Séminaires LEMMA

"Vocabulary Aggregation"

Marco LiCalzi (Ca' Foscari University of Venice), en collaboration avec Alperen Yasar

Mardi 20 mai 2025, 11h-12h

Lemma - 4 rue Blaise Desgoffe, 75006 Paris. Salle Maurice Desplas

Abstract : Abstract:  A vocabulary is a list of words designating subsets of points from a grand set X. We model a vocabulary as a partition of X and study the aggregation of individual vocabularies into a collective one. We characterize aggregation rules when X is linearly ordered and each partition is formed by order intervals. Notably, we allow for individual vocabularies to differ both in the number and in the extension of their words. Under a suitable restriction on agents’ preferences, we show that our aggregation rules are strategy-proof.

"A Decision-Making model based on Habitual Domain theory"

Moussa Larbani

Mardi 29 avril 2025, 11h-12h

Lemma - 4 rue Blaise Desgoffe, 75006 Paris. Salle Maurice Desplas