Seite - 910 - in Book of Full Papers - Symposium Hydro Engineering

Table 2 Load coefficients of the principal components Comp onent 1 X 2X 3X 4X 5X 6X 7X 8X 9X 10X 11X 1Y 0.670 0.650 0.663 0.499 0.085 0.460 0.292 0.736 0.822 0.835 0.806 2Y 0.715 0.737 0.720 0.162 0.154 0.372 0.298 0.434 0.535 0.527 0.498 3Y 0.055 0.057 0.029 0.133 0.682 0.368 0.747 0.091 0.074 0.073 0.142 4Y 0.045 0.075 0.107 0.529 0.615 0.378 0.278 0.026 0.065 0.067 0.033 5Y 0.019 0.005 0.016 0.639 0.311 0.252 0.240 0.295 0.109 0.050 0.068 According to the results, the variance contribution rates of the principal component 1Y , 2Y , 3Y , 4Y and 5Y are 40.264%, 25.9234%, 11.121%, 8.250% and 6.666% respectively. The cumulative variance contribution rate of the first five principal components is 92.224%. It is shown that the former five principal components can reflect more than 90% of information from the original 11 components. Therefore, the first five principal components are selected as the input variables of the model. The expressions of the five principal components are as follows: 1 1 2 3 4 5 6 7 8 9 10 11 0.670 0.650 0.663 0.085 0.460 0.292 0 0. .7 4 36 0.822 0.835 0.80 99 6 Y X X X X X X X X X X X             [3] 2 1 2 3 4 5 6 7 8 9 10 11 0.715 0.737 0.720 0.154 0.372 0.298 0.434 0.535 0.527 0.49 0162 8 .Y X X X X X X X X X X X            [4] 3 1 2 3 4 5 6 7 8 9 10 11 0.055 0.057 0.029 0.682 0.368 0.747 0.091 0.074 0.073 0.14 0133 2 .Y X X X X X X X X X X X            [5] 4 1 2 3 4 5 6 7 8 9 10 11 0.045 0.075 0.107 0.615 0.378 0.278 0.026 0.065 0.067 0.03 0529 3 .Y X X X X X X X X X X X            [6] 910