Towards a pay-per-action model in sponsored search.

Mohammad Mahdian Kerem Tomak Towards a pay-per-action model in sponsored search. 87-88 2007 conf/ACMicec/2007 ICEC http://doi.acm.org/10.1145/1282100.1282118 db/conf/ACMicec/icec2007.html#MahdianT07