: Note that you might want to try spliiting the text into fields and : doing no further boosting--usually the idf and length normalization : factor will give very high scores to title fields without explicit : boosting.
I've acctually seen the oposite happen as well ... assuming 100,000 products, 1,000 of which are "Nike" products and have "Nike" in the title, while only 10 products in the catalog have "Nike" in the review text -- half Nike products half competitors ... the idf of review:Nike can boost the score of competitor products well above the title:Nike products. -Hoss
