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;
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