Talk:Data envelopment analysis

	Business and economics portal This article is within the scope of WikiProject Economics, a collaborative effort to improve the coverage of Economics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.EconomicsWikipedia:WikiProject EconomicsTemplate:WikiProject EconomicsEconomics articles
???	This article has not yet received a rating on the project's importance scale.

Systems

	Systems science portal This article is within the scope of WikiProject Systems, which collaborates on articles related to systems and systems science.SystemsWikipedia:WikiProject SystemsTemplate:WikiProject SystemsSystems articles
???	This article has not yet received a rating on the project's importance scale.
	This article is within the field of Operations research.

This article needs to be made much more clear as an introduction to the subject.

The section titled "The traditional DEA framework" is lifted verbatim from "Performance Evaluation in Stochastic Environments Using Mean-Variance Data Envelopment Analysis" by Thierry Post in Operations Research, Vol. 49, No. 2 (Mar. - Apr., 2001), pp. 281-292. As the Wikifier, I am not sure what to do as the "contributor" of this change, Nikolekidman, has no talk page. Would rolling back just this change be the right thing to do? Catfood73 07:35, 31 December 2006 (UTC)[reply]

I've removed the section since copyright violations are not allowed. -- Barrylb 08:27, 31 December 2006 (UTC)[reply]

Econometrics?

For now I have changed Econometrics to Economics in the introductory sentence. I think this is less ambigous since the previous version introduces DEA as a tool of econometrics yet I am not sure whether this is right. To me it appears that some parts of the literature introduce DEA as an alternative to econometric methods (also none of the standard (& advanced) econometrics textbooks discuss DEA (e.g. Winston and Greene, Hayashi, Madalla)). The main argument of this type of literature is that DEA is based on envelopment techniques, i.e. linear programming, which connects it to mathematics rather than econometrics. On the other hand the Journal of Econometrics published a considerable amount of articles on DEA (one that gives a good introduction to DEA is Seiford and Thrall (1990)). Also maybe one could use this paper to make the article clearer and better to understand! --Karina.l.k 11:05, 15 February 2007 (UTC)[reply]

Blatant Ads

If anything references to OR Software belong to External Links section. But seeing as DEA is only partially related to OR this link is unnecessary and looks like an Ad to me. Therefore I removed it. Karina.l.k 19:43, 14 March 2007 (UTC)[reply]

Reference to "on using DEA for bench marking container port terminals" M.B.M. de Koster , B.M. BAlk and W.T.I. van Nus, Rotterdam , Th Netherlands — Preceding unsigned comment added by 14.139.123.58 (talk) 09:21, 8 November 2013 (UTC)[reply]

Graphs

Having some graphs to illustrate the concept wouldnt be bad.Lbertolotti (talk) 21:24, 26 April 2013 (UTC)[reply]

Dr. Onour's comment on this article

Dr. Onour has reviewed this Wikipedia page, and provided us with the following comments to improve its quality:

In the sample application section, the linear programming part, is some what confusing, as a result I would suggest the following modification:
Max efficiency = U1*100 Subject to: V1*10 + V2*2 =1 U1*100 – (V1*10 + V2*2) (less than or equal to) 0 U1*80 – (V1*8 + V2*4) (less than or equal to) 0 U1*120 - (V1*12 + V2*1.5) (less than or equal to) 0 And non-negativity constraints
All U and V non-negative numbers

We hope Wikipedians on this talk page can take advantage of these comments and improve the quality of the article accordingly.

Dr. Onour has published scholarly research which seems to be relevant to this Wikipedia article:

Reference : onour, Ibrahim, 2015. "Efficiency of sugar industry in Sudan: Data Envelopment Analysis," MPRA Paper 61821, University Library of Munich, Germany.

ExpertIdeasBot (talk) 14:42, 21 May 2016 (UTC)[reply]

Dr. Kuosmanen's comment on this article

Dr. Kuosmanen has reviewed this Wikipedia page, and provided us with the following comments to improve its quality:

This article is so weak (misleading, poorly structured, outdated and biased) that it would be easier to delete it and write a proper one from the scratch.

We hope Wikipedians on this talk page can take advantage of these comments and improve the quality of the article accordingly.

Dr. Kuosmanen has published scholarly research which seems to be relevant to this Wikipedia article:

Reference 1: Timo Kuosmanen, 2006. "Valuing Environmental Factors in Cost-Benefit Analysis Using Data Envelopment Analysis," Working Papers 2006.96, Fondazione Eni Enrico Mattei.

Reference 2: Vincent M. Otto & Timo Kuosmanen & Ekko C. van Ierland, 2006. "Estimating Feedback Effect in Technical Change: A Frontier Approach," Working Papers 2006.27, Fondazione Eni Enrico Mattei.

ExpertIdeasBot (talk) 11:08, 28 May 2016 (UTC)[reply]

Dr. Ray's comment on this article

Dr. Ray has reviewed this Wikipedia page, and provided us with the following comments to improve its quality:

I have strong disagreement with how the authors have described/explained DEA in the existing entry in Wikipedia. I have taken the liberty of writing an entirely new entry. https://drive.google.com/file/d/0B8-wWhGFpGYCU1ZfdlRWYjF2TDQ/view?usp=sharing

We hope Wikipedians on this talk page can take advantage of these comments and improve the quality of the article accordingly.

We believe Dr. Ray has expertise on the topic of this article, since he has published relevant scholarly research:

Reference 1: Subhash C. Ray, 2013. "Nonparametric Measures of Scale Economies and Capacity Utilization: An Application to U.S. Manufacturing," Working papers 2013-09, University of Connecticut, Department of Economics.

Reference 2: Subhash C. Ray, 2014. "Branching Efficiency in Indian Banking: An Analysis of a Demand-Constrained Network," Working papers 2014-34, University of Connecticut, Department of Economics.

ExpertIdeasBot (talk) 15:53, 28 September 2016 (UTC)[reply]

The document looks very helpful. Thank you Dr. Subhash Ray and project creating and running ExpertIdeasBot. I will try over time to draw in materials from Dr. Ray's document and the other sources. Is his documentary submission in the public domain, or licensed for free reuse? If not I must rephrase everything. -- econterms (talk) 18:25, 1 November 2016 (UTC)[reply]