Well, my bet is on it being something of a mix between bloom filter and a graph. i.e the interconnectedness of graph and the probabilistic nature of Bloom filte

Well, my bet is on it being something of a mix between bloom filter and a graph. i.e the interconnectedness of graph and the probabilistic nature of Bloom filter both would be a fundamental element. Ofcourse, this will make sense only as a simulation model of the black box that's our brain/neurons/neural pathways.