Our PhD student in AI Alexandre Letard, presented on May 17, 2022 his latest paper, “COM-MABs: From User’s feedback to Recommendation”, elaborated in the framework of his thesis, at the 35th edition of the FLAIRS conference in Miami, Florida. It was supervised by his co-supervisors Nicolas Gutowski, Ph.D., Olivier Camp, Tassadit Amghar and supported by the institutions: University of Angers, ESEO – Grande Ecole of Digital Transformation Engineers and LERIA – Computer Science Study and Research Laboratory in this project. Motivated by the development of new applications of k-element recommender systems, we show how the adjustment of their reward functions can improve their performance in all situations. We are proud to have been able to meet the scientific community that allows the advancement of artificial intelligence.