Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a very painfull process

I originaly was introduced to this book in college by a teacher who said the text would open heretofore unknown vistas to me. It was supposed to turn me into a deeply understanding computer scientist, and not just a code monkey. I found out those promises didn't come true. Two semesters later I was feeling lucky to have finally finished the course, and was angry to have wasted so much time. This book quite simply doesn't deliver what it promises. Instead, it tries to be as coprehensive as possible, covering so many topics that I was dizzy, but it does a very bad job of explaining anything in detail. The end result is that I learned nothing. Apparently the authors believe quantity is better than quality. In any case, you won't get anything out of that text...and it certainly won't make you a better computer scientist, though it pretends to. Don't waste your time and money.