In this paper, we explore how to generate groups of closely related words that imitate entries in a manually created thesaurus. This is done using words from a number of different sources. The quality of the generated list as compared to the thesaurus is judged using a variety of metrics.

This paper describes the process of mapping, translation and publication in SKOS format of the RA Thesaurus, a terminological tool developed by the Italian Ministry of Cultural Heritage (MiBACT) as a part of the official documentation used for the recording of archaeological finds. In particular, the RA Thesaurus is intended to provide unified and meaningful terminology for the description of a...

This study explored how experts and novices in pedagogics expanded queries supported by the ERIC thesaurus, and how this was connected to the search success in an easy and a difficult search task. The expert group consisted of 15 undergraduates in pedagogy and the novice group of 15 students with no studies in this field. Their search logs were recorded and a preand post-search interview was co...

We describe an interface that uses the phrases occurring in a document collection as a basis for browsing the collection and accessing its contents. Phrases are automatically extracted from the document text to represent the subject matter of the collection. Clearly, the interface’s utility depends on how good these phrases are. We evaluate the system by comparing the phrases extracted from a l...

Thesauri have been important information and knowledge organisation tools for more than three decades. The recent emergence and phenomenal growth of the World Wide Web has created new opportunities to introduce thesauri as information search and retrieval aids to end user communities. While the number of web-based and hypertextual thesauri continues to grow, few investigations have yet been car...

The main approach to get into these objectives is to define an ontology algebra to deal with the main object type (ontologies) but as well other objects we will want to reuse (thesauri, taxonomies and word lists). This ontology algebra includes these major operators: • translation: add a new language to a thesaurus which does not include it; • inversion: take a thesaurus which has a specific ba...

The National Cancer Institute has developed the NCI Thesaurus, a biomedical vocabulary that provides consistent, unambiguous codes and definitions for concepts used in cancer research. It currently has about 34,000 concepts, in 20 hierarchies. A lexical component provides human usable definition and other information. Description logic is used to ensure complete, consistent and non-redundant de...