I've been using this for the past month or so in Beta and it's fantastic. I'm a DS at an NLP startup and it's totally changed the way we develop new tagging and classification models (and how we explore unlabelled data more generally).
It allows us to leverage domain expertise much more quickly and efficiently. Since we we can extrapolate from just a handful of examples, we can "solve" the easy parts of the dataset and get to "the crux" of the labelling problems much faster. The app also allows data scientists to interact deeply with the data in a way that is productive and meaningful, as it forces you to think like a model. This ultimately leads to faster model development cycles.
In a way, the weak labels generated are just a nice bonus for us!
