[week 12] Muddiest Points

Whereas the term gets closer to its end, my posts get shorter... well my two cents:

1. In slide 37, Dr He introduced active feedback, but I missed additional references on this topic, Is there more research on AF mechanisms?

2. Is there any explanation to understand why click-through data produces more improvement than history of queries in active feedback?

That's it, I'll be looking forward to see one of my questions answered during next week class :)