Establishing paradigmatic relations between concepts in thesaurus on food and agriculture

Abstract

Results of a scientific research on updating the information retrieval thesaurus on food and agriculture developed in the Central Scientific Agricultural Library are presented. Advantages of the thesaurus as an artificial information retrieval language are shown. Basic functions of the thesaurus are support of indexing and unified information representing in the AGROS database and other information resources on AIC problems, reflection of scientific terminology and its normalization, reflection of paradigmatic relations between concepts (lexical units) of the thesaurus. The technique of inclusion of new concepts into the thesaurus is described. The paradigmatic relations existing in the thesaurus of the CSAL are described. The process of establishing the paradigmatic relations between terms and creating the hierarchical trees is shown. More than 5500 lexical units have been modified (added, changed, deleted) in 2017. New lexical units on veterinary science, horticulture, agricultural engineering, AIC economy, animal husbandry and plants protection were introduced. New version of the thesaurus contains 49659 LU, 32939 of which are descriptors and 16710 - ascriptors. More than 18200 LU are scientific (Latin) names of organisms (2116 of them are new).