Home modified by Choonjoo Lee

Choonjoo Lee — Fri, 19 Jun 2026 15:07:13 -0000

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 ## Title

+```text
 DEAS v2.0: unified Stata command for Data Envelopment Analysis
-
+```

 ## Announcement

+```text
 DEAS v2.0 is now available as a major update to the Stata Data Envelopment
 Analysis package.

Home modified by Choonjoo Lee

Choonjoo Lee — Fri, 19 Jun 2026 15:06:32 -0000

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-Welcome to Data Envelopment Analysis using Stata(DEAS)!
+## Title

-The goal of this project is to develop a Data Envelopment Analysis(DEA) program using Stata programming language.
-We call the program package "DEAS" which stands for Data Envelopment Analysis using Stata. 
-DEAS covers the basic models of DEA and extensions including CCR, BCC, SBM, Super-efficiency Model, Allocative Model(Profit, Revenue, Cost), (Global) Malmquist Productivity Index Model, Imprecise DEA, Additive DEA Model, Virtual Price Model, and user written models on Productivity and Efficiency Analysis.
+DEAS v2.0: unified Stata command for Data Envelopment Analysis
+
+
+## Announcement
+
+DEAS v2.0 is now available as a major update to the Stata Data Envelopment
+Analysis package.
+
+The main change is that the package is now organized around one unified command:
+

+    dea ..., model(...)
+
+The command keeps the original DEA-style syntax:
+
+    dea inputs = outputs, options
+
+and also supports an extended Stata-style syntax:
+
+    dea outputs, inputs(inputs) options
+
+Both forms produce the same results. This means older do-files remain usable,
+while new work can use a more explicit option-based style.
+
+Recommended first download
+--------------------------
+
+Start with:
+
+    deas_v2_0_stata_package.zip
+
+This file contains the ado-files, help files, quick-start guide, one teaching
+dataset, and the main article example do-file. Most users only need this file
+to begin using the new command.
+
+Other downloads
+---------------
+
+    deas_v2_0_article_supplement.zip
+
+contains the author-prepared forthcoming Stata Journal article materials, online
+supplement, figures, and LaTeX source. Article manuscript files are covered by
+ARTICLE_REUSE_NOTICE.md, not the software license.
+
+    deas_v2_0_replication_examples.zip
+
+contains the article examples, OECD education application, validation scripts,
+logs, datasets, and figure-generating do-files.
+
+    deas_v2_0_full_archive.zip
+
+contains the complete accepted-file archive.
+
+Quick start
+-----------
+
+After downloading and unzipping deas_v2_0_stata_package.zip, open Stata in the
+unzipped folder and type:
+
+    adopath ++ "`c(pwd)'"
+    which dea
+    help dea
+
+Then run the included teaching example:
+
+    use dea_6dmu.dta, clear
+    dea i_employee i_area = o_sales o_profits, rts(crs) gen(eff_crs)
+    dea i_employee i_area = o_sales o_profits, rts(vrs) gen(eff_vrs) reference
+    dea i_employee i_area = o_sales o_profits, model(sbm) rts(vrs) gen(eff_sbm)
+
+Main features
+-------------
+
+- Sixteen DEA model families through one dea command.
+- Backward compatible inputs = outputs syntax.
+- Extended syntax using inputs().
+- CCR/BCC radial technical efficiency.
+- SBM, additive model, radial super-efficiency, and Super-SBM.
+- Cost, revenue, profit, and allocative efficiency.
+- Directional distance function.
+- FDH, imprecise DEA, fuzzy DEA, congestion, and undesirable outputs.
+- Malmquist, window, network, cross-efficiency, and bootstrap extension commands.
+- Fast Mata simplex engine and optional Stata LinearProgram() IPM engine.
+- engine(auto) fallback for numerical robustness.
+- Standardized r() results for easier post-estimation workflows.
+
+Notes on game-theoretic commands
+--------------------------------
+
+The release also includes game-theoretic DEA commands for cross-efficiency
+games, Nash-style bargaining, Stackelberg-style two-stage diagnostics, and
+cooperative allocation. These are included as research-oriented diagnostic
+tools. They should not be read as fully validated structural game estimators.
+
+Documentation
+-------------
+
+Use:
+
+    help dea
+
+for the main command. Extension commands have separate help files, for example:
+
+    help dea_malmquist
+    help dea_crosseff
+    help dea_bootstrap
+    help dea_fuzzy
+
+The forthcoming Stata Journal article and online supplement provide additional
+model descriptions, implementation details, computational benchmarks,
+validation notes, and OECD education examples.
+
+Copyright and reuse
+-------------------
+
+The Stata software files are distributed under AFL-3.0; see LICENSE_CODE.txt.
+Article manuscript files, if included, are author-prepared
+forthcoming/accepted-manuscript materials and are governed separately by
+ARTICLE_REUSE_NOTICE.md. The final published Stata Journal PDF should not be
+redistributed through SourceForge or GitHub unless publisher permission or
+policy explicitly allows it.
+
+Feedback
+--------
+
+Please use the SourceForge Discussion or Support page for bug reports,
+installation problems, unclear examples, or requests for additional worked
+examples.
+```
+
+## Short Announcement Variant
+
+Use this shorter version if the Discussion page should stay compact.
+
+```text
+DEAS v2.0 is now available.
+
+This is a major update centered on one unified Stata command:
+
+    dea ..., model(...)
+
+It supports sixteen DEA model families, keeps the original inputs = outputs
+syntax, adds an extended inputs() syntax, and includes both a fast Mata simplex
+engine and Stata's LinearProgram() IPM engine.
+
+New users should start with:
+
+    deas_v2_0_stata_package.zip
+
+It contains the ado-files, help files, quick-start guide, sample dataset, and
+article example do-file.
+
+After unzipping, open Stata in the package folder and run:
+
+    adopath ++ "`c(pwd)'"
+    help dea
+    use dea_6dmu.dta, clear
+    dea i_employee i_area = o_sales o_profits, rts(crs) gen(eff_crs)
+
+Additional archives provide author-prepared forthcoming Stata Journal article
+materials, the supplement, replication examples, validation scripts, logs,
+datasets, and the full accepted-file archive. Article manuscript files are not
+covered by the software license; see ARTICLE_REUSE_NOTICE.md.
+```

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WikiPage Home modified by bloom.rampike

bloom.rampike — Sat, 05 Jan 2013 07:29:38 -0000

--- v1
+++ v2
@@ -1,8 +1,8 @@
-Welcome to your wiki!
+Welcome to Data Envelopment Analysis using Stata(DEAS)!

-This is the default page, edit it as you see fit. To add a new page simply reference it within brackets, e.g.: [SamplePage].
-
-The wiki uses [Markdown](/p/deas/wiki/markdown_syntax/) syntax.
+The goal of this project is to develop a Data Envelopment Analysis(DEA) program using Stata programming language.
+We call the program package "DEAS" which stands for Data Envelopment Analysis using Stata. 
+DEAS covers the basic models of DEA and extensions including CCR, BCC, SBM, Super-efficiency Model, Allocative Model(Profit, Revenue, Cost), (Global) Malmquist Productivity Index Model, Imprecise DEA, Additive DEA Model, Virtual Price Model, and user written models on Productivity and Efficiency Analysis.

 [[project_admins]]
 [[download_button]]

Discussion for Home page

bloom.rampike — Thu, 03 Jan 2013 14:06:41 -0000

The goal of this project is to develop a Data Envelopment Analysis(DEA) program using Stata programming language.
We call the program package "DEAS" which stands for Data Envelopment Analysis using Stata.
DEAS covers the basic models of DEA and extensions including CCR, BCC, SBM, Super-efficiency Model, Allocative Model(Profit, Revenue, Cost), (Global) Malmquist Productivity Index Model, Imprecise DEA, Additive DEA Model, Virtual Price Model, and more.

WikiPage Home modified by bloom.rampike

bloom.rampike — Thu, 03 Jan 2013 13:23:03 -0000

Welcome to your wiki!

This is the default page, edit it as you see fit. To add a new page simply reference it within brackets, e.g.: [SamplePage].

The wiki uses Markdown syntax.

bloom.rampike

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