Abstract
This special issue contains revised and extended versions of papers presented at the 33rd Italian Conference on Computational Logic – CILC 2018 – which was held in Bolzano, Italy, on September 20-22, 2018. CILC is the annual conference organized by GULP (Group of researchers and Users of Logic Programming). Since the first event of the series, which took place in Genoa in 1986, the annual GULP conference represents the main opportunity for Italian users, researchers and developers working in the field of computational logic to meet and exchange ideas. Over the years the conference broadened its horizons from the specific field of logic programming to include declarative programming and applications in neighboring areas such as artificial intelligence and deductive databases.