We examine the ability of combining symbolic and subsymbolic approaches b y means of recursively encoding and decoding structured data. We show that encoding of symbolic data is possible in this w ay { hence neural netw orks seem well suited for control or classi cation in symbolic approaches { whereas decoding requires an increasing complexit y of the decoding function { hence netw orks with t...

High energy heavy ion collisions create quark gluon plasmas that behave like almost perfect fluids. Very similar features to those led this insight have also been observed in experimental data from of small systems, involving protons or other light nuclei. We describe recent developments aimed at understanding whether, and if so how, systems produce relatively few particles (orders magnitude le...