This book constitutes the refereed proceedings of the Pacific Asia Workshop on Intelligence and
Security Informatics PAISI 2013 held in Beijing China in August 2013 in conjunction with
the International Joint Conference on Artificial Intelligence (IJCAI 2013). The 4 revised full
papers presented together with 7 short papers were carefully reviewed and selected from
numerous submissions. The papers are organized in topical sections on information sharing and
data text mining terrorism informatics network-based data analytics and information access
and security.
