This keynote illustrates an innovative approach to the conceptual modeling of a web site: instead of considering a site as an (interactive) information container we can interpret it as a device capable of generating a dialogue with the user. Activating the selected options represents the user “turns” of the dialogue; the webs “turns” are represented by the reply to the user selection. Theoretic...

Nowadays, there is an increasing use of sampling methods in network and spatial populations. Although the most common link-tracing designs such as adaptive cluster sampling and snowball sampling have advantages over conventional sampling designs such as simple random sampling and cluster sampling, these designs still present many drawbacks. Adaptive web sampling is a new link-tracing design tha...

An open problem in the construction of an environment for visualizing and navigating information in the context of the Semantic Web is to guarantee a satisfactory compromise between expressivity and domain-independence. In this paper we first introduce M-FIRE, a configurable framework for instantiating visualization and navigation systems based on the adoption of custom metaphors: metaphors dri...

Three studies were conducted to ascertain how quickly people form an opinion about web page visual appeal. In the first study, participants twice rated the visual appeal of web homepages presented for 500 ms each. The second study replicated the first, but participants also rated each web page on seven specific design dimensions. Visual appeal was found to be closely related to most of these. S...

In this paper, we contrast the artifacts that professional and end-user web developers utilize when designing a website’s interface. We then briefly discuss how these differences hold implications in effective tool support for end-user web developers.

To be able to realize the vision of the semantic web an important bottleneck that needs to be solved is an easy and intuitive approach for the annotation of websites with semantic information. Annotating websites defines the containing data in a form which is suitable for interpretation by machines. In this paper, we present a new approach to annotate websites by taking the annotation process t...