This book constitutes the refereed proceedings of the 15th Information Retrieval Technology Conference, AIRS 2019, held in Hong Kong, China, in November 2019.Th

In order to be effective for their users, information retrieval (IR) systems should be adapted to the specific needs of particular environments. The huge and gr

The wealth of information accessible on the Internet has grown exponentially since its advent. This mass of content must be systemically sifted to glean pertine

The growth of the Internet and the availability of enormous volumes of data in digital form have necessitated intense interest in techniques to assist the user