Practical Ontologies for Information Professionals provides an accessible introduction and exploration of ontologies and demonstrates their value to information professionals.More data and information is being created than ever before. Ontologies, formal representations of knowledge with rich semantic relationships, have become increasingly important in the context of today's information overload and data deluge. The publishing and sharing of explicit explanations for a wide variety of concepts, in a machine readable format, has the power to both improve information retrieval and discover new knowledge. Information professionals are key contributors to the development of new, and increasingly useful, ontologies.Practical Ontologies for Information Professionals provides an accessible introduction to the following:defining the concept of ontologies and why they are increasingly important to information professionalsontologies and the semantic webexisting ontologies, such as RDF, RDFS, SKOS, and OWL2adopting and building ontologies, showing how to avoid repetition of work and how to build a simple ontologyinterrogating ontologies for reusethe future of ontologies and the role of the information professional in their development and use.Readership: This book will be essential reading for information professionals in libraries and other cultural heritage institutions who work with digitization projects, cataloguing and classification and information retrieval. It will also be useful to LIS students who are new to the field.