0.01 text^0.5 features_t^1.0 subject^1.4 title_stemmed^2.0 text^0.2 features_t^1.1 subject^1.4 title_stemmed^2.0 title^1.5 ord(weight)^0.5 recip(rord(iind),1,1000,1000)^0.3 3<-1 5<-2 6<90% 100