WI-IAT 2013 provides a leading international forum to bring together researchers and practitioners from diverse fields, to increase the cross-fertilization of ideas and explore the fundamental roles, interactions as well as practical impacts of Artificial Intelligence engineering and Advanced Information Technology on the next generation of Web systems. Web Intelligence has been recognized as one of the most important as well as promising direction for scientific research and development in the era of Web and agent intelligence to bring in the next generation Web systems. Furthermore, WI 2013 will include workshops providing in-depth background on subjects that are of broad interest to Web intelligence and Intelligent Agent Technology communities. The workshop programs will focus on new research challenges, initiatives and applications WI 2013 is an excellent opportunity for researchers who wish to examine design principles and performance characteristics of various approaches in web intelligence technology, and increase the cross-fertilization of ideas on the development of web intelligence systems among different domains. Dr. John E. Hopcroft from Cornell University, who won A. M. Turing Award in 1986, will give a keynote speech at WI-IAT'13.