Our goal is to provide an open access to rich and complete data sets, for machines and humans alike. While a sister activity focuses on humans, Open Data & Semantic Web researches machine-oriented features, granting experts, developers and software agents query, automatic analysis and reasoning capabilities. We mainly leverage the Semantic Web technologies to create web portals enabling an open and public access to data that enhance citizens and foster the growth of new open initiatives.
Linked Data is the main technology we used for publishing data within the Semantic Web. Moreover, we employ the major vocabularies and ontologies for the design and modelling of data set, SPARQL for querying data and the main data format such as RDF, N-triple, JSON-LD for exporting them.


Clavius is a a Web platform using current technologies of computational linguistics, knowledge engineering, digital philology, Web of Data and information visualization. It has a Linked Open Data set containing letters, places and persons related to the works and the correspondence of the astronomer Christophorus Clavius.

DoGi represents one of the main online consulted source of information for articles published on italian juridical journals. It contains bibliographic information, abstracts, summaries and other manually selected data about more than 400 paper prints and electronic journal articles.


The atlas of DBpedia: a map-like representation of DBpedia developed using the Linked Data maps approach.

The atlas of LinkedMDB: a map-like representation of LinkedMDB developed using the Linked Data maps approach.

Lod Cloud: an interative visualization of the Linked Open Data (LOD) Cloud represented as a universe of planet. Search feature, developed using the API, allows to find a dataset in the LOD cloud.

SpaceTime: a tool for exploring DBpedia using the space and time dimension through a map and a timeline.

Meteo: a D3.js visualization using the open data of Lamma published on OpenToscana.


State of the Art: a collection of scientific articles, applications and tools about the visualization, exploration and navigation of Linked Data sets.


Fabio Valsecchi, Matteo Abrate, Clara Bacciu, Silvia Piccini, Andrea Marchetti
Text Encoder and Annotator: an all-in-one editor for transcribing and annotating manuscripts with RDF
2016, European Semantic Web Conference (SW4SH)

Fabio Valsecchi, Matteo Abrate, Clara Bacciu, Maurizio Tesconi, Andrea Marchetti
Linked Data Maps: Providing a Visual Entry Point for the Exploration of Datasets
2015, International Semantic Web Conference (IESD)

Fabio Valsecchi, Matteo Abrate, Clara Bacciu, Maurizio Tesconi, Andrea Marchetti
DBpedia Atlas: Mapping the Uncharted Lands of Linked Data
2015, World Wide Web Conference (LDOW)

Davide Gazzè, Angelica Lo Duca, Andrea Marchetti, Maurizio Tesconi
An Overview of the Tourpedia Linked Dataset with a Focus on Relations Discovery among Places
2015, International Conference on Semantic Systems

Fabio Valsecchi, Marco Ronchetti
Spacetime: a Two Dimensions Search and Visualisation Engine Based on Linked Data
2014, International Conference on Advances in Semantic Processing


DBpedia Lookup: a lookup service for entities inside DBpedia. Inserting a text parameter and optionally class and hits you can get a JSON result file.

DBpedia Ontology: a simple service that converts the ontology published as HTML on the official web site in JSON format.

Some prototype applications for navigating DBpedia:

LD Browser: a prototype browser for navigating Linked Data sets.


SPARQL language: a collection of examples of SPARQL queries grouped by category

How to create a LOD-based Web application?: a basic tutorial prepared for the CNR of Milano