Amin Anjomshoaa & Abdelkader Hameurlain 
Transactions on Large-Scale Data- and Knowledge-Centered Systems XXVII 
Special Issue on Big Data for Complex Urban Systems

This, the 27th issue of Transactions on Large-Scale Data- and Knowledge-Centered Systems, contains extended and revised versions of 12 papers presented at the Big Data and Technology for Complex Urban Systems symposium, held in Kauai, HI, USA in January 2016. The papers explore the use of big data in complex urban systems in the areas of politics, society, commerce, tax, and emergency management.