Similarity search and applications 14th International Conference, SISAP 2021, Dortmund, Germany, September 29 - October 1, 2021 : proceedings - Reyes, Nora; Connor, Richard; Kriege, Nils Morten 1983-; Kazempour, Daniyal 1988-; Bartolini, Ilaria; Schubert, Erich; Chen, Jian-Jia (Springer, 2021)