The Doppler Quarterly Summer 2019 | Page 75

magic bullet exists to solve this problem, but there are many different approaches being pursued. However, there is an important consensus that as of today, explainability methods typically somewhat reduce the accuracy of the models, in favor of supporting a greater level of explainabil- ity. It is also necessary to understand that in these approaches, the explainability achieved is not absolute, but rather should be thought of as an increase in “confidence level.” As a result, it makes sense to selectively apply XAI approaches with the balance of accuracy vs. explainability that is appropriate to each use case. Takeaway: Ethics surrounding the use of AI will only become more important to business over time. Any enter- prise utilizing AI will need methods, processes and possibly roles, dedicated to proactively assessing whether there are ethical implications for AI-related projects, and addressing them accordingly. Adversarial AI A fairly recent development attracting attention in the field of AI is called “adversarial AI.” It turns out that in many cases, a model that is very good at visual or audio recogni- tion can be fooled by what humans would consider extremely subtle alterations of the image or audio signal being analyzed. While these changes are not perceptible to a human, they can cause a model to decide that, for exam- ple, an image of a turtle is instead an image of a gun. Alter- ations intentionally introduced through sophisticated tech- niques to trick a perceptual AI are called adversarial AI, which, understandably, has generated significant concern. One can imagine numerous scenarios where tricking a model into producing specific errors could be disastrous, such as in autonomous vehicles, weapons detection or medical diagnostics. A couple of points to note about the development of adver- sarial AI. First, it is generally agreed that as of this point in time, no usages of these techniques for malicious purposes have been discovered in the wild. All currently known exam- ples of adversarial AI have been created by researchers in an effort to understand, anticipate and prepare defenses against future attacks. Secondly, researchers are simultane- ously working on defenses against adversarial AI, including using another layer of AI specifically to detect adversarial AI! Takeaway: Adversarial AI may not yet be an active concern for your company, but it is certain to be a growing focus over time. Keep watch on this topic, and include it as an item to consider when evaluating risks associated with potential AI-related projects. Conclusion AI is a vast movement in industry and in our culture, so the topics discussed above are certainly not exhaustive, nor is the level of detail. But we do feel that an organization would be wise to ensure it is familiar with these developments, as it considers AI-based offerings and features. The benefits of AI are simply too great to ignore, plus, if you do not take advantage of those benefits, your competitors certainly will! SUMMER 2019 | THE DOPPLER | 73