Introduction - If you have any usage issues, please Google them yourself
Introduction to Information Retrieval is the first textbook with a coherent treatment
of classical and web information retrieval, including web search and
the related areas of text classification and text clustering. Written from a
computer science perspective, it gives an up-to-date treatment of all aspects
of the design and implementation of systems for gathering, indexing, and
searching documents and of methods for evaluating systems, along with an
introduction to the use of machine learning methods on text collections.