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2009 Mar 11
1
prediction error for test set-cross validation
...I have a database of 2211 rows with 31 entries each and I manually split my data into 10 folds for cross validation. I build logistic regression model as: >model <- glm(qual ~ AgGr + FaHx + PrHx + PrSr + PaLp + SvD + IndExam + Rad +BrDn + BRDS + PrinFin+ SkRtr + NpRtr + SkThck +TrThkc + SkLes + AxAdnp + ArcDst + MaDen + CaDt + MaMG + MaMrp + MaSh + SCTub + SCFoc + MaSz, family=binomial(link=logit)); Where the variables are taken from the trainSet of size 1989x31. The test set is sized 222x31. Now my question is when I try to predict on the test set it...