Michał Bojanowski will deliver a keynote speech "A handful of friends or a hundred acquaintances?" presenting the PATCHWORK research in the ARS'23 Ninth International Workshop on Social Network Analysis on May 3rd in Ischia, Italy. The ARS is a renowned conference on recent methodological developments in Social Network Analysis, and will be held for the ninth time. Alexi Quintana will also present his work at the conference.