Papers by Dorina Rajanen (Marghescu)
Proceedings of the 11th Nordic Conference on Human-Computer Interaction: Shaping Experiences, Shaping Society
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FabLearn Europe / MakeEd 2021 - An International Conference on Computing, Design and Making in Education
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Proceedings of the FabLearn Europe 2019 conference on ZZZ - FabLearn Europe '19
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Human-Computer Interaction – INTERACT 2017
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Proceedings of the 1st GamiFIN conference, 2017
This paper contrasts the user-centred design with the gamification design framework and proposes ... more This paper contrasts the user-centred design with the gamification design framework and proposes a model of usability benefits adapted to gamification. The model is useful for selling the usability activities to management and strategists when developing gamified solutions, services, and software. In this paper, we focus on identifying the benefits since they can be used to legitimise the usability activities in a development project. The user-centred design process focuses on understanding the user, their needs and requirements, and the paper shows that the benefits of this approach transcends the user dimension and reaches towards the developing organization by providing competitive advantage and reduced developing costs.
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Projection techniques reduce the data dimensionality by combining the original variables into a s... more Projection techniques reduce the data dimensionality by combining the original variables into a smaller number of new dimensions, in a linear or nonlinear manner. The projection methods are particularly useful because they lend themselves to visual representations of data, when the number of new dimensions is one, two or three. In this paper, the aim is to evaluate different visualization techniques based on projection techniques with respect to their effectiveness in preserving the inherent relationships and structure of the dataset. For this purpose, we investigate the use of the Hubert's statistics for evaluating the fit between the distance matrices of original data and projected data. Moreover, we investigate the use of the modified Hubert's statistics for evaluating the effectiveness of projection techniques in preserving the clustering structure inherent in the dataset, if such structure is present.
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2016 49th Hawaii International Conference on System Sciences (HICSS), 2016
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Proceedings of the 19th International Academic Mindtrek Conference on - AcademicMindTrek '15, 2015
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The purpose of this chapter is to provide an overview of prevalent measures for evaluating the qu... more The purpose of this chapter is to provide an overview of prevalent measures for evaluating the quality of system output in seven key text mining task domains. For each task domain, a selection of widely used, well applicable measures is presented, and their strengths and ...
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Information Systems Development, 2008
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Proceedings of the 23rd IASTED International Conference on Databases and Applications 2005, 2005
The Self-Organizing Maps method is a special type of neural network used in clustering, visualiza... more The Self-Organizing Maps method is a special type of neural network used in clustering, visualization and abstraction. In this paper, we evaluate to what extent users of the SOM technique are satisfied with this tool in visualizing large amounts of data. The contribution of the paper consists of identifying the factors that influence the quality of use of SOM tools at the three levels considered for analysis: visualization of data, interaction with the tool, and information obtained.
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Executive Summary The importance of taking media experience into account when creating new media ... more Executive Summary The importance of taking media experience into account when creating new media content, services and technologies is well established. There are several methodological approaches and measurement techniques (eg, interview, self-report, ...
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Papers by Dorina Rajanen (Marghescu)