SIIDS – Sound, Image and Interaction Doctoral Symposium (4/10/2018) was hosted by M-ITI – Madeira Interactive Technologies Institute (Funchal, Portugal), and had two tracks: poster (with oral presentation) and performance. There was also a keynote presentation (and performance) by Prof. Atau Tanaka (Goldsmiths, U. London). Participation was open to all international PhD students conducting research on computer-based systems for interactive sound, in particular combined with image. We had 9 participants for the poster track, and 2 for the performance track. The Symposium was preceded by a talk (3/10/2018) by Fabio Morreale (Queen Mary U. London).