Provider: | PUT |
---|---|
Version: | 0.3 |
Robust Ordinal Regression for value-based sorting: RORUTADIS-PostFactum-InvestigatePerformanceDeterioration service checks how much an alternative evaluations can be deteriorated so that that alternative would stay possibly (or necessarily) in at least some specific class. Deterioration is based on minimization value of rho in multiplication of an alternative evaluations on selected criteria by rho (where 0 < rho <= 1). Note! This function works for problems with only non-negative alternative evaluations. It is possible to provide an additional optional preference information: example alternatives assignments, assignment pairwise comparisons and desired class cardinalities. Service developed by Krzysztof Ciomek (Poznan University of Technology, under supervision of Milosz Kadzinski).
(For outputs, see below)
A list of criteria (<criteria> tag) with information about preference direction (<criteriaValues mcdaConcept=”preferenceDirection”>, 0 - gain, 1 - cost) and number of characteristic points (<criteriaValues mcdaConcept=”numberOfCharacteristicPoints”>, 0 for the most general marginal utility function or integer grater or equal to 2) of each criterion.
A list of alternatives.
</alternative>
</alternatives>
A list of categories (classes). List must be sorted from the worst category to the best.
</categories>
The performances of the alternatives.
A list of criteria values which denote whether multiplying by rho on corresponding criterion is allowed (value 1) or not (value 0). Values for all criteria have to be provided and at least one criterion has to be available for manipulation.
</criterionValue> […]
</criteriaValues>
Optional: yes, enabled by default
A list of assignment examples of alternatives to intervals of categories (classes) or to a specific category (class).
</alternativeAssignment> […] <alternativeAssignment>
<alternativeID>[…]</alternativeID> <categoriesInterval>
- <lowerBound>
- <categoryID>[…]</categoryID>
</lowerBound> <upperBound>
<categoryID>[…]</categoryID></upperBound>
</categoriesInterval>
</alternativeAssignment> […] <alternativeAssignment>
<alternativeID>[…]</alternativeID> <categoriesSet>
<categoryID>[…]</categoryID> […]</categoriesSet>
</alternativeAssignment> […]
</alternativesAssignments>
Optional: yes, enabled by default
Two lists of assignment pairwise comparisons. A comparison from list with attribute mcdaConcept=”atLeastAsGoodAs” indicates that some alternative should be assigned to class at least as good as class of some other alternative (k = 0) or at least better by k classes (k > 0). A comparison from list with attribute mcdaConcept=”atMostAsGoodAs” indicates that some alternative should be assigned to class at most better by k classes (k > 0) then some other alternative.
<alternativeID>[…]</alternativeID> <column>
<alternativeID>[…]</alternativeID> <values>
- <value>
- <integer>k</integer>
</value>
</values>
</column>
</row> […]
</alternativesMatrix>
</alternativesMatrix>
Optional: yes, enabled by default
A list of category (class) cardinality constraints. It allows to define minimal and/or maximal desired category (class) cardinalities.
<categoryID>[…]</categoryID> <values>
- <value>
- <interval>
- <lowerBound><integer>[…]</integer></lowerBound> <upperBound><integer>[…]</integer></upperBound>
</interval>
</value>
</values>
</categoryValue> […]
</categoriesValues>
Method parameters.
Parameter values can be defined via the GUI or the XMCDA file, by default via GUI.
Name: strictlyMonotonicValueFunctions
Whether marginal value functions strictly monotonic or not.
Name: alternative
An identifier of alternative for assignment deterioration.
Name: necessary
Whether necessary or possible assignments to consider.
Name: atLeastToClass
An identifier of category of assignment to investigate.
</values>
</parameter> <parameter name=”alternative”>
- <values>
- <value><label>%2</label></value>
</values>
</parameter> <parameter name=”necessary”>
- <values>
- <value><boolean>%3</boolean></value>
</values>
</parameter> <parameter name=”atLeastToClass”>
- <values>
- <value><label>%4</label></value>
</values>
</parameter>
</programParameters>
Deterioration value (value of rho).
<alternativeID>[…]</alternativeID> <values>
- <value>
- <real>[…]</real>
</value>
</values>
</alternativeValue>
</alternativesValues>
Messages generated by the program.
For further technical details on the web service underlying this program, have a look at its documentation here.