Browsing Dr Sajesh T A by Issue Date

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Sn covariance

Kunjunni, Sajana O; Abraham, Sajesh T (Taylor & Francis Online, 2019-06-16)

Main purpose of this paper is to study a robust measure of estimating dependence between random variables that can be used as an alternative to classical covariance estimator. An efficient univariate nested L-estimator ...
Multidimensional outlier detection and robust estimation using Sn covariance

Kunjunni, Sajana O; Abraham, Sajesh T (Taylor & Francis Online, 2020-02-17)

This article presents a robust method for detecting multiple outliers from multidimensional data using robust Mahalanobis distance. Initial scatter matrix for robust Mahalanobis distance is constructed using a robust ...
Robust quadratic discriminant analysis using Sn covariance

Sajana, OK; Sajesh, TA (Taylor & Francis, 2021-03-15)

This paper presents a robust method for robust estimation of quadratic discriminant analysis. The mean and covariance matrix for estimating quadratic discriminant rule is computed using a robust estimation method called ...

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