About: Rank reversals in decision-making

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In decision-making, a rank reversal is a change in the rank ordering of the preferability of alternative possible decisions when, for example, the method of choosing changes or the set of other available alternatives changes. The issue of rank reversals lies at the heart of many debates in decision-making and multi-criteria decision-making, in particular. Thus the following question emerges: How can one evaluate decision-making methods? This is a very difficult issue and may not be answered in a globally accepted manner.

Attributes	Values
rdf:type	organisation
rdfs:label	Rank reversals in decision-making (en)
rdfs:comment	In decision-making, a rank reversal is a change in the rank ordering of the preferability of alternative possible decisions when, for example, the method of choosing changes or the set of other available alternatives changes. The issue of rank reversals lies at the heart of many debates in decision-making and multi-criteria decision-making, in particular. Thus the following question emerges: How can one evaluate decision-making methods? This is a very difficult issue and may not be answered in a globally accepted manner. (en)
dcterms:subject	Decision-making
Wikipage page ID	28299520 (xsd:integer)
Wikipage revision ID	1124957018 (xsd:integer)
Link from a Wikipage to another Wikipage	Decision making Decision-making Analytic hierarchy process TOPSIS Amos Tversky ELECTRE Decision-making Weighted sum model Weighted product model PROMETHEE Thomas Saaty Decision making paradox Multi-criteria decision-making Multi-criteria decision making
sameAs	Rank reversals in decision-making Rank reversals in decision-making Rank reversals in decision-making
dbp:wikiPageUsesTemplate	dbt:Dubious dbt:For dbt:Reflist
date	June 2015 (en)
reason	by common definition of rational, this is not rational, even though it happens empirically (en)
has abstract	In decision-making, a rank reversal is a change in the rank ordering of the preferability of alternative possible decisions when, for example, the method of choosing changes or the set of other available alternatives changes. The issue of rank reversals lies at the heart of many debates in decision-making and multi-criteria decision-making, in particular. Unlike most other computational procedures, it is hard to tell if a particular decision-making method has derived the correct answer or not. Such methods analyze a set of alternatives described in terms of some criteria. They determine which alternative is the best one, or they provide relative weights of how the alternatives perform, or just how the alternatives should be ranked when all the criteria are considered simultaneously. This is exactly where the challenge with decision making exists. Often it is hard, if not practically impossible, to determine whether a correct answer has been reached or not. With other computational methods, for instance with a job scheduling method, one can examine a set of different answers and then categorize the answers according to some metric of performance (for instance, a project's completion time). But this may not be possible to do with the answers derived by most decision making methods. After all, determining the best decision making method leads to a decision making paradox. Thus the following question emerges: How can one evaluate decision-making methods? This is a very difficult issue and may not be answered in a globally accepted manner. A critical part in answering this fundamental question is played by what is known as rank reversals. (en)
gold:hypernym	Change
prov:wasDerivedFrom	wikipedia-en:Rank_reversals_in_decision-making?oldid=1124957018&ns=0
page length (characters) of wiki page	16459 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Rank_reversals_in_decision-making
is Link from a Wikipage to another Wikipage of	VIKOR method Decision-making paradox Analytic hierarchy process Superiority and inferiority ranking method Multiple-criteria decision analysis Rank reversals in decision making
is Wikipage redirect of	Rank reversals in decision making
is foaf:primaryTopic of	wikipedia-en:Rank_reversals_in_decision-making

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