The 2016 Expert Survey on Progress in AI is a survey of machine learning researchers that AI Impacts ran in collaboration with others in 2016.
Some results are reported in When Will AI Exceed Human Performance? Evidence from AI Experts, and others have not yet been published. This page should be updated with more results soon, as of June 2017.
The full list of questions is available here. Participants received randomized subsets of these questions.
Below is a table of summary results from the paper (the paper contains more results).