In this task, you are given books product reviews in English language. The goal is to classify the review as "POS" if the overall sentiment of the review is positive or as "NEG" if the overall sentiment of the review is negative.
--------
Question: Excellent introduction to the field for physicists . Perhaps the best feature of this book is that it aims to convey the theory of Lie algebras and Lie groups to physicists. In doing so, the author is careful to give a very simplistic approach so that one not familiar with  the subject can understand it. Not to say that the book is elementary,  since it builds rapidly into the far more interesting aspects of Lie  Groups. A very good read

Answer: POS


Question: All 13 stories . It looks like Amazon has taken the reviews of the audio casette set with the same name and put them on this product.  There are 13 stories and not 5 as the cassette reviews state.  They take up 6 CDs.      There is one technical flaw. The labeling is wrong on four of the CDs.  The number is correct (1-6) but the list of stories on 3 and 5 are swapped and 4 and 6 are swapped.  Once you solve that mystery things go well.      These are short stories and not novels so you should not expect complex plot development or character descriptions.  They are a good way to kill half an hour of otherwise wasted time in your life.

Answer: POS


Question: Not for the beginner. . I went to the same school as the author of this book, and so it was used for my introductory CMOS design class.  The book has a lot of great material, but it was rather confusing to me as a beginner.  Now that I'm a more seasoned designer, I can look back on this book as an excellent reference, but I STILL find the explanations somewhat confusing.  It's clear that the author is a foremost expert on the subject, but he just has some trouble relaying the fundamentals to the novice designer

Answer:
NEG