This score can be used as a creative starting point, as a open-form score that defines all materials you use, or ignored.
The overall aim is to establish clearly differentiated musical materials, characterised by pitch, loudness, density, rhythmic activity, sustained-ness and the degree of internal variation (within a timeframe of 10-20 sec.) Having decided upon materials, either in advance or during the performance, the improvisation should focus on recalling and varying these types. Silence is recognised as a material. As you introduce new materials or recall previous ones, you should hear complementary responses from the computer improviser, which should seem both reactive and pro- active in its behaviour.

https://research.gold.ac.uk/id/eprint/5593