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Forsell, Camilla
Publications (10 of 25) Show all publications
Johansson, J. & Forsell, C. (2016). Evaluation of Parallel Coordinates: Overview, Categorization and Guidelines for Future Research. IEEE Transactions on Visualization and Computer Graphics, 22(1), 579-588
Open this publication in new window or tab >>Evaluation of Parallel Coordinates: Overview, Categorization and Guidelines for Future Research
2016 (English)In: IEEE Transactions on Visualization and Computer Graphics, ISSN 1077-2626, E-ISSN 1941-0506, Vol. 22, no 1, p. 579-588Article in journal (Refereed) Published
Abstract [en]

The parallel coordinates technique is widely used for the analysis of multivariate data. During recent decades significant research efforts have been devoted to exploring the applicability of the technique and to expand upon it. resulting in a variety of extensions. Of these many research activities, a surprisingly small number concerns user-centred evaluations investigating actual use and usability issues for different tasks, data and domains. The result is a clear lack of convincing evidence to support and guide uptake by users as well as future research directions. To address these issues this paper contributes a thorough literature survey of what has been done in the area of user-centred evaluation of parallel coordinates. These evaluations are divided into four categories based on characterization of use, derived from the survey. Based on the data from the survey and the categorization combined with the authors experience of working with parallel coordinates, a set of guidelines for future research directions is proposed.

Place, publisher, year, edition, pages
IEEE COMPUTER SOC, 2016
Keywords
Survey; evaluation; guidelines; parallel coordinates
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-123053 (URN)10.1109/TVCG.2015.2466992 (DOI)000364043400063 ()26529719 (PubMedID)
Note

Funding Agencies|Swedish Research Council [2013-4939]

Available from: 2015-12-04 Created: 2015-12-03 Last updated: 2017-12-01
Ynnerman, A., Rydell, T., Persson, A., Ernvik, A., Forsell, C., Ljung, P. & Lundström, C. (2015). Multi-Touch Table System for Medical Visualization. In: Eurographics 2015: Dirk Bartz Prize. Paper presented at Eurographics 2015. Eurographics - European Association for Computer Graphics
Open this publication in new window or tab >>Multi-Touch Table System for Medical Visualization
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2015 (English)In: Eurographics 2015: Dirk Bartz Prize, Eurographics - European Association for Computer Graphics, 2015Conference paper, Published paper (Other academic)
Abstract [en]

Medical imaging plays a central role in a vast range of healthcare practices. While the usefulness of 3D visualizations is well known, the adoption of such technology has previously been limited in many medical areas. This paper, awarded the Dirk Bartz Prize for Visual Computing in Medicine 2015, describes the development of a medical multi-touch visualization table that successfully has reached its aim to bring 3D visualization to a wider clinical audience. The descriptions summarize the targeted clinical scenarios, the key characteristics of the system, and the user feedback obtained.

Place, publisher, year, edition, pages
Eurographics - European Association for Computer Graphics, 2015
National Category
Other Medical Engineering Human Computer Interaction
Identifiers
urn:nbn:se:liu:diva-130543 (URN)10.2312/egm.20151030 (DOI)
Conference
Eurographics 2015
Available from: 2016-08-15 Created: 2016-08-15 Last updated: 2018-01-10
Forsell, C. & Cooper, M. (2014). An Introduction and Guide to Evaluation of Visualization Techniques Through User Studies. In: Weidong Huang (Ed.), Handbook of human centric visualization: (pp. 285-313). New York: Springer
Open this publication in new window or tab >>An Introduction and Guide to Evaluation of Visualization Techniques Through User Studies
2014 (English)In: Handbook of human centric visualization / [ed] Weidong Huang, New York: Springer, 2014, p. 285-313Chapter in book (Refereed)
Place, publisher, year, edition, pages
New York: Springer, 2014
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:liu:diva-108553 (URN)10.1007/978-1-4614-7485-2_11 (DOI)9781461474845 (ISBN)9781461474852 (ISBN)
Available from: 2014-06-30 Created: 2014-06-30 Last updated: 2018-07-19Bibliographically approved
Johansson, J., Forsell, C. & Cooper, M. (2014). On the usability of three-dimensional display in parallel coordinates: Evaluating the efficiency of identifying two-dimensional relationships. Information Visualization, 13(1), 29-41
Open this publication in new window or tab >>On the usability of three-dimensional display in parallel coordinates: Evaluating the efficiency of identifying two-dimensional relationships
2014 (English)In: Information Visualization, ISSN 1473-8716, E-ISSN 1473-8724, Vol. 13, no 1, p. 29-41Article in journal (Refereed) Published
Abstract [en]

In recent years, several different attempts have been made to extend the well-known technique of parallel coordinates using a three-dimensional display. This article presents an evaluation that investigates the performance of the three-dimensional parallel coordinates technique and compares it with standard, two-dimensional parallel coordinates for analysis of two-dimensional relationships. Three-dimensional parallel coordinates, based on parallel planes instead of parallel axes, have been used for many years within the information visualization community for a variety of applications. Despite its quite common use, no formal evaluation detailing its usefulness for different tasks has been conducted. The evaluation presented in this article is the first step towards determining the usefulness of this type of three-dimensional parallel coordinates. The study compared three-dimensional parallel coordinates, using two different axis configurations commonly seen in the literature, with standard two-dimensional parallel coordinates for identification of two-dimensional relationships between variables in multivariate data. This type of task and the relationships to be judged are known to be well supported by two-dimensional parallel coordinates and multi-relational three-dimensional parallel coordinates. The results show that for identification of two-dimensional relationships, two-dimensional parallel coordinates are superior to the three-dimensional extensions, in terms of both response time and accuracy. Subjective opinions were also in favour of two-dimensional parallel coordinates. This study adds to the much-needed body of work examining the usability of three-dimensional representations in information visualization and for what tasks and data a proposed method is or is not appropriate.

Place, publisher, year, edition, pages
Sage Publications, 2014
Keywords
Information visualization, evaluation, usability, parallel coordinates, 3D parallel coordinates
National Category
Media and Communication Technology
Identifiers
urn:nbn:se:liu:diva-102653 (URN)10.1177/1473871613477091 (DOI)000331375900003 ()
Available from: 2013-12-18 Created: 2013-12-18 Last updated: 2018-01-11Bibliographically approved
Lundberg, J., Johansson, J., Forsell, C. & Josefsson, B. (2014). The Use of Conflict Detection Tools in Air Traffic Management – an Unobtrusive Eye Tracking Field Experiment During Controller Competence Assurance. In: HCI-Aero 2014 - International Conference on Human-Computer Interaction in Aerospace: . Paper presented at HCI-Aero 2014 - International Conference on Human-Computer Interaction in Aerospace. Mountain View, CA, USA
Open this publication in new window or tab >>The Use of Conflict Detection Tools in Air Traffic Management – an Unobtrusive Eye Tracking Field Experiment During Controller Competence Assurance
2014 (English)In: HCI-Aero 2014 - International Conference on Human-Computer Interaction in Aerospace, Mountain View, CA, USA, 2014Conference paper, Published paper (Refereed)
Abstract [en]

This study aims at explaining loss of separation events over the Swedish air space in 2011- 2012, which occurred despite an automated conflict detection tool working as designed. The study suggests that there may be a trade-off between spending visual scan time on own conflict detection versus visual scan time spent on examining potential conflicts presented by the conflict detection automation. The issue is hard to solve, and is unfortunately far from resolved. This area of research requires a substantial applied research effort, if the goal is to both increase safety and capacity of ATM through the use of automation.

Place, publisher, year, edition, pages
Mountain View, CA, USA: , 2014
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:liu:diva-115869 (URN)10.1145/2669592.2669655 (DOI)
Conference
HCI-Aero 2014 - International Conference on Human-Computer Interaction in Aerospace
Available from: 2015-03-20 Created: 2015-03-20 Last updated: 2018-01-11
Lundberg, J., Forsell, C., Johansson, J. & Josefsson, B. (2013). AMPLIFY ATM TEAMWORK WITH AUTOMATION: An Eye Tracking Study of Air Traffic Management Tools on Two Large Displays During Regular ATM Simulator Training. In: : . Paper presented at Sesar Innovation Days.
Open this publication in new window or tab >>AMPLIFY ATM TEAMWORK WITH AUTOMATION: An Eye Tracking Study of Air Traffic Management Tools on Two Large Displays During Regular ATM Simulator Training
2013 (English)Conference paper, Poster (with or without abstract) (Other academic)
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:liu:diva-119142 (URN)
Conference
Sesar Innovation Days
Available from: 2015-06-10 Created: 2015-06-10 Last updated: 2018-01-11Bibliographically approved
Tominski, C., Forsell, C. & Johansson, J. (2012). Interaction Support for Visual Comparison Inspired by Natural Behavior. IEEE Transactions on Visualization and Computer Graphics, 18(12), 2719-2728
Open this publication in new window or tab >>Interaction Support for Visual Comparison Inspired by Natural Behavior
2012 (English)In: IEEE Transactions on Visualization and Computer Graphics, ISSN 1077-2626, E-ISSN 1941-0506, Vol. 18, no 12, p. 2719-2728Article in journal (Refereed) Published
Abstract [en]

Visual comparison is an intrinsic part of interactive data exploration and analysis. The literature provides a large body of existing solutions that help users accomplish comparison tasks. These solutions are mostly of visual nature and custom-made for specific data. We ask the question if a more general support is possible by focusing on the interaction aspect of comparison tasks. As an answer to this question, we propose a novel interaction concept that is inspired by real-world behavior of people comparing information printed on paper. In line with real-world interaction, our approach supports users (1) in interactively specifying pieces of graphical information to be compared, (2) in flexibly arranging these pieces on the screen, and (3) in performing the actual comparison of side-by-side and overlapping arrangements of the graphical information. Complementary visual cues and add-ons further assist users in carrying out comparison tasks. Our concept and the integrated interaction techniques are generally applicable and can be coupled with different visualization techniques. We implemented an interactive prototype and conducted a qualitative user study to assess the concepts usefulness in the context of three different visualization techniques. The obtained feedback indicates that our interaction techniques mimic the natural behavior quite well, can be learned quickly, and are easy to apply to visual comparison tasks.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2012
Keywords
Interaction techniques, visual comparison, visualization, human-computer interaction, natural interaction
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-86625 (URN)10.1109/TVCG.2012.237 (DOI)000310143100077 ()
Available from: 2012-12-20 Created: 2012-12-20 Last updated: 2017-12-06
Forsell, C. & Cooper, M. (2012). Questionnaires for evaluation in information visualization. In: BELIV '12 Proceedings of the 2012 BELIV Workshop: Beyond Time and Errors - Novel Evaluation Methods for Visualization. Paper presented at BELIV '12 Beyond Time and Errors - Novel Evaluation Methods for Visualization , October 14–15, 2012, Seattle, WA, USA. New York: ACM Press
Open this publication in new window or tab >>Questionnaires for evaluation in information visualization
2012 (English)In: BELIV '12 Proceedings of the 2012 BELIV Workshop: Beyond Time and Errors - Novel Evaluation Methods for Visualization, New York: ACM Press, 2012Conference paper, Published paper (Refereed)
Abstract [en]

The position taken in this paper is that the availability of standardized questionnaires specifically developed for measuring users' perception of usability in evaluation studies in information visualization would provide the community with an excellent additional instrument. The need for such an instrument is evident for several important reasons. Pursuing the development, validation and use of questionnaires will add significantly to the evidence base necessary for the community to guide the production of high-quality visualization techniques, facilitate adoption by users, promote successful commercialization and guide future research tasks.

Place, publisher, year, edition, pages
New York: ACM Press, 2012
Keywords
Information visualization, evaluation, subjective usability measurement.
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:liu:diva-108563 (URN)10.1145/2442576.2442592 (DOI)978-1-4503-1791-7 (ISBN)
Conference
BELIV '12 Beyond Time and Errors - Novel Evaluation Methods for Visualization , October 14–15, 2012, Seattle, WA, USA
Available from: 2014-06-30 Created: 2014-06-30 Last updated: 2018-01-11Bibliographically approved
Kocak, U., Palmerius, K., Forsell, C. & Cooper, M. (2012). The Effect of the Stiffness Gradient on the Just Noticeable Difference between Surface Regions. In: Poika Isokoski, Jukka Springare (Ed.), Haptics: Perception, Devices, Mobility, and Communication: International Conference, EuroHaptics 2012, Tampere, Finland, June 13-15, 2012. Proceedings, Part I (pp. 282-292). Springer Berlin/Heidelberg
Open this publication in new window or tab >>The Effect of the Stiffness Gradient on the Just Noticeable Difference between Surface Regions
2012 (English)In: Haptics: Perception, Devices, Mobility, and Communication: International Conference, EuroHaptics 2012, Tampere, Finland, June 13-15, 2012. Proceedings, Part I / [ed] Poika Isokoski, Jukka Springare, Springer Berlin/Heidelberg, 2012, p. 282-292Chapter in book (Refereed)
Abstract [en]

This book and its companion volume, LNCS 7282 and 7283, constitute the refereed proceedings of the 8th International Conference, EuroHaptics 2012, held in Tampere, Finland, in June 2012. The 99 papers (56 full papers, 32 short papers, and 11 demo papers) presented were carefully reviewed and selected from 153 submissions. Part I contains the full papers whereas Part II contains the short papers and the demo papers.

Place, publisher, year, edition, pages
Springer Berlin/Heidelberg, 2012
Series
Lecture Notes in Computer Science, ISSN 0302-9743, E-ISSN 1611-3349 ; 7282
Keywords
Computer science, Multimedia systems, Computer vision, User Interfaces and Human Computer Interaction, Information Systems Applications, Computers and Society, Multimedia Information Systems, Computer Imaging, Vision, Pattern Recognition and Graphics, Computers and Education
National Category
Interaction Technologies
Identifiers
urn:nbn:se:liu:diva-79905 (URN)10.1007/978-3-642-31401-8_26 (DOI)978-3-642-31400-1 (ISBN)978-3-642-31401-8 (ISBN)
Available from: 2012-08-28 Created: 2012-08-15 Last updated: 2018-02-08Bibliographically approved
Vrotsou, K. & Forsell, C. (2011). A Qualitative Study of Similarity Measures in Event-Based Data. In: Michael J. Smith and Gavriel Salvendy (Ed.), Human Interface and the Management of Information. Interacting with Information: Symposium on Human Interface 2011, Held as Part of HCI International 2011, Orlando, FL, USA, July 9-14, 2011, Proceedings, Part I (pp. 170-179). Berlin/Heidelberg: Springer
Open this publication in new window or tab >>A Qualitative Study of Similarity Measures in Event-Based Data
2011 (English)In: Human Interface and the Management of Information. Interacting with Information: Symposium on Human Interface 2011, Held as Part of HCI International 2011, Orlando, FL, USA, July 9-14, 2011, Proceedings, Part I / [ed] Michael J. Smith and Gavriel Salvendy, Berlin/Heidelberg: Springer, 2011, p. 170-179Chapter in book (Refereed)
Abstract [en]

This paper presents an interview-based study of the definition of sequence similarity in different application areas of event-based data. The applicability of nine identified measures across these areas is investigated and discussed. The work helps highlight what are the core characteristics sought when analysing event-based data and performs a first validation of this across disciplines. The results of the study make a solid basis for follow-up evaluations of the practical applicability and usability of the similarity measures.

Place, publisher, year, edition, pages
Berlin/Heidelberg: Springer, 2011
Series
Lecture Notes in Computer Science, ISSN 0302-9743, E-ISSN 1611-3349 ; 6771
Keywords
Computer science, Software engineering, Computer system performance, Database management, Data mining, Information Systems, Management of Computing and Information Systems, Special Purpose and Application-Based Systems, e-Commerce/e-business, Data Mining and Knowledge Discovery, System Performance and Evaluation
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-78868 (URN)10.1007/978-3-642-21793-7_21 (DOI)978-3-642-21792-0 (ISBN)978-3-642-21793-7 (ISBN)
Available from: 2012-06-21 Created: 2012-06-21 Last updated: 2018-01-30Bibliographically approved
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