A modified test for detecting influential decision-making units in data envelopment analysis

Year 2018, Volume: 47 Issue: 1, 129 - 144, 01.02.2018

İrmak Acarlar , Sinem Tuğba Şahin Tekin , H. Hasan Örkcü

Abstract

In data analyses based on a deterministic or stochastic approach, using pre-study is very important to identify observations that are not suitable to data in general. Among such observations, those that have a high tendency to change results negatively are called influential observations. In this paper, we propose a new method to identify influential observations in Data Envelopment Analysis (DEA). Our method is a modified version of the one proposed by Pastor et al. [12]. Both methods are compared by using two well-known data sets and the outcomes are discussed. A comparative analysis indicates that our method is an effective alternative to the Pastor et al. [12] method to identify influential observations in DEA.

Keywords

Data Envelopment Analysis, inuential observations, super efficiency, likelihood ratio test, statistical hypothesis test

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