Product-level Sparrow

[jonasz]

Hi all,

At RTB House we have been working on ways to improve recommendation quality under Turtledove and Sparrow. We've put together a document describing one possible approach, together with high level estimates on CTR impact.

For the sake of discussion the document focuses on Turtledove, but the core ideas are also compatible with Sparrow. It would be great to hear your thoughts and suggestions.

https://github.com/jonasz/product_level_turtledove

Best regards,
Jonasz