Error: Rp(ykjxk)p(xkjy1:k�1)dxk:(4)theoptimalsmoothingequations[14]ofthemodelcanbewrittenintwoalternativeforms[33]preprint21)two ltersmoother:p(xkjy1:t)p(xkjy1:k)p(yk 1:tjxk);(5)wherethersttermontheright - PowerPoint Presentations and PDF Documents