The utility of an enterprise search system is determined by three key players: the information retrieval (IR) system (the search engine), the enterprise users, and the service provider who delivers the tailored IR service to its designated enterprise users. Currently, evaluations of enterprise search have been focused largely on the IR system effectiveness and efficiency, only a relatively small amount of effort on the user’s involvement, and hardly any effort on the service provider’s role. This paper will investigate the role of the service provider. We propose a method that evaluates the cost and benefit for a service provider of using a mediated search engine – in particular, where domain experts intervene on the ranking of the search results from a search engine. We test our cost and benefit evaluation method in a case study and conduct user experiments to demonstrate it. Our study shows that: 1) by making use of domain experts’ relevance assessments in search result rank...
Mingfang Wu, James A. Thom, Andrew Turpin, Ross Wi