This book constitutes the thoroughly refereed post-conference proceedings of the Second COST
Action IC1302 International KEYSTONE Conference on Semantic Keyword-Based Search on Structured
Data Sources IKC 2016 held in Cluj-Napoca Romania in September 2016. The 15 revised full
papers and 2 invited papers are reviewed and selected from 18 initial submissions and cover the
areas of keyword extraction natural language searches graph databases information retrieval
techniques for keyword search and document retrieval.
