@article{oai:grips.repo.nii.ac.jp:00001384,
 author = {TONE, Kaoru},
 issue = {B-7},
 journal = {Institute for Policy Science research report. B},
 month = {Oct},
 note = {In this paper, we will discuss subjects related to virtual multipliers in the cone-ratio model in DEA. Usually, there exists ambiguity in the virtual multipliers in the polyhedral cone-ratio method when some exemplary efficient DMUs' multipliers are employed as the admissible directions of the cone. Firstly, we will show a convex cell subdivision of the multiplier simplex. Then, three practical methods for resolving this ambiguity will be presented with an example.},
 title = {An Observation on the Cone-Ratio Model in Data Envelopment Analysis},
 volume = {94},
 year = {1994}
}