Details

Autor(en) / Beteiligte

• Karanam, Saraschandra
• van Oostendorp, Herre
• Indurkhya, Bipin

Titel

Evaluating CoLiDeS + Pic: the role of relevance of pictures in user navigation behaviour

Ist Teil von

• Behaviour & information technology, 2012-01, Vol.31 (1), p.31-40

Ort / Verlag

London: Taylor & Francis

Erscheinungsjahr

2012

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• CoLiDeS + Pic is a cognitive model of web-navigation that incorporates semantic information from pictures intoCoLiDeS. In our earlier research, we have demonstrated that by incorporating semantic information from pictures, CoLiDeS + Pic can predict the hyperlinks on the shortest path more frequently, and also with greater information scent, compared to earlier cognitive models of web-navigation like CoLiDeS that relied only on textualinformation from hyperlinks. In this article, we investigate the following research questions. First, would the increase in information scent have an impact on the actual user navigation behaviour? Second, do users actually follow the navigation path predicted by CoLiDeS + Pic? In other words, would CoLiDeS + Pic predict actual user navigation behaviour more accurately than CoLiDeS? We investigate these questions by varying the relevance of pictures on aweb page and studying the impact of varying relevance on the user navigation patterns. We found that under the highly relevant picture condition, users were more accurate and took less time to finish their tasks. Also, under thehighly relevant picture condition, CoLiDeS + Pic predicts significantly greater number of actual user clicks. There was no significant difference in model predictions between the lowly relevant picture condition and no-picture condition. These results validate the predictions made by CoLiDeS + Pic.