Because of data envelopment analysis (DEA) flexibility in the choice of weights, assessment of decision-making units (DMUs) often involves weighting only a few inputs and outputs and ignoring the remaining variables by assigning them a zero weight. Widespread literature indicates the need to avoid zero weights, and some authors claim that the fact that a given DMU attaches very different weights to the variables involved in the assessments may be a concern (see, for example, Cooper, Seiford, & Tone, 2007). The aim of this paper was to prevent unrealistic weighting schemes in cross-efficiency evaluations through an extension of the multiplier bound approach (Ramón, Ruiz, & Sirvent, 2010a) based on “model” DMUs. The approach in that paper guarantees nonzero weights while at the same time it tries to avoid large differences in the values of multipliers. An application to the ranking of...

This case analyzes what elements could entail in the United Stated industrial policy, giving a special emphasis on permanent changing modern high-tech industries environment. At the same time, it is sought to demonstrate that the correct orientation should be aimed to the intensive research and closely related to technological developments. It is argued that change and a flexible response are the necessary ingredients of an industrial policy aimed to meet the requirements of this industry. It specifically focuses on semiconductor companies to illustrate what sector like this could entail for public policy. This sector faces in complex ways a situation of continuous change and interaction through all the stages and processes from products. The behavior of this industry leads to misinterpretations and can lead to apply wrong policies.

This case analyzes what elements could entail in the United Stated industrial policy, giving a special emphasis on permanent changing modern high-tech industries environment. At the same time, it is sought to demonstrate that the correct orientation should be aimed to the intensive research and closely related to technological developments. It is argued that change and a flexible response are the necessary ingredients of an industrial policy aimed to meet the requirements of this industry. It specifically focuses on semiconductor companies to illustrate what sector like this could entail for public policy. This sector faces in complex ways a situation of continuous change and interaction through all the stages and processes from products. The behavior of this industry leads to misinterpretations and can lead to apply wrong policies.