Proposing a Plan to Compile IranDoc Meta-thesaurus based on the Model and Structure of the Unified Medical Language System (UMLS)

The purpose of this article is to present a plan to create coherence between thesauruses and specialized vocabulary compiled in IranDoc in the form of a meta-thesaurus. A meta-thesaurus is a cohesive combination of structured or controlled languages or compiled thesauruses and document lists that are obtained by linking, merging, and combining them. In this mechanism, in order to integrate the developed thesauri, each concept in a thesaurus is linked to the closest equivalent concept in other thesauri with the help of markers. In the process of communication between concepts, it is possible to translate the user query in the form of a systematic and comprehensive search of databases organized by various thesauruses and provides a platform for increasing comprehensiveness in information retrieval. In IranDoc, specialized thesauruses have been compiled in the 2001-2010 and updated in the years 2017-18. In addition, a collection of specialized dictionaries and vocabularies have been compiled and published. It is necessary to combine these words and thesauruses with each other in order to prevent the false loss of information in the search of Iran›s scientific database (Ganj) and to provide targeted access to specialized information. This article examines and analyzes various sources in the formation of meta-thesaurus in identifying related concepts, expressing the application and also the steps of its compilation.