This book constitutes the refereed proceedings of the 17th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2019, held in Kyoto, Japan, in May 2019. The 10 full papers included in the volume together with a keynote paper and 3 work-in-progress papers were carefully reviewed and selected from 37 submissions. The papers discuss advances in theoretical, technical, and practical issues in the field of wireless and Internet technologies suited for the dissemination, usage, and processing of geo-referenced data. They cover topics such as Web technologies and techniques, paths and navigation, Web visualization, and novel applications.

This book constitutes the refereed proceedings of the 13th Information Retrieval Societies Conference, AIRS 2017, held in Jeju, Korea, in November 2017. The 17 full papers presented were carefully reviewed and selected from numerous submissions. The final program of AIRS 2017 is divided in the following tracks: IR Infrastructure and Systems; IR Models and Theories; Personalization and Recommendation; Data Mining for IR; and IR Evaluation.