Product performance evaluation: a super-efficiency model Online publication date: Mon, 04-Apr-2005
by Matthias Staat, Maik Hammerschmidt
International Journal of Business Performance Management (IJBPM), Vol. 7, No. 3, 2005
Abstract: This study introduces the concept of product performance from the perspective of customers. Product performance is measured as a ratio of outputs that customers obtain from a product relative to inputs that customers have to spend for purchasing and using the product. The output side is modelled by a set of customer-relevant parameters such as technical performance attributes but also non-functional benefits and brand strength; the input side reflects user costs. More than 60% of the cars in this study are rated as efficient and obtain the maximum efficiency value of unity. They form the efficient frontier of the compact car market representing a reference function for performance evaluation. Using a super-efficiency model, it is possible to differentiate the efficient products that are left with a score of 100% by standard efficiency models. Our approach is relevant for companies because implications for product design and market segmentation can be derived.
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