This is a collection of modules written for MCDA framework/suite Diviz. They implement following concepts taken from the Electre family of methods:
- concordance ('classic', with interactions between criteria, with reinforced preference)
- discordance (with pre-veto, counter-veto), binary discordance (Electre Is)
- credibility (Electre TRI, Electre IV, with counter-veto)
- finding the kernel of a graph (Electre Is)
- class assignments (Electre TRI, TRI-C, TRI-rC)
- outranking (crisp)
Please note that we refer to certain methods here (e.g. Electre TRI) only as points of reference for their users (i.e. as a hint where these concepts originate from) - they are not meant to suggest the only possible context in which they should operate (although you rather don't want to use Credibility from Electre TRI in Electre IV context).
It is also worth mentioning that most of the modules can accept as input both 'alternatives vs alternatives' and 'alternatives vs profiles' (boundary, central) types of comparisons ('most' i.e. 'where it makes sense').
More detailed descriptions of the modules can be found in their respective description-wsDD.xml files.
All modules from this package are written in Python 2.7.3. Apart from Python itself, there are certain requirements/dependencies that must be met, i.e.: docopt (0.6.1), lxml (3.2.3) and networkx (1.8.1). The easiest (and thus recommended) way to install them is by using virtualenv and pip -let's assume that the contents of this repo has been cloned to electre_diviz directory - after that, we need to create a virtualenv (named env):
$ virtualenv env
$ source env/bin/activate
(env)$ cd electre_diviz
(env)$ pip install -r ./requirements(env)$ in the command prompt means that we have activated our newly created virtualenv - further instructions assume that this step is completed successfully.
Another component that is required is PyXMCDA library, which is included with the modules for user's convenience, hence there's no need to install it separately.
Having installed all the requirements and activated the virtualenv, we can test if everything works as expected, e.g.:
(env)$ cd electre_diviz
(env)$ ./tests_all.shIf we don't get any errors in the output, then it means that everything went fine.
It's also worth mentioning that there's a short help available for every module, which can be displayed by using --help or -h switch, e.g.:
(env)$ ./ElectreIsFindKernel --helpThis software is provided under the MIT License. For details, please refer to the file LICENSE located in the main directory.