ocr: 600 Model1t8PCS SOOR Model2:3PCs 4001 E 300 LEE 0 2006 1001 DE 100 - 10 20 0: 40 50 60 70 80 90 100 Day Figure 3: Typical performanco gain in basis points] for 100 days u51n9 tvo: competing models. No single choice of number of principal components achieves consistent performance.