Journal
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
Volume 197, Issue 1, Pages 332-339Publisher
ELSEVIER
DOI: 10.1016/j.ejor.2008.05.028
Keywords
Returns to scale; Distance function; Productivity growth; Malmquist index
Ask authors/readers for more resources
This contribution proposes a specification of strictly increasing and decreasing returns to scale in multi-output technologies. Along this line a notion of a-returns to scale is derived from that of homogeneous multi-output technology. For a large class of technologies we establish necessary and sufficient conditions characterizing strictly increasing and strictly decreasing returns to scale to scale. Furthermore, a relationship between input, output and graph distance functions is established. These connections lead naturally to a link between the various Malmquist indexes and the Chavas-Cox productivity index. Finally. we show that these concepts can be implemented in a DEA context using a piecewise homogeneous constant elasticity substitution-transformation model due to [Fare, R., Grosskopf, S., Njinkeu, D., 1988b. On piecewise reference technologies. Management Science 34, 1507-1511]. (C) 2008 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available