On the Evaluation of Quality of Situation (QoSi) in Situation-Aware Ubiquitous Learning Environment

Situation awareness is an emerging concept in ubiquitous environments, particularly the learning ones. Situation-aware systems aim to infer the user's situation from detected context. Given the fact that detected context information pieces are prone to sensors' quality, recent quality-awarecentred researches are basically interested in the evaluationof the quality of context (QoC). However, so far no attentionhas been paid to improve system awareness of the identifiedu-learning situation quality. In this paper, a new proposal for evaluating quality of situation (QoSi) is detailed. The proposition aims to compute QoSi by combining QoC of context elements used to describe the identified situation. QoC are weighted according to the weights attributed to the context elements on which the identified situation depends once all context elements do not have the same importance to describe the inferred situation. Illustrative example is given to show the applicability of the proposed solution in evaluating QoSi of Cooperative Data Collecting u-learning situation and its usage in learning resource recommendation.