of meetings run in parallel at a common site. It is designed to bring colleagues together in an intimate forum while at the same time providing a significant gathering point for the AI community. The two and one half day format of the series allows participants to devote considerably more time to feedback and discussion than typical one-day workshops. It is an ideal venue for bringing together new communities in emerging fields. The symposia are intended to encourage presentation of speculative work and work in progress, as well as completed work. Ample time is scheduled for discussion. Novel programming, including the use of target problems, open-format panels, working groups, or breakout sessions, is encouraged. Reports of the symposia are published in the AAAI Technical Reports series and distributed to the participants. Most participants of the symposia were selected on the basis of statements of interest or abstracts submitted to the symposia chairs; some open registration is allowed. All symposia are limited in size, and participants are expected to attend a single symposium. The eight symposia for 2017 were held March 27–29 on the campus of Stanford University. Symposium Reports