In sponsored search advertising, keywords serve as an essential bridge linking advertisers, search users and search engines. Advertisers have to deal with a series of keyword decisions throughout the entire lifecycle of search advertising campaigns. This paper proposes a multi-level and...

Online agent bidding is seen as a win–win solution for both bidders and auctioneers in online auctions. However, it has not been as widely adopted as expected. Based on information systems (IS) habit literature, we developed the agent bidding habit and use model (ABHUM) to investigate the...