Year Adhoc MI(logistic) MI(rf ) Weighting 2004 4.57 1.73 1.79 1.42 2005 3.44 0.77 1.49 0.74 2006 11.86 4.10 5.28 3.90 2007 3.59 1.04 0.99 0.62 2008 5.99 1.16 2.10 0.60 2009 302.35 84.08 102.03 128.90

Table 2: Relative sum of absolute errors (RAE) for each method compared with the AR method. RAE is defined as the AE of the corresponding method divided by that of the AR method. The RAE for the year 2009 is very high since the sum of absolute error for AR is very small (0.006%).