Querying and searching the Web is an important research field which has drawn a number of concepts from databases and information retrieval fields, but has added its own models, ...
We present a new approach to extracting information from unstructured documents based on an application ontology that describes a domain of interest. Starting with such an ontolog...
David W. Embley, Douglas M. Campbell, Randy D. Smi...
Esfinge is a general domain Portuguese question answering system which uses the information available on the Web as an additional resource when searching for answers. Other externa...
This paper deals with pipelined queries over services. The execution plan of such queries defines an order in which the services are called. We present the theoretical underpinni...
With the proliferation of XML as the lingua franca of internet information exchange, engineering XML documents and maintaining their databases becomes a major challenge. In this c...