ECAL and SAB are not mainstream AI conferences. They are niche artificial life / adaptive behaviour meetings and have a very different flavour and history.
IJCAI and AAAI are the mainstream long-running AI meetings.
NIPS and ICML are the recently-ascendent NN-heavy meetings.
IJCAI and AAAI are the mainstream long-running AI meetings.
NIPS and ICML are the recently-ascendent NN-heavy meetings.