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This paper presents an ontology-based approach to the interface adaptation for people with special needs on the basis of user model and rule-based reasoning mechanism over ontology. The meta-ontology for adapting interfaces for people with disabilities was developed to integrate and manage the domain ontologies (user domain ontology, user disability domain ontology, application interface domain ontology,...
In Human Computer Interaction, visual representation is related to how information is presented and represented. This study seeks to determine if visual representation features in an interface design are beneficial to certain types of users. We conduct an experiment that evaluates individual differences in 3-dimensional view with interaction (3DI) and 3-dimensional view without interaction (3DL)....
In order to enable users to query documents according their individual preferences, we propose a new user interaction model that forms an extension of the well-known relevance feedback approach. The introduced approach is utilizing partially ordered sets to express quality relations between result documents, i.e. the user's preference, directly on sample documents from the document set. Hence, the...
This current study explored the impact of individual differences in personality factors on interface interaction and learning performance in both an interactive visualization and a menu-driven web application. Participants were administered 6 psychometric measures designed to assess trait anxiety, locus of control, and other personality traits. Participants were then asked to complete 3 procedural...
In this paper we plan to explore the notion of cognitive chance taking advantage of an analysis of the concept of interface. The notion of interface, especially studied in the field of human-computer interaction (HCI), can be of help in shedding light on how to design cognitive artifacts able to shape and extend pre-existing cognitive capabilities - and even able to unearth new ones. The cognitive...
Travel aids for the blind are portable electronic devices that are either cane fitted, hand-held or worn by the visually impaired user, to warn of obstacles ahead. These devices exhibit a number of complex user challenges, the most significant of which are related to the interface display that conveys navigation/obstacle warning information. There is a need for a new approach to the design of computer-based...
Understanding how analysts use visual-analytics (VA) tools can help reveal their reasoning processes when using these tools. By examining analysts' interaction logs, the authors identified the analysts' strategies, methods, and findings when using a financial VA tool.
This research investigates visual information preferences through a questionnaire, performance on reasoning problems and eye movement analysis. A questionnaire was administered to 140 college students. The results showed interesting differences by field, gender, and visual preference. Two extreme groups of respondents, six male and six female, were recruited from a pool of 28 respondents matching...
Knowledge gathering and investigative tasks in open environments can be very complex because the problem-solving context is constantly evolving, and the data may be incomplete, unreliable and/or conflicting. This paper significantly extends our previous work on a mixed-initiative agent by making it capable of assisting humans in foraging task analysis using AI blackboard-based reasoning, visualizations...
While exploring data using information visualization, analysts try to make sense of the data, build cases, and present them to others. However, if the exploration is long or done in multiple sessions, it can be hard for analysts to remember all interesting visualizations and the relationships among them they have seen. Often, they will see the same or similar visualizations, and are unable to recall...
This paper describes a multimodal annotation system called Gym2Learn, and its experimentation with deaf students. The system was developed at our Institute in the framework of the project CORFAD "Centro di competenza per la promozione e il testing di metodologie e prototipi di ambienti per lpsilaOrientamento e la Formazione A Distanza", funded by the Industrial Department through the European...
This study involved an evaluation of our V/Q system by five radiologists using forty-nine clinical data sets. The experts compared the quality of the registration and the color visualization methods. A Web-based user interface was developed to display color-enhanced images and to manipulate those images. The original gray scale image sets were also transformed to a green color table for ventilation...
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