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Conventional wisdom holds that queries to information retrieval systems will yield more relevant results if they contain multiple topic-related terms and use Boolean and phrase operators to enhance interpretation. Although studies have shown that the users of Web-based search engines typically enter short, term-based queries and rarely use search operators,(More)
Enterprise Resource Planning (ERP) systems hold great promise for integrating business processes and have proven their worth in a variety of organizations. Yet the gains that they have enabled in terms of increased productivity and cost savings are often achieved in the face of daunting usability problems. While one frequently hears anecdotes about the(More)
Multimedia data has become readily available from a variety of resources, such as the Web, to users (ranging from naive to sophisticated) who need to select and to present the data in a way that is meaningful to their particular applications. Delaunay " " is our framework for querying and presenting multimedia data stored in distributed data repositories,(More)
Visual query systems have traditionally supported a set of pre-defined visual displays. We describe the <italic>Delaunay</italic> system, which supports visualizations of object-oriented databases specified by the user with a visual constraint-based query language. The highlights of our approach are the expressiveness of the visual query language, the(More)
This paper presents a detailed analysis of the structure and components of queries written by experimental participants in a study that manipulated two factors found to affect end-user information retrieval performance: training in Boolean logic and the type of search interface. As reported previously, we found that both Boolean training and the use of an(More)