Not to mention out-of-domain performance. I'm not familiar with computer vision, but in NLP taggers are hovering around human-level performance, and parsers ar

Not to mention out-of-domain performance. I'm not familiar with computer vision, but in NLP taggers are hovering around human-level performance, and parsers are quickly approaching that level. But if you take a state-of-the-art system and test it on a slightly different corpus (even something as simple as text from the same newspaper, but a year later!) performance drops by a lot.