Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Helpful

As explained in the acknowledgements, this book grew out of research projects of the authors. It seeks to explain how one draws valid meaning from qualitative data. The focus of the book, as a consequence, is analysis. The authors see themselves as logical positivists. Three components of analysis are: data reduction, data display, and conclusion drawing/verification.Like a large number of other scholars, they see compatibility between qualitative and quantitative research. They contend that "qualitative research can be outright 'confirmatory.'"This book covers the basics of doing a qualitataive study. It is a helpful reference to use for experienced researchers as well as an excellent introduction for beginners.