We propose a two-stage procedure for finding realistic benchmarks for nonparametric efficiency analysis. On the first stage the efficient DMUs are figured out by a free disposal hull approach. These benchmarks are directly targeted by directional distance functions and the extent of inefficiency...

Chapter 1: Introduction -- Chapter 2: Conceptual background: firms’ objectives, decision variables and economic efficiency -- Part I -- Chapter 3: Shephard’s input and output distance functions: cost and revenue efficiency decompositions -- Chapter 4: The generalized distance function (GDF):...

Chapter 1. Data Envelopment Analysis and Big Data: Revisit with a Faster Method -- Chapter 2. Data Envelopment Analysis (DEA): Algorithms, Computations, and Geometry -- Chapter 3. An Introduction to Data Science and Its Applications: an Introduction to Data Science and Its Applications --...

Chapter 1. Introduction -- Chapter 2. New Definitions of Economic Cross-Efficiency -- Chapter 3. Evaluating Efficiency in Non-Homogeneous Environments -- Chapter 4. Testing Positive Endogeneity in Inputs in Data Envelopment Analysis -- Chapter 5. Modelling Pollution-Generating Technologies: A...

We conduct an empirical analysis of the technical efficiency of cars sold in Germany in 2010. The analysis is performed using traditional data envelopment analysis (DEA) as well as directional distance functions (DDF). The approach of DDF allows incorporating the reduction of carbon dioxide...