Tool to perform sensitivity analysis on the fitted model using local influence measures.
influence extracts from a object of class “ssym" the local influence measures and displays their graphs versus the index of the observations.
Luis Hernando Vanegas <hvanegasp@gmail.com> and Gilberto A. Paula
Cook, R.D. (1986). Assessment Local Influence (with discussion). Journal of the Royal Statistical Society Series B (Methodological). 48, 133-169.
Poon, W.Y. and Poon, Y.S. (1999). Conformal Normal Curvature and Assessment of Local Influence. Journal of the Royal Statistical Society Series B (Methodological). 61, 51-61.
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