Understands the principles and practice of inferencing.
Querying Semantic Web Data with SPARQL (and SPARQL 1.1)
This lengthy slide presentation covers SPARQL 1.1. It begins with the fundamentals: graph patterns, operators, and algebraic representations. The second half dives deeply into complex [...]
Towards Reconciling SPARQL and Certain Answers
SPARQL entailment regimes are strongly influenced by the big body of works on ontology-based query answering, notably in the area of Description Logics (DLs). However, [...]
ELITE: An Entailment-based Federated Query Engine for Complete and Transparent Semantic Data Integration
In recent years, the core of the Semantic Web has evolved to a conceptual layer built by a set of ontologies mapped onto data distributed [...]
Updating RDFS ABoxes and TBoxes in SPARQL
Updates in RDF stores have recently been standardized in the SPARQL 1.1 Update specification. However, computing answers entailed by ontologies in triple stores is usually [...]
Using SPARQL with RDFS and OWL Entailment
This chapter accompanied the lecture on SPARQL with entailment regimes given at the 7th Reasoning Web Summer School in Galway, Ireland, 2011. It first introduces [...]
Querying Linked Data
This slide presentation looks in detail at SPARQL and introduces approaches for querying and updating semantic data. It covers SPARQL algebra and protocol, and also [...]
The Rise of Graph Databases/Dataspaces and Their Relations with Linked Data and Ontologies
This talk was presented at the Laboratory of Information Systems' Institute of Computing UNICAMP in December, 2013. It discusses several research topics which should be [...]
Intro to OWL & Ontology
This slide presentation is an overview of OWL, including its classes, properties, and restrictions. Also includes brief coverage of how OWL relates to RDF Schema [...]
The Semantic Web: An Introduction
This document is designed as being a "simple but comprehensive introductory publication for anybody trying to get into the Semantic Web: from beginners through to [...]
Learn OWL and RDFS
This set of lessons is an introduction to OWL and an introduction to RDF Schema (RDFS). OWL and RDFS are key Semantic Web technologies that [...]