We study complexity and approximation of queries in an expressive query language for probabilistic databases. The language studied supports the compositional use of confidence com...
In this paper, we describe a query system that provides visual relevance feedback in querying large databases. Our goal is to support the process of data mining by representing as...
We discuss the de nition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and...
Peter Buneman, Susan B. Davidson, Wenfei Fan, Carm...
Text documents often embed data that is structured in nature. By processing a text database with information extraction systems, we can define a variety of structured "relati...
As information becomes available in increasing amounts to a wide spectrum of users, the need for a shift towards a more user-centered information access paradigm arises. We develo...