COVID-19 RDF Daily Reports Open Data set (Video Presentation)
COVID-19 Daily Reports from European countries, integrated and transformed to RDF triples.
COVID-19 SPARQL Endpoint
Coronis: COVID-19 Linked Open Data Set Endpoint
NoDA Demonstration for Unified Access to NoSQL Stores (Video Presentation)
A showcase of NoDA that focuses on spatial and spatio-temporal querying on NoSQL stores
Scalable Spatio-temporal Indexing and Querying over a Document-oriented NoSQL Store (Video Presentation)
The work presents a spatio-temporal indexing and querying solution for large volumes of data over a document-oriented NoSQL store, namely MongoDB
Tearing Down the Tower of Babel: Unified and Efficient Spatio-temporal Queries for NoSQL Stores (Video Presentation)
NoSQL stores are used extensively for scalable storage and efficient querying of large spatio-temporal data collections in modern applications. Yet, despite their popularity, NoSQL systems have two main limitations when confronted with spatio-temporal data: (a) they do not offer optimized indexing methods, and (b) they still rely on heterogeneous languages and lack of standardization in data access, a situation bearing resemblance to the narrative of the tower of Babel.