Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I wasted my money

This book needs to be edited - badly. It's very difficult to read. Sentences a page apart contradict each other.The author repeatedly claims that these techniques are simple and mechanical but they seem to me to be just the opposite. I found them very difficult to understand and he allows so much variation in the parameters that the interpretation becomes very subjective.Worse, he explains a technical indicator and cites specific parameters and then goes on to point out that the reader may want to vary these parameters all over the place! Excuse me, sir, but I thought that was why you did all the research - to figure out what the proper parameters were. If you tell me that I need to experiment with them then why do I need your book?