This book constitutes the thoroughly refereed post-conference proceedings of the Third COST
Action IC1302 International KEYSTONE Conference on Semantic Keyword-Based Search on Structured
Data Sources IKC 2017 held in Gdansk Poland in September 2017.The 13 revised full papers
and 5 short papers included in the first part of the book were carefully reviewed and selected
from numerous submissions. The second part contains reports that summarize the major activities
and achievements that have taken place in the context of the action: the short term scientific
missions the outcome of the summer schools and the results achieved within the following four
work packages: representation of structured data sources keyword search user interaction and
keyword query interpretation and research integration showcases benchmarks and evaluations.
Also included is a short report generated by the chairs of the action. The papers cover a broad
range of topics in the area of keyword search combining expertise from many different related
fields such as information retrieval natural language processing ontology management
indexing semantic web and linked data.
