Transactions on Large-Scale Data-and Knowledge-Centered Systems Transactions on Large-Scale Data-and Knowledge-Centered Systems XLIV Transactions on Large-Scale Data-and Knowledge-Centered Systems, 2020, pp.41-66. ⟨10.1007/978-3-662-62271-1_2⟩ Transactions on Large-Scale Data-and Knowledge-Centered Systems, Springer Berlin / Heidelberg, 2020, pp.41-66. ⟨10.1007/978-3-662-62271-1_2⟩