miun.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
A Note on Tornado Diagrams in Interval Decision Analysis
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Responsible organisation
2007 (English)In: Proceedings of the World Congress of Engineering 2007, IAENG, 2007Conference paper, (Other scientific)
Abstract [en]

The research efforts of the DECIDE Research Group have resulted in a decision tool capable of handling imprecise information in complex decision situations. Some of the research has been directed towards developing decision analytical algorithms and applying these algorithms in a graphical user interface. The decision tool takes intervals as well as comparative relations as input constraint, and is incorporating sensitivity analyses into the repre¬sentation, instead of applying separate sensitivity analyses on top of the evalua¬tion procedure. However, besides the built-in sensitivity analysis, a second form of sensitivity analysis could be useful in order to point out the most critical probabilities, values, or weights to the decision at hand. This paper deals with the problems and the implementation of interval tornado diagrams in a decision tool supporting interval probabilities, values, criteria weights, as well as com¬para¬tive relations.

Place, publisher, year, edition, pages
2007.
Keyword [en]
decision analysis, decision tree, imprecise information, tornado diagram
National Category
Computer Science
Identifiers
URN: urn:nbn:se:miun:diva-4213Local ID: 4935OAI: oai:DiVA.org:miun-4213DiVA: diva2:29245
Available from: 2008-11-23 Created: 2008-11-23Bibliographically approved
In thesis
1. An applied approach to numerically imprecise decision making
Open this publication in new window or tab >>An applied approach to numerically imprecise decision making
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Despite the fact that unguided decision making might lead to inefficient and nonoptimal decisions, decisions made at organizational levels seldom utilise decisionanalytical tools. Several gaps between the decision-makers and the computer baseddecision tools exist, and a main problem in managerial decision-making involves the lack of information and precise objective data, i.e. uncertainty and imprecision may be inherent in the decision situation. We believe that this problem might be overcome by providing computer based decision tools capable of handling the uncertainty inherent in real-life decision-making. At present, nearly all decision analytic software is only able to handle precise input, and no known software is capable of handling full scale imprecision, i.e. imprecise probabilities, values and weights, in the form of interval and comparative statements. There are, however, some theories which are able to handle some kind of uncertainty, and which deal with computational and implementational issues, but if they are never actually operationalised, they are of little real use for a decision-maker. Therefore, a natural question is how a reasonable decision analytical framework can be built based on prevailing interval methods, thus dealing with the problems of uncertain and imprecise input? Further, will the interval approach actually prove useful? The framework presented herein handles theoretical foundations for, and implementations of, imprecise multi-level trees, multi-criteria, risk analysis, together with several different evaluation options. The framework supports interval probabilities, values, and criteria weights, as well as comparative statements, also allowing for mixing probabilistic and multi-criteria decisions. The framework has also been field tested in a number of studies, proving the usefulness of the interval approach.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2007. 50 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 21
Keyword
decision tree, decision analysis, decision tool, imprecise reasoning, probability
National Category
Computer Science
Identifiers
urn:nbn:se:miun:diva-7147 (URN)978-91-85317-49-3 (ISBN)
Public defence
(English)
Opponent
Supervisors
Available from: 2008-11-29 Created: 2008-11-23 Last updated: 2009-02-13Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Idefeldt, Jim
By organisation
Department of Information Technology and Media
Computer Science

Search outside of DiVA

GoogleGoogle Scholar

Total: 219 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf