sistemas y su evolucion, desde sus origenes conocidos hasta las transformaciones que han supuesto su adaptacion tanto a los cambios de la tecnologia como a los usos de consumo de una informacion cada vez mas diversa por un publico, a su vez, mas heterogeneo.SISTEMAS DE CLASIFICACION BIBLIOGRAFICA / ORGANIZACION DEL CONOCIMIENTO / SISTEMAS FACETADOS / SISTEMAS JERARQUICOS / BUSQUEDA DE INFORMACION / BUSQUEDAS EXPLORATORIAS / CATALOGOS EN LINEA / WORLD WIDE WEBSince the begin, documents classification in Libraries and Information Centers has been to organize it into collections, so that the items are grouped with a related within a commun subject in order to retrieval and facilitate the searching into a singular topic. The challenge to achieving this objective has been to combine the refer theoretical models structured more or less into a knowledge organization, and a pragmatic organization needs of specific collections. We presents in this issue a panoramic overview about features and evolution of these kinds of systems, from its origins to the transformations which have involved its adaptation to the technology changes, as a customer of an increasingly diverse information, and a users more heterogeneous.LIBRARY CLASSIFICATION SYSTEMS / KNOWLEDGE ORGANIZATION / FACETED SYSTEMS / HIERARCHICAL SYSTEMS / INFORMATION SEARCHING / EXPLORATORY SEARCHING / ONLINE CATALOGS / WORLD WIDE WEB.

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Encabezamientos de materia en las bibliotecas españolas: perspectiva histórica y situación actual

Carmen Caro Castro Críspulo Travieso Rodríguez

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Proyectos internacionales de reforma y ampliación de las normas sobre tesauros para su adaptación a los nuevos contextos de integración e interoperabilidad en el entorno digital

Francisco Javier García Marco María del Carmen Agustín Lacruz Carmen Caro Castro José Ángel Martínez Usero Rosa San Segundo Manuel

The international projects for reforming and broadening the scope of the current technical guidelines and standards on thesauri are analyzed. Their aims are to recast the existing standards and guidelines, to adapt them to the new digital environment, and to specify their relation with other vocabulary control tools, making easier their interoperability. In this context, the mission, goals and methodology of the Committee 50’s taskforce on controlled vocabularies of the Spanish Standardization Association (AENOR) are presented. Its mission is promoting in the frame of the AENOR the adaptation of the Spanish standards on thesauri to the new international trends, following the work of the American initiative ANSI/NISO Z39.19-2005, and specially the more complete BS 8723, proposed by the British Standard Institute. According to this last one, the group aims are a) to reunify the standards on monolingual and multilingual thesauri —this is UNE 50106:1990, UNE 50106:1995 Erratum y UNE UNE 50125:1997— in a single one, comprising also the rest of the indexing languages, mainly subject headings, classifications and taxonomies; and b) to clarify the principles and tools among to interconnect the different languages among them and with the emerging field of computer ontologies. To achieve those aims, a working plan in four phases has been established: analysis of the international normative and technological context; cooperation with the British group in the revision of some parts of BS 8723; studying the appropriateness of adopting the norm BS 8723 as a UNE standard; and cooperating with the British group and other interested parts on the promotion of an ISO standard.

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Lenguajes documentales y exclusión social

Carmen Caro Castro Rosa San Segundo Manuel

Indexing languages should make the acces to information easier for every user creating a logical structure yhat improves the interaction with the system. But the analysis of the terms and semantic estructure of Encabezamientos de materia de la biblioteca universitaria de Sevilla and the Lista de encabezamientos de materia para las bibliotecas publicas shows that ideological criteria outweigh the logical ones. In addition, these criteria pose a discrimination against certain social groups.

Logical conjunction

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