Ktisis Collection: Κεφάλαια βιβλίων/Book chapters

Investigating document triage on paper and electronic media

Sun, 29 Oct 2006 22:58:59 GMT

Title: Investigating document triage on paper and electronic media

Authors: Loizides, Fernando; Buchanan, G.

Abstract: Document triage is the critical point in the information seeking process when the user first decides the relevance of a document to their information need. This complex process is not yet well understood, and subsequently we have undertaken a comparison of this task in both electronic and paper media. The results reveal that in each medium human judgement is influenced by different factors, and confirm some unproven hypotheses. How users claim they perform triage, and what they actually do, are often not the same

Hear it is: Enhancing rapid document browsing with sound cues

Wed, 29 Oct 2008 22:58:59 GMT

Title: Hear it is: Enhancing rapid document browsing with sound cues

Authors: Loizides, Fernando; Eslambochilar, P.; Buchanan, G.

Abstract: Document navigation has become increasingly commonplace as the use of electronic documents has grown. Speed-Dependent Automatic Zooming (SDAZ) is one popular method for providing rapid movement within a digital text. However, there is evidence that details of the document are overlooked as the pace of navigation rises. We produced a document reader software where sound is used to complement the visual cues that a user searches for visually. This software was then evaluated in a user study that provides strong supportive evidence that non-visual cues can improve user performance in visual seeking tasks.

Wavelet based estimation of saliency maps in visual attention algorithms

Sat, 29 Oct 2005 22:58:59 GMT

Title: Wavelet based estimation of saliency maps in visual attention algorithms

Authors: Tsapatsoulis, Nicolas; Rapantzikos, Konstantinos

Abstract: This paper deals with the problem of saliency map estimation in computational models of visual attention. In particular, we propose a wavelet based approach for efficient computation of the topographic feature maps. Given that wavelets and multiresolution theory are naturally connected the usage of wavelet decomposition for mimicking the center surround process in humans is an obvious choice. However, our proposal goes further. We utilize the wavelet decomposition for inline computation of the features (such as orientation) that are used to create the topographic feature maps. Topographic feature maps are then combined through a sigmoid function to produce the final saliency map. The computational model we use is based on the Feature Integration Theory of Treisman et al and follows the computational philosophy of this theory proposed by Itti et al. A series of experiments, conducted in a video encoding setup, show that the proposed method compares well against other implementations found in the literature both in terms of visual trials and computational complexity

Web navigation for individuals with dyslexia: an exploratory study

Sun, 29 Oct 2006 22:58:59 GMT

Title: Web navigation for individuals with dyslexia: an exploratory study

Authors: Al-Wabil, Areej; Zaphiris, Panayiotis; Ζαφείρης, Παναγιώτης; Wilson, Stephanie

Abstract: In this paper, we present an exploratory study of the web navigationexperiences of dyslexic users. Findings indicate that dyslexics exhibitdistinctive web navigation behaviour and preferences. We believe that theoutcomes of this study add to our understanding of the particular needs of thisweb user population and have implications for the design of effectivenavigation structures.