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Are you suggesting that the next contest should improve the winner of this contest by 10%? That seems like you're already well into diminishing returns territor

• profquail 17y ago
  Maybe not, if they offered a more descriptive dataset next time. I think the only data offered was (customer_rating, movie_id, rating_value, date). If they included things like the customer's age, how long they've used Netflix, and other such data that's on file, I'm guess that the RMSE could be improved by a fairly good amount (at least 5%, if not 10%).
• jacquesm 17y ago
  11% of the 90% they've got now is 10% of the original (or close enough for government work).