비선형회귀모형에서 특이값 및 영향값을 평가하기 위한 불꽃그림

Abstract

Outliers can distort many measures for data analysis. Jang and Anderson-Cook (2014) proposed a new set of graphical summaries, called firework plots, as simple tools for evaluating the impact of outliers in regression assessment. One variation of the plot focuses on the impact on the estimated parameters and the estimated standard deviation by using curves based on the relative contribution to the overall summary as weights for individual observations are changed from 1 to 0 in a nonlinear regression analysis. Similarly, other variations for a nonlinear regression allow the practitioners to examine the impact of changing weights on combinations of the estimated regression coefficients and the standard error with the pairwise firework plot matrix.