This books contain very good contain and explain very well. This was suggested by our Prof. B. S. Dayasagar for our course. I also suggested this book for our Indian Statistical Institute, Bangalore, Library.
You can find different concept like Bag of words, Recall measure, TF-IDF, IDF very well explain. and easy to understand

Great book

Its a superb book for beginners in Information Retrieval. Everything is well written and superbly explained.

Thanks to flipkart for their superfast delivery. Regarding the book quality, its quite good, being an essential buy for me!!