The SWGET portal: Navigating and acting on the web of linked data Valeria Fionda 1, Claudio Gutierrez 2, Giuseppe Pirrò 3 1 Department of Mathematics, University of Calabria, Italy 2 Computer Science Department, Universidad de Chile, Chile 3 Faculty of Computer Science, Free University of Bozen-Bolzano, Italy

Scenario

The Web of Linked Data (WLOD)  Graph ‘‘Consuming’’ data in this graph is challenging due to the intrinsically decentralized data creation/management, the lack of superimposed schema the unknown topology of data sources and their links. In the WLOD, which is not known in its entirety, navigation amounts at going from one data source to another (unknown) data source guided by some navigational chart (i.e., a navigational expression).

The SWGET portal that allows users to instruct software modules to (virtually) move across data sources, interpret knowledge, take decisions and trigger actions much in the same spirit of the intelligent agents envisioned in the early days of the Semantic Web. Instructions are given via the navigational language NautiLOD.

http://swget.inf.unibz.it/blazeds/swget/swget.html

(<http://dbpedia.org/property/influenced> <1-6>) [ASK {?person <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Scientist>.}]/<http://www.w3.org/2002/07/owl#sameAs>*]

Conclusion We presented the NautiLOD language to navigate, specify fragments and perform actions on theWeb of Data. NautiLOD explicitly exploits the semantics of the data stored at each URI. The swget, an implementation of NautiLOD in a centralized setting that works over realworld data, namely the LOD network.

Thanks