—The proliferation of multimedia narratives has contributed to what is known as the " crisis of choice " , which demands a much more active participation on the part of the user to consume multimedia content. To address this issue, a strategy is to offer users efficient search mechanisms, sometimes based on ontologies. However, one may argue that such… (More)
The study and modeling of systems have called the attention of several researchers, who are interested in estimating rules to describe data behavior. However, before proceeding with this estimation, it is necessary to understand the intrinsic features embedded in data. When such features are not correctly analyzed, the model accuracy tends to decrease. A… (More)
This volume 2, number 2 gathers a collection of articles related to the access to information and communication systems: a research on a device specific for wheelchair users to control ICT tools; and articles related to the accessibility of educational resources and information and communication technologies by students with auditory disability and motor… (More)
This article describes a study conducted by the authors to evaluate the accessibility and readability of the contents of the Web sites of seven universities in Finland. The accessibility assessment has been carried out to check compliance with accessibility guidelines for Web content established by the World Wide Web Consortium recommendation in WCAG 2.0.… (More)
In this paper we derive the consistency of the penalized likelihood method for the number state of the hidden Markov chain in autoregressive models with Markov regimen. Using a SAEM type algorithm to estimate the models parameters. We test the null hypothesis of hidden Markov Model against an autoregressive process with Markov regime.