University of Tehran Press Academic Librarianship and Information Research 2783-4638 40 45 2008 08 22 The Impact of New Terms on Changing the Structure of Thesauri: Case of ERIC Thesaurus The Impact of New Terms on Changing the Structure of Thesauri: Case of ERIC Thesaurus 21242 FA Mahdieh Mirzabeigy DR.Abbas Horri Journal Article 1970 01 01 The purpose of the present study is to explore the impact of new coming terms on the structure of the recent editions thesauri compared to the previous ones. The case of this research is the 14th and 13th editions of ERIC Thesaurus. The findings' indicate that the new terms affect the structure of thesaurus in terms of omission, change, or addition of the terms interrelations. But the highest Impact occurs on the hierarchical relations. The final results show that there can be found no correlation between the quantity and complexity of the changes occurred. The purpose of the present study is to explore the impact of new coming terms on the structure of the recent editions thesauri compared to the previous ones. The case of this research is the 14th and 13th editions of ERIC Thesaurus. The findings' indicate that the new terms affect the structure of thesaurus in terms of omission, change, or addition of the terms interrelations. But the highest Impact occurs on the hierarchical relations. The final results show that there can be found no correlation between the quantity and complexity of the changes occurred. https://jlib.ut.ac.ir/article_21242_5739001250f8f5fa27bd043102de342a.pdf