One fun thing I discovered about Visual Chatbot: no matter what the photo is of, it will always report there are at least a couple giraffes.
It learned from answers that humans gave, and apparently nobody ever asked "how many giraffes are there?" when the answer was zero.
@C1710 @janellecshane Yes, I wondered what UNK meant too! It seems to be Visual Chatbot's favourite word!
@dominicduffin1 @C1710 I'm pretty sure it's short for "unknown". Rare vocab gets replaced with this, as a way of keeping track of fewer words in the model.