In E-learning environment, the learner felt #N# a need for the annotation tools to annotate knowledge #N# and information manipulated in digital form. These tools #N# help this learner to eectively achieve his#N#various activities. The existing annotation systems are #N#necessarily based on annotation models to conceptualize its #N#properties in a formal way to be exploited by computer systems. #N#Several models have been proposed in the literature in different #N#contexts. However, these models suffer from an under exploitation#N#of the annotation's semantic. They consider this annotation only #N#as a simple track of reading made by the learner to memorize or #N#share notes. In this article, we try to better exploit the semantic #N#of annotations by proposing a new approach which presents the #N#learner's annotative activity as a potential source of Web#N#service invocation. This approach gives rise to a new annotation #N#system rich en features in its architecture which seeks to provide #N#learner with the relevant Web service to meet his annotation's goal.
['Anis Kalboussi', 'Omar Mazhoud', 'Nizar Omheni', 'A. Hadj Kacem']
An Approach of Assistance of Learner's Annotative Activity through Web Services