Abstract
This paper presents a new algorithm for determining radial efficiency with a large data set by using small-size linear programs (LPs). Instead of trying to “reduce” the size of individual LPs, the proposed algorithm attempts to “control” the size of individual LPs, e.g., no more than 100 data points each time while maintaining the solution quality. The algorithm is specifically designed to address the problem of LP size limitation. From the empirical results, we conclude that the proposed algorithm can converge within a reasonable number of iterations without incurring extra computation time and has savings of up to 60 % of the benchmarks when the data set contains 15,000 points.
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Notes
The data set is publicly available at http://nirvana.iem.nctu.edu.tw/wenchih/DEAdata.
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Acknowledgments
This research is partially supported by grants from the Ministry of Science and Technology, Taiwan (NSC 100-2628-E-009-005 and 101-2628-E-009-009-MY3). We thank the editor and anonymous referees for their thoughtful suggestions; any errors remaining in the paper are our own. We thank Professor Jose Dulá for providing the banking data set for computational testing.
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Chen, WC., Lai, SY. Determining radial efficiency with a large data set by solving small-size linear programs. Ann Oper Res 250, 147–166 (2017). https://doi.org/10.1007/s10479-015-1968-4
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DOI: https://doi.org/10.1007/s10479-015-1968-4