variance estimation and cross-validation

) are small. Is there a better way? Is there any way to establish a confidence interval on the estimate? Thanks Mark Mark Everingham Phone: +44 117 9545249 Room 1.15 Fax: +44 117 9545208

Q: conditional probability

(Ri,F) =P(Li|Rj,F)P(Ri,Fi) ...? Knowing that P(Li|F)=P(Li|Fi) can I simplify P(Li|Rj,F) further? Mark -- Mark Everingham Phone: +44 117 9545249 Room 1.15 Fax: +44 117 9545208 Merchant