Hi, welcome to our course on semantic web and the web of linked data. First of all let us give you a brief introduction to who we are. My name is Oscar Corcho, a professor at the Universidad Politecnica de Madrid, and one of the directors of the Ontology Engineering Group, where we have been working for more than 20 years in the area of ontological engineering and the Semantic Web. My name is Idafen Santana, postdoc at the OEG at Universidad Politecnica de Madrid and I have been lecturing about Semantic Web and Linked data over the last years. And we’re missing from this introduction, although you will see him doing some of the lectures, Raul Garcia Castro, who is an associate professor at the UPM and also a member of ontology engineering group. We’re really happy to be able to offer you this course on Semantic Web and Linked Data. It is based on more than 10 years of experience in teaching these topics to a wide range of students from undergraduate in computer science, to master students together with professionals who are applying these principles and technologies in their organizations. We hope that you will enjoy the course and we’ll get a basic theoretical and practical understanding of what it means to make data available on the web according to the principles of the semantic web and the web of linked data. This will include understanding the benefits of publishing date on the web under these principles, being able to apply methodologies and technologies for Linked data generation and publication, and being able to select and create ontologies and vocabularies that will serve as the foundation for the linked data that you have to publish. The course is a structured in eight modules, the first one is focused on providing the principles of the semantic web and linked data, the second and third modules provide you with basic principles to start working on representing data on the web according to these general principles and query such data. Then, the rest of the modules will make you understand the methodological process that is needed to generate linked data, as well as basic tools for generating RDF from existing data sources. We will mainly focus on relational databases. This will make sure that your data is easier to understand and use by using existing vocabularies and ontologies, linking your data with other data sources, and publishing the generated data. Finally you will have the opportunity to test yourself, that is, see what you have learned throughout the course by means of tests after all of the modules. As well as a general hands-on exercise, where you will be producing linked data. You will have to work on the creation or selection and option of existing vocabularies, on the generation of RDF from existing data sources, and optionally on the publication of such linked data in case that you have the necessary infrastructure to do so. So we hope that you will enjoy our course and looking forward to seeing you in the coming lectures.