38 citations · 184 across the 36 of their papers we have counts for
3 papers · 1 filter
A multi-factorial innovation model with mean-field interaction
Giacomo Aletti, Irene Crimaldi, Andrea Ghiglietti
We introduce an Indian-buffet-type model for multi-factorial innovation in which each arriving agent may exhibit both previously observed and new features. The number of new featur…
Granger Causality in Expectiles: an M-vine copula test
Roberto Fuentes-Martínez, Irene Crimaldi
A model-free measure of Granger causality in expectiles is proposed, generalizing the traditional mean-based measure to arbitrary positions of the conditional distribution. Expecti…
Triggered urn models for frequently asked questions (FAQ)
Irene Crimaldi, Andrea Ghiglietti, Leen Hatem +1
We investigate a nonclassic urn model with triggers that increase the number of colors. The scheme has emerged as a model for web services that set up frequently asked questions (F…