This book is about Information Retrieval (IR), particularly Classical
Information Retrieval (CIR). It looks at these topics through their
mathematical roots. The mathematical bases of CIR are briefly reviewed,
followed by the most important and interesting models of CIR, including
Boolean, Vector Space, and Probabilistic. The primary goal of book is to
create a context for understanding the principles of CIR by discussing
its mathematical bases. This book can be helpful for LIS students who
are studying IR but have no knowledge of mathematics. Weakness in math
impairs the ability to understand current issues in IR. While LIS
students are the main target of this book, it may be of interest to
computer science and communications students as well.