Masaya Murata Hiroyuki Toda Yumiko Matsuura Ryoji Kataoka Query-page intention matching using clicked titles and snippets to boost search rankings. 105-114 2009 JCDL http://doi.acm.org/10.1145/1555400.1555419 conf/jcdl/2009 db/conf/jcdl/jcdl2009.html#MurataTMK09