Modern society is characterized by permanent rapid and global transformations – economic, technological and cultural. The ways of creating, processing and storing information are radically changing, and a new generation of its consumers is being formed in accordance with this. For the professional community, this means the need for constant revision of both the foundations of the existence of the library social institute as a whole and the individual components of its activities. Such “reformatting” is impossible without serious research work that anticipates and justifies any significant changes in the library field. One of the central concepts and subjects of study in library science and practice today is information needs (IP), as well as a broader phenomenon – the information behavior of categories of information users served by the library. This article continues the tradition of studying the readers’ contingent, its search behavior and individual information needs, which has a rich history in the State Public Scientific Technological Library of SB RAS. The need to comprehend new social and technological transformations that primarily affect the interaction of the library and the reader has always been in the focus of its specialists. The analysis carried out by the authors of the study makes it possible, in particular, to determine subject trends, the degree of activity of readers’ groups, and presence of common and specific features in their structure. Differentiation of information needs according to these parameters reveals new trends in the use of SPSTL SB RAS collections and allows us to talk about the significant development of the service system technology of the Library from traditional forms of interaction with the reader to communication forms based on computer technologies, from the moment of its foundation up today. Further deepening of research in this area is important for the development and perfection of information services for its readers and users.
