How AI Impacts Urban Living and Public Health : 17th International Conference ICOST 2019 New York City NY USA October 14 16 2019 Proceedings This open access book constitutes the refereed proceedings of the 17th International Conference on String Processing and Information Retrieval ICOST 2019 held in New York City NY USA in October 2019. The 15 full papers and 5 short papers presented in this volume were carefully reviewed and selected from 24 submissions. They cover topics such as: e health technology design; well being technology; biomedical and health informatics; and smart environment technology E health technology design Well being technology Biomedical and health informatics Smart environment technology