The number of Web-databases has exploded during the last years. In order to justify the development of new information resources, it is essential to know if the use of existing re...
Expert finding addresses the problem of retrieving a ranked list of people who are knowledgeable on a given topic. Several models have been proposed to solve this task, but so far...
User-contributed tags have shown promise as a means of indexing multimedia collections by harnessing the combined efforts and enthusiasm of online communities. But tags are only o...
Increasingly, public transportation systems are equipped with Global Positioning Systems (GPS) connected to control centers through wireless networks. Controllers use this infrast...
We propose a new Web search system that helps users clarify their information needs through interaction. The system represents the user's information needs using a query grap...