Thematic description of audio-visual information on television

摘要

Purpose - This paper endeavours to show the possibilities for thematic description of audio-visualrndocuments for television with the aim of promoting and facilitating information retrieval.rnDesign/methodology/approach - To achieve these goals different database fields are shown, asrnwell as the way in which they are organised for indexing and thematic element description, analysedrnand used as an example. Some of the database fields are extracted from an analytical study of therndocumentary system of television in Spain. Others are being tested in university television on whichrnindexing experiments are carried out.rnFindings - Not all thematic descriptions are used on television information systems; nevertheless,rnsome television channels do use thematic descriptions of both image and sound, applying thesauri.rnMoreover, it is possible to access sequences using full text retrieval as well.rnOriginality/value - The development of the documentary task, applying the described techniques,rnpromotes thematic indexing and hence thematic retrieval. Given the fact that this is without doubt onernof the aspects most demanded by television journalists (along with people's names). Thisrnconceptualisation translates into the adaptation of databases to new indexing methods.