This volume contains the lecture notes of the 13th Reasoning Web Summer School RW 2017 held
in London UK in July 2017. In 2017 the theme of the school was Semantic Interoperability on
the Web which encompasses subjects such as data integration open data management reasoning
over linked data database to ontology mapping query answering over ontologies hybrid
reasoning with rules and ontologies and ontology-based dynamic systems. The papers of this
volume focus on these topics and also address foundational reasoning techniques used in answer
set programming and ontologies.
