This book constitutes the refereed proceedings of the 12th Extended Semantic Web Conference
ESWC 2014 held in Anissaras Portoroz Slovenia in May June 2015. The 43 revised full papers
presented together with three invited talks were carefully reviewed and selected from 164
submissions. This program was completed by a demonstration and poster session in which
researchers had the chance to present their latest results and advances in the form of live
demos. In addition the PhD Symposium program included 12 contributions selected out of 16
submissions. The core tracks of the research conference were complemented with new tracks
focusing on linking machine and human computation at web scale (cognition and Semantic Web
Human Computation and Crowdsourcing) beside the following subjects Vocabularies Schemas
Ontologies Reasoning Linked Data Semantic Web and Web Science Semantic Data Management Big
data Scalability Natural Language Processing and Information Retrieval Machine Learning
Mobile Web Internet of Things and Semantic Streams Services Web APIs and the Web of Things
Cognition and Semantic Web Human Computation and Crowdsourcing and In-Use Industrial Track as
well.
