Paper Title
Expert Systems in Information Retrieval Review: Classification, Indexation, and Abstraction

Abstract
Artificial intelligence emerged as a result of the experiences, experiments, and research of many thinkers and researchers, which aims to provide all that the individual desires of information and very advanced programs that enable the achievement of the best works of all kinds it is in Expert systems (ES) are a field of applied artificial intelligence (AI). Its first application ever was in 1960. The main objective was to transform human knowledge to computers to perform specific tasks. Experts and scientists used it to facilitate many operations in many fields such as the medical field, industry, and information management. Information experts started many projects and try in Indexation, abstracting, and classification. This study aims to evaluate the projects of expert systems in the field of information retrieval Keywords - Artificial Intelligence, Information Technology, Indexation, Classification, Abstraction.