This book constitutes the refereed proceedings of the Forth Workshop onEngineering Applications
WEA 2017 held in Cartagena Colombia inSeptember 2017. The 59 revised full papers presented
were carefully reviewed and selectedfrom156 submissions. The papers are organized in topical
sections such as computerscience computational intelligence simulation systems internet of
things fuzzy sets and systems power systems logistics and operations management
miscellaneous applications.