Linked Data promotes the publication of structured data, easing the development of an homogeneized-view over heterogeneous sources, called Linked Data Mashup view (LDM view). This article describes the processes of specification and materialization of a LDM view of two heterogeneous bases from Brazilian Public Health System (SUS): Information System on Live Births (SINASC) and SUS electronic (e...

An active XML (AXML) document contains special tags that represent calls to Web services. Retrieving its contents consists in materializing its data elements by invoking all its embedded service calls in a P2P network. In this process, the results of some service calls are often used as inputs to other calls. Also, usually several peers provide each requested Web service, and peers can collabor...

To select some "valuable" views for materialization is an essential challenge in OLAP system design. Several techniques proposed previously are not very scalable for systems with a large number of dimensional attributes in the very dynamic OLAP environment. In this paper, we propose two filtering methods. Our first method, the functional dependency filter, removes views with redundant summary i...

Materialization and hierarchical routing algorithms are becoming important tools in querying databases for the shortest paths in time-critical applications like Intelligent Transportation Systems (ITS), due to the growing size of their spatial graph databases 16]. A hierarchical routing algorithm decomposes the original graph into a set of fragment graphs and a boundary graph which summarizes t...

Mobile agents are autonomous programs that migrate from one machine to another within a network on behalf of a client thus they are ideal for mobile computing environments since tasks can be delegated to mobile agents when a mobile client is disconnected This paper extends the traditional functionality of a mobile service agent with capabilities that facilitate asynchronous cooperation among mo...