Transactions on Large-Scale Data- and Knowledge-Centered Systems XXXVIII Special Issue on Database- and Expert-Systems Applications - Hameurlain, Abdelkader; Hameurlain, Abdelkader; Wagner, Roland; Wagner, Roland; Hartmann, Sven; Hartmann, Sven; Ma, Hui; Ma, Hui (Springer Berlin Heidelberg : Imprint: Springer, 2018)