Summer 2015،Volume 1- Number 2 (12 صفحه - از 55 تا 66)
This study examines the productivity changes of decision making units in situation where input price vectors are varying between them and inputs are heterogeneous; that is a non- competitive market. We present a directional measure of cost Malmquist productivity index where incorporates the decision maker's preference over productivity change over time. A simple numerical example is designed to illustrate the new measure of the cost Malmquist index.
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