No abstract

The Pathfinder algorithm is widely used to prune social networks. The pruning maintains the geodesic distances between nodes. It has shown itself to be very useful in the analysis of, amongst others, citations in BIS (bibliometrics, informetrics, and scientometrics). It has even been proposed for the online display of the search results in an information retrieval system. However, its great time and space complexity limits its use in real-time applications and in networks of any considerable size.The present work describes an improved algorithm with considerably reduced time and space complexity. Its lower execution costs thus increase its applicability both in real time and to large networks.

There have been many attempts to evaluate Web spaces on the basis of the information that they provide, their form or functionality, or even the importance given to each of them by the Web itself. The indicators that have been developed for this purpose fall into two groups: those based on the study of a Web space's formal characteristics, and those related to its link structure. In this study we examine most of the webometric indicators that have been proposed in the literature together with others of our own design by applying them to a set of thematically related Web spaces and analyzing the relationships between the different indicators.

Purpose -To show how the double nature of audiovisual material, that it is viewed and referenced, is reflected at the access points of a documentary database. Design/methodology/approach -To achieve this aim a journey through the indexation elements -supported by explanatory examples -is undertaken, so as to identify and analyze onomastic, thematic, geographical and chronological aspects. Findings -The findings reveal the need to identify in indexation the elements viewed in the image track and referenced in the sound track; such a need is supported by user/journalist requests, so that the documentation service is adapted to such information needs. Research limitations -The management method displayed is only valid for medium and large television companies. This derives from the complexity and cost of human resources and time dedicated. Practical implications -The practical value lies in the fact that the best proven structure for indexation of TV audiovisual documents is shown, with this being a useful and agile guide for the implantation of information services. Originality/value -There are few studies that develop the documentation management of audiovisual documents, of those that count on valid work that stems from the study of indexation in television.

Recibido: 12 de noviembre de 2016 / Aceptado: 4 de diciembre de 2016 DOI:Resumen: El presente trabajo tiene como objetivo el mostrar los principales problemas derivados de la falta de digitalización de la totalidad o parte de las colecciones audiovisuales televisivas, lo cual se complica cuanto más volumen de contenidos cuenta la cadena y cuanto mayor es su antigüedad, y por lo tanto, más complejo de digitalizar son los soportes documentales. Se analiza el proceso de migración de formatos analógicos a digital desde diversos puntos de vista tales como de la conservación, seguridad e integridad documental, difusión de contenidos, etc., todo ello analizando el cambio de paradigma en las cadenas de televisión, generado por los cambios en la emisión y producción, y en la integración del departamento de gestión documental en los Media Asset Management, lo cual se ha traducido en que las colecciones audiovisuales han dejado de ser depósito a ser contenidos puesto a disposición del usuario e integrado en el corazón del sistema de producción de la cadena. Palabras clave: Colecciones audiovisual, paradigma digital, digitalización, información audiovisual televisiva. gestión documental [en] Audio-visual files without digitizing? Safety, perservation and amortization Abstract: This paper aims to show the main problems arising from the lack of digitizing all or part of television audiovisual collections, which contained the more volume to the chain and the greater antiquity is complicated, and at so complex are the documentaries digitizing media. The migration of analog to digital formats is analyzed from various viewpoints such as conservation, safety and integrity documentary, broadcast content, etc., all analyzing the paradigm shift in the television, generated by the changes in the broadcasting and production, and the integration of document management department in the Media Asset Management, which has resulted in the audiovisual collections no longer be contained tank made available to the user and integrated into the heart production system chain.