Author : Lect. Durayd Hussein Badr, Asst.
Basra studies journal,
Volume 15, Issue 1994, Pages 279-309
In this research I've tired to find out to robust and efficient estimations mean vector (location parameter) and, variance covariance matrix (scull parameter) for linear and quadratic discriminant functions. And also attempting to provide the robust linear and quadratic discriminant functions in the case of existing outliers resents through using some of high quality robust methods estimation. of these methods are minimum covariance determinant estimator, reweighed minimum covariance determinant estimator and minimum volume ellipsoid estimator , moreover , comparing robust discriminant functions with classical discriminant functions to draw out the best discriminant function in order to diagnose two types of diagnosis diseases heart which are angina pectoris and clot hearty .