> Google has discovered that it takes 90% of the effort to get 90% of the way there - but the last 10% takes the next 90% of the effort. I can confirm, I am wo

> Google has discovered that it takes 90% of the effort to get 90% of the way there - but the last 10% takes the next 90% of the effort. I can confirm, I am working on information extraction and 90% is the glass ceiling for current models. With much labelled data you can get higher scores but they don't generalise from one vendor to another.