Peter Hase

Peter Hase UNC Chapel Hill Owen Shen UC San Diego With thanks to Robert Kirk and Mohit Bansal for helpful feedback on this post. Introduction Model interpretability was a bullet point in Concrete Problems in AI Safety (2016). Since then, interpretability has come to comprise entire research directions in technical safety agendas (2020); model transparency appears throughout An overview of 11 proposals for building safe advanced AI (2020); and explainable AI has a Twitter hashtag, #XAI. (For more on how interpretability is relevant to AI safety, see here or here.) Interpretability is now a very popular area of research. The interpretability area was the most popular in terms of video views at ACL last year. Model interpretability is now so mainstream there are books on the topic and corporate services promising it. So what's the state of research on this topic? What does progress in interpretability look like, and are we making progress? What is this post? This post summarizes 70 recent papers on model transparency, interpretability, and explainability, limited to a non-random subset of papers from the past 3 years or so. We also give opinions on several active areas of research, and collate another 90 papers that are not summarized. How to read this post. If you want to see high-level opinions on several areas of interpretability research, just read the opinion section, which is organized according to our very ad-hoc set of topic areas. If you want to learn more about what work looks like in a particular area, you can read the summaries of papers in that area. For a quick glance at each area, we highlight one standout paper per area, so you can just check out that summary. If you want to see more work that has come out in an area, look at the non-summarized papers at the end of the post (organized with the same areas as the summarized papers). We assume readers are familiar with basic aspects of interpretability research, i.e. the kinds of concepts in The My