Semantic Web technologies have been in use for several years. In particular, the second version of the Web Ontology Language (OWL), a logical formalism for defining ontologies, is a W3C recommendation since 2012. Secondly, knowledge extraction and knowledge discovery are key aspects investigated in a number of research fields, which can potentially benefit from the application of Semantic Web technologies, and specifically from the development and reuse of ontologies.
The main goal of this book is to provide an overview of application fields for Semantic Web technologies. In particular, the objective is to investigate how state-of-the-art formal languages, models, methods, and applications of Semantic Web technologies reframe research questions and approaches in a number of research fields. Secondly, the book aims at showcasing practical tools and background knowledge for building and querying ontologies.
The first part of this book presents the state of the art of ontology design, applications and practices in a number of communities, so as to provide an overview of the latest approaches and techniques for building and reusing ontologies according to domain-dependent and independent requirements. Once the data is represented according to ontologies, it is important to be able to query and reason about them, also in presence of uncertainty, vagueness and probabilities.
The second part of this book, without forgetting its practical goal, illustrates the modern advances in the field of ontology semantics and reasoning.
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