News

This is where you can find the latest annoucement of the Open Source DEA project.

Latest news
[2012-09-05] OSDEA-GUI-v0.1 has been released. This is the first release. OSDEA-GUI runs on windows and linux (not tested on MAC/OSX although it could work).

[2012-07-28] OSDEA-v0.287 has been released. DEA Problem can now be solved for a given DMU. The library also returns the efficiency status for each DMU.

[2012-03-26] OSDEA-v0.262 has been released. This version includes the lpsolve libraries for Mac and Linux systems. Installation instructions were also updated. Release includes some refactoring.

Archives
[2012-03-04] OSDEA-v0.257 has been released. This version fixes a few bugs and includes a lot of refactoring. The DEAProblem and DEASolution classes are now serialisable.

[2012-01-30] OSDEA has a new web site design and is now a wiki. Feel free to join and contribute by sending an [mailto:opensourcedea@gmail.com email] to get your login!

[2011-08-14] OSDEA Documentation updated. Latest changes in the code have been documented and the new Javadoc is available at Javadoc Documentation.

[2011-08-08] OSDEA is now Compatible 32 and 64 bits. The 32 and 64 bits lpsolve DLLs are now included in the source (for people checking the source out) and in the downloadable ZIPs. I am also still writing comments to bring the javadoc up to date. This should hopefully be available soon.

[2011-06-29] OSDEA-v0.185 has been released! This version adds many new models (around 40 now including BCC models, DRS, IRS, SBM and appropriate processing of non-controllable/non-discretionary variables). This new version also includes (hopefully) better exception management. For example, it is not now possible to get a solution if one of the optimisation failed to find an optimum (this will throw a not solved properly Exception). Finally, the DEAProblem object itself was changed. Model characteristics are now all stored in a field of the DEAPRoblem object called ModelDetails. All Model variable parameters are also stored in Variable field of the DEAProblem object. A few names were also changed for clarity (e.g. VariableType (previously input, output...) is now VariableOrientation - a new VariableType has been created as well but this refers to non-controllable, non-discretionary variables).

[2011-05-14] Version 0.132 of OSDEA has been released. This version includes more functionalities, simpler installation, more DEA models ( SBM models, Variable RTS) and exceptions.

[2011-04-29] A new version of OSDEA with the SBM model (constant RTS, non-oriented) has been made available on the downloads page.

[2011-04-24] The first compiled library is available! The compile jar v-0.82 has been released and is now available from the downloads page.

[2011-04-02] SOURCE CODE NOW AVAILABLE ON GOOGLE CODE! Check it out on googlecheckout!

[2010-02-01] The Open Source DEA Web site is now live!