Information Theory, Inference, and Learning Algorithms by David MacKay, which is a very well known text. It's freely available online at: http://www.inference.

Information Theory, Inference, and Learning Algorithms by David MacKay, which is a very well known text. It's freely available online at: http://www.inference.phy.cam.ac.uk/itprnn/book.html http://www.inference.phy.cam.ac.uk/itprnn/book.html