descriptor
descriptor ; descriptor term ; epithet ; index term ; subject term ; catchword ; subject description ; index word.
Descriptors are terms which are acceptable for use in indexes to describe concepts.
The MEDLINE thesaurus, available online and ondisc, provides a complete list of all descriptor terms (i.e. the controlled vocabulary used in the subject indexing of all Medline citations).
He also allows Christian names accompanied by an epithet (Aunt Jane, for example) to be used as headings for the main entry.
This access is achieved by organising the tools so that a user may search under a specific access point or heading or index term, for example, subject term, author, name, title, date.
In alphabetical indexing languages, such as are embodied in thesauri and subject headings lists, subject terms are the alphabetical names of the subjects.
These summaries are a valuable aid to classification by ensuring that the classifier finds the correct discipline rather than a catchword in the index.
During searching the index user is expected to formulate headings in the same way, and hopefully to match his subject description with the indexer's description.
The Permuterm index (as featured in Science, and Social Sciences Citation Indexes) is similar to a Double-KWIC index in that it provides for simple coordination of index words.
búsqueda por descriptores
descriptor searching
Alternatively, others believe that descriptor searching is the best retrieval method for the databases.
descriptor auxiliar [Descriptor que sólo se puede usar junto con uno o más descriptores]
auxiliary descriptor
An auxiliary descriptor is a descriptor which may be used only together with one or more descriptors.
descriptor compuesto [Descriptor formado por varias palabras]
multi-word descriptor
Truncation is a useful feature; for example, when used with descriptors it will retrieve multi-word descriptors given the first word.
descriptor compuesto de varias palabras
multiple-word descriptor
Some phrases (for example, multiple-word descriptors) can be selected as phrases, with spaces between the words instead of proximity of operators.
descriptor del contenido
content descriptor
Responses (80%) indicate the superior quality of keywords, both as content descriptors and as retrieval tools.
descriptor de materia [En indización, cada una de las palabras clave significativas que expresan y representan el contenido de un documento]
subject descriptor
The indexer is required to select subject descriptors from the natural-language terms or phrases appearing in the headline or text of a newspaper article.
descriptor principal
major descriptor
For example, the ERIC database has three subject fields: major descriptors (mj), minor descriptors (mn), and identifiers (id).
descriptor propuesto [Palabra o grupo de palabras propuestas para su inclusión en un tesauro]
candidate descriptor
A candidate descriptor is a word or group of words proposed for possible inclusion in a thesaurus.
descriptor secundario
minor descriptor
For example, the ERIC database has three subject fields: major descriptors (mj), minor descriptors (mn), and identifiers (id).
indización por descriptores
descriptor indexing
First, a large number of databases that use descriptor indexing still avoid instructions for free-text retrieval.
lista de descriptores
index vocabulary
subject vocabulary
A classification scheme must therefore have an alphabetical index to serve as its entry vocabulary, leading us to the schedules which form the index vocabulary by means of the notation which forms the code vocabulary.
This system has an inbuilt thesaurus including the subject vocabulary in the field of employment protection and safety consisting of several thousand descriptors and synonyms.
materia representada por un solo descriptor [En indización, utilización de sólo descriptor para especificar la materia de un documento como, por ejemplo, "Catalogación"]
one-concept subject
Although elementary one-concept subjects are also represented in indexes constructed according to these methods, the problems that such subjects present are limited.
materia representada por varios descriptores [En indización, utilización de varios descriptores para especificar la materia de un documento como, por ejemplo, "Bibliotecas : Automatización"]
multi-concept subject
Much of this chapter therefore is concerned with the specification or retrieval of multi-concept subjects.
no descriptor [Término de un tesauro que no debe usarse para representar un concepto y que envía a uno o más descriptores que deben usarse en su lugar]
non-descriptor
Non-descriptors are terms which are not to be used in the index but which appear in the thesaurus in order to expand the entry vocabulary.
