Comp Sci Cold Start & Early Rater: Making Predictions with Limited Data

[shivajikobardan]

Homework Statement

what is difference between cold start vs early rater problem in collaborative filtering-recommender system?

Relevant Equations

none

cold start-: system requires huge amt of current user data to make accurate predictions

early rater-: new user hasn't rated many items to make predictions.

both same? isn't it?

 

[Mark44]

Homework Statement:: what is difference between cold start vs early rater problem in collaborative filtering-recommender system?
Relevant Equations:: none

cold start-: system requires huge amt of current user data to make accurate predictions

early rater-: new user hasn't rated many items to make predictions.

both same? isn't it?

I'm not familiar with these terms at all, but having said that, they seem very different to me.
My take:
cold start-: system requires huge amt of current user data to make accurate predictions
early rater-: very little existing user data (paraphrase)

 

[FactChecker]

I am also unfamiliar with this subject, but I might suggest this difference just from the brief descriptions given.
It sounds like a cold start would have no data from anyone, whereas the early rater may have a lot of data from other users but little data from the new user. So the early rater might start from the initial rating of the other users and adjust that as the new user enters ratings. The cold start can not do that.

 

[shivajikobardan]

I'm not familiar with these terms at all, but having said that, they seem very different to me.
My take:
cold start-: system requires huge amt of current user data to make accurate predictions
early rater-: very little existing user data (paraphrase)

thanks

 

[shivajikobardan]

I am also unfamiliar with this subject, but I might suggest this difference just from the brief descriptions given.
It sounds like a cold start would have no data from anyone, whereas the early rater may have a lot of data from other users but little data from the new user. So the early rater might start from the initial rating of the other users and adjust that as the new user enters ratings. The cold start can not do that.

thank you