Sources of evidence for vertical selection
Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval
Automated snippet generation for online advertising
Proceedings of the 22nd ACM international conference on Conference on information & knowledge management
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Over the past decade, online advertising became the principal economic force behind many an Internet service, from major search engines to globe-spanning social networks to blogs. There is often a tension between online advertising and user experience, but on the other hand, advertising revenue enables a myriad of free Web services to the public and fosters a great deal of innovation. Matching the advertisers' message to a receptive and interested audience benefits both sides; indeed, literally hundreds of millions of users occasionally click on the ads, hence they should be considered relevant to the users' information needs by current IR evaluation principles. The utility of ads can be better explained by considering advertising as a medium of information [2, 3]. Similarly to aggregated search [1], which enhances users' Web search experience with relevant news, local results, user-generated content, or multimedia, online advertising provides another rich source of content. This source, however, is in a complexity class of its own, due to the brevity of bid phrases, ad text being optimized for presentation rather than indexing, and multiple, possibly contradictory utility functions.