hig.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Publications (4 of 4) Show all publications
Milutinovic, G., Ahonen-Jonnarth, U., Seipel, S. & Brandt, S. A. (2019). The impact of interactive visualization on trade-off-based geospatial decision-making. International Journal of Geographical Information Science, 33(10), 2094-2123
Open this publication in new window or tab >>The impact of interactive visualization on trade-off-based geospatial decision-making
2019 (English)In: International Journal of Geographical Information Science, ISSN 1365-8816, E-ISSN 1365-8824, Vol. 33, no 10, p. 2094-2123Article in journal (Refereed) Published
Abstract [en]

In a previous work we developed GISwaps, a novel method for geospatial decision-making based on Even Swaps. In this paper, we present the results of an evaluation of a visualization framework integrated with this method, implemented within a decision support system. This evaluation is based on two different studies. In the quantitative study, 15 student participants used GISwaps with no visual features, and 15 participants used GISwaps with the integrated visual framework, as the tool in a solar farm site location case study. The results of the quantitative evaluation show positive impact of the visualization in terms of increased coherency in trade-offs. The results also show a statistically significant difference in average trade-off values between the groups, with users from the non-visual group setting on average 20% higher trade-off values compared with the users in the visual group. In the qualitative study, we had one expert in GIS, two experts in decision-making and two experts in solar energy as a focus user group. Data in this study were obtained by observations and semi-structured interviews with the participants. The impact of the visualization framework was assessed positively by all participants in the expert group. 

Place, publisher, year, edition, pages
Taylor & Francis, 2019
Keywords
GIS decision-making, GISwaps, interactive visualization, tradeoffs
National Category
Computer and Information Sciences Physical Geography
Identifiers
urn:nbn:se:hig:diva-30515 (URN)10.1080/13658816.2019.1613547 (DOI)000470448200001 ()2-s2.0-85065643312 (Scopus ID)
Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-08-19Bibliographically approved
Milutinovic, G., Ahonen-Jonnarth, U. & Seipel, S. (2018). GISwaps: A New Method for Decision Making in Continuous Choice Models Based on Even Swaps. International Journal of Decision Support System Technology, 10(3), 57-78
Open this publication in new window or tab >>GISwaps: A New Method for Decision Making in Continuous Choice Models Based on Even Swaps
2018 (English)In: International Journal of Decision Support System Technology, ISSN 1941-6296, E-ISSN 1941-630X, Vol. 10, no 3, p. 57-78Article in journal (Refereed) Published
Abstract [en]

This article describes how continuous GIS-MCDM problems are commonly managed by combining some weighting method based on pairwise comparisons of criteria with an aggregation method. The reliability of this approach may be questioned, though. First, assigning weights to criteria, without taking into consideration the actual consequences or values of the alternatives, is in itself controversial. Second, the value functions obtained by this approach are in most cases linear, which is seldom the case in reality. The authors present a new method for GIS-MCDM in continuous choice models based on Even Swaps. The method is intuitive and easy to use, based on value trade-offs, and thus not relying on criteria weighting. Value functions obtained when using the method may be linear or non-linear, and thereby are more sensitive to the characteristics of the decision space. The performed case study showed promising results regarding the reliability of the method in GIS-MCDM context.

Place, publisher, year, edition, pages
IGI Global, 2018
Keywords
Continuous Choice Models, Even Swaps, GIS-MCDM, Trade-Offs, Value Functions
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hig:diva-26576 (URN)10.4018/IJDSST.2018070104 (DOI)000455413900004 ()2-s2.0-85047766922 (Scopus ID)
Available from: 2018-05-16 Created: 2018-05-16 Last updated: 2019-03-19Bibliographically approved
Milutinovic, G. & Seipel, S. (2018). Visual GISwaps - an interactive visualization framework for geospatial decision making. In: Alexandru Telea, Andreas Kerren and Jose Braz (Ed.), Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, VISIGRAPP 2018, Funchal, Madeira - Portugal, January 27-29, 2018: . Paper presented at International Conference on Information Visualization Theory and Applications (IVAPP '18), January 27-29, 2018, Funchal, Madeira - Portugal (pp. 236-243). SciTePress
Open this publication in new window or tab >>Visual GISwaps - an interactive visualization framework for geospatial decision making
2018 (English)In: Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, VISIGRAPP 2018, Funchal, Madeira - Portugal, January 27-29, 2018 / [ed] Alexandru Telea, Andreas Kerren and Jose Braz, SciTePress, 2018, p. 236-243Conference paper, Published paper (Refereed)
Abstract [en]

Different visualization techniques are frequently used in geospatial information systems (GIS) to support geospatial decision making. However, visualization in GIS context is usually limited to the initial phase of the decision-making process, i.e. situation analysis and problem recognition. This is partly due to the choice of methods used in GIS multi-criteria decision-making (GIS-MCDM) that usually deploy some non-interactive approach, leaving the decision maker little or no control over the calculation of overall values for the considered alternatives; the role of visualization is thus reduced to presenting the final results of the computations. The contributions of this paper are twofold. First, we introduce GISwaps, a novel, intuitive interactive method for decision making in geospatial context. The second and main contribution is an interactive visualization of the choice phase of the decision making process. The visualization allows the decision maker to explore the consequences of trade-offs and costs accepted during the iterative decision process, both in terms of the abstract relation between different decision variables and in spatial context.

Place, publisher, year, edition, pages
SciTePress, 2018
National Category
Other Engineering and Technologies
Identifiers
urn:nbn:se:hig:diva-26580 (URN)10.5220/0006610202360243 (DOI)2-s2.0-85047934093 (Scopus ID)
Conference
International Conference on Information Visualization Theory and Applications (IVAPP '18), January 27-29, 2018, Funchal, Madeira - Portugal
Available from: 2018-05-16 Created: 2018-05-16 Last updated: 2018-06-25Bibliographically approved
Seipel, S., Milutinovic, G. & Andrée, M. (2016). 3D game technology in property formation. In: 16th International Multidisciplinary Scientific GeoConference SGEM 2016: SGEM2016 Conference Proceedings : Book 2. Paper presented at 16th International Multidisciplinary Scientific GeoConference SGEM 2016, June 28 - July 6, 2016, Albena Resort, Bulgaria (pp. 539-546).
Open this publication in new window or tab >>3D game technology in property formation
2016 (English)In: 16th International Multidisciplinary Scientific GeoConference SGEM 2016: SGEM2016 Conference Proceedings : Book 2, 2016, p. 539-546Conference paper, Published paper (Refereed)
Abstract [en]

The process of real property formation involves the analysis and assessment of legal documents and cadastral information available in digital form. Quite frequently, however, it is necessary to visit the sites to establish relevant information from the real land parcels as well as communicating with involved stakeholders in the natural environment, entailing substantial cost in terms of time and travel expenses. The objective of the work presented here is to investigate alternative, IT-based processes for property formation which draw on existing data and have the potential to substitute time- and cost-intensive field visits. More specifically, the presented study explores how 3D game-based technology can be used to facilitate virtual site visits as an alternative to physical field surveys. We approach this problem by suggesting a framework that enables interoperability of existing 3D terrain models from the national land survey as well as vector data from cadastral databases with existing gaming environments for interactive exploration. Following an analysis of the quality of the existing digital terrain data, we describe an alternative data-extraction pathway that is suitable for rendering of 3D terrain models in the game engine. We present some visual results of our 3D demo system which indicate that salient structures in the terrain relevant for assessment and establishing of property boundaries are readily accessible in the virtual environment. Results of a quantitative comparison of the tested data models also support what visual inspection suggests, that existing terrain data can be refined for use of virtual site visits for property formation.

Series
SGEM2016 Conference Proceedings, ISSN 1314-2704
Keywords
3D visualization, LiDAR, game engine, cadaster, property formation
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:hig:diva-22784 (URN)10.5593/SGEM2016/B21/S08.068 (DOI)000395499400068 ()978-619-7105-58-2 (ISBN)
Conference
16th International Multidisciplinary Scientific GeoConference SGEM 2016, June 28 - July 6, 2016, Albena Resort, Bulgaria
Available from: 2016-11-18 Created: 2016-11-18 Last updated: 2019-01-08Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-1452-2208

Search in DiVA

Show all publications