In this article a multi-source system is presented as a case-study in order to show how agents can be used to build a dynamic dictionary. In this context a dictionary has a much wider sense than usual: anything that can give information about a term (whatever term may be) is a dictionary. The dictionary is composed by several information sources with different domains (knowledge area and cardin...

In all but special circumstances, measurements of time-dependent processes reflect internal structures and correlations only indirectly. Building predictive models of such hidden information sources requires discovering, in some way, the internal states and mechanisms. Unfortunately, there are often many possible models that are observationally equivalent. Here we show that the situation is not...

Advances in Semantic Web and Ontologies have pushed the role of semantics to a new frontier: Semantic Composition of Web Services. A good example of such compositions is the querying of multiple bioinformatics data sources. Supporting effective querying over a large collection of bioinformatics data sources presents a number of unique challenges. First, queries over bioinformatics data sources ...