Instruct: Classify Amazon reviews into positive or negative sentiment
Query: All those years......

Semipaerametric, like nonparametric and other parametric theories, are fasicinating. Semiparametric modeling is largerlyused in today's finance, economics and applied mathematics....It is not a possession of statisticians or econometricians...It is ours....Real applications just show the merit of themself, parameters estimation and prediction are always and everywherescholars' interests.....So it goes....