Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for implementors.

The author has done good work in introducing the basic concepts in Value-at-Risk. However, the text leaves some important statistical and implementation points hidden, making implementing VaR look far too easy. For example, there is no discussion about the problems involved in long-term forecasting of correlations and volatilities.The much advertised "new distinctive investment approach", the so called "Generalized Sharpe Rule" is a rather naive treatment on classical risk/return analysis. However, the lack of mathematical rigour is well compensated with good references.