The effectiveness of Yandex and Google to search for teaching materials

The paper describes an experiment to assess the effectiveness of Internet search for training material on the course of introduction to information science by the students of different specialties in the Moscow State University of Culture and Arts. Yandex and Google search engines were taken as the search tool. Their effectiveness was assessed by the classic accuracy rate T and the newly introduced search sufficiency rate D. Figure D was determined by the degree of the user’s satisfaction of the search results. The experiment showed that in the majority of cases, both systems allow retrieving of basic information, but do not provide comprehensive knowledge. In this respect, Yandex has a certain advantage over Google. The general character of the results reveals the suitability of T and D indicators for numerical evaluation of Internet search engines efficiency.