The presentation of news articles to meet research needs has traditionally been a document-centric process. Yet users often want to monitor developing news stories based on an event, rather than by examining an exhaustive list of retrieved documents. In this work, we illustrate a news retrieval system, eventNews, and an underlying algorithm which is event-centric. Through this system, news arti...

As IT systems become more complex and the number of users increases dramatically, automation of user management tasks becomes a high priority for administrators. Grouping users intelligently based on their interactions with the system can serve two purposes. First, it can supply administrators with a global view of the user pool via meaningful user classes that are based on the actual system us...

While clustering is usually an unsupervised operation, there are circumstances in which we believe (with varying degrees of certainty) that items A and B should be assigned to the same cluster, while items A and C should not. We would like such pairwise relations to influence cluster assignments of out-of-sample data in a manner consistent with the prior knowledge expressed in the training set....