Ionela G. Mocanu Vaishak Belle Brendan Juba Learnability with PAC Semantics for Multi-agent Beliefs. 2604-2606 2023 AAMAS https://dl.acm.org/doi/10.5555/3545946.3599016 conf/atal/2023 db/conf/atal/aamas2023.html#MocanuBJ23