Hi I'm using recommendation action sets.
There is ratioinfo option in recomAls and recomKnnTrain action . well I can't find information about why ratioinfo affects model I made.
is it for considering bias of user?
please help me!
proc cas; recommend.recomKnnTrain result=r / table='ratings_by_user' label='knn3' system='movieRecommend' similarity='similar_items' k=20 hold='holdout_users' rateinfo='avg_user' user=False; run; print r; run; proc cas; recommend.recomAls result = r / tableU="ratings_by_user" tableI="ratings_by_item" system="movieRecommend" label="als1" casOutU={name="als_u1" replace=true} casOutI={name="als_i1" replace=true} rateinfo="avg_user" maxIter=20 hold = "holdout_users" seed = 1234 details = True k=50 /*fconv=1e-6 */ stagnation = 10 threshold = 0.1 ; run;
Hi @jhw_,
Do you mean rateinfo vs ratioinfo? If so, you can find more info in SAS Documentation for recomAls Action. rateinfo has the following definition:
specifies the in-memory table that contains the rating summary information. Typically, the table contains the average rating for an item or the average rating by a user. The recomRateinfo action can be used to create these tables.
Moreover recomRateInfo action has the following:
Summarizes rating information.
Hope this is what you were looking for.
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