Content-Aware Power Saving Multimedia Adaptation for Mobile Learning

Abstract

Abstract-Due to the tremendous enhancements in the capabilities of mobile devices in recent years and accessibility to higher bandwidth mobile internet, the use of online multimedia learning resources on mobile devices is increasingly becoming popular. Improvements in battery capacity have not matched the same advancements compared to other features of mobile devices. Limited Battery power is introducing a significant challenge in making better use of online educational multimedia resources. Online Multimedia Resources drains more battery power as a result of higher amount of wireless data transfer and therefore limiting learning opportunities on the move. Many power saving multimedia adaptation techniques have been suggested. Majority of these techniques achieve battery efficiency while reducing multimedia quality. So far, however, to the best of our knowledge no previous effort has considered the factor of learning efficacy in multimedia adaptation process. Existing adaptation techniques are susceptible to information loss as a result of quality of reduction. Such loss affects the learning content efficacy and jeopardizes the learning process. In this paper, we recommend a novel power save educational multimedia adaptation approach that considers the learning aspect of multimedia in the adaptation process. Our technique enables learning for extended duration by battery power saving without putting the learning process at risk. Efficacy of entire learning resources is managed by not allowing any part of the learning multimedia to be delivered in a quality that will negatively affect the learning outcome. We also present a framework that guides the implementation of our approach followed by description of our prototype application that uses educational multimedia metadata implemented in semantic web technologies.

Learner-battery interaction in energy-aware learning multimedia systems

“…The Adaptation Mechanism takes power-saving preferences, accesses metadata and provides feedback about the resulting adapted content. In order to have better feedback a detailed and suitable metadata is required [9]. Metadata can, for example, describe which sections of learning contents are less important and can be skipped for a particular learner and which sections can be delivered in alternative modalities etc.…”

Energy-Aware Adaptation of Educational Multimedia in Mobile Learning

“…We, therefore, emphasize on the need of multimedia adaptation techniques specifically developed for educational multimedia that consider the effect of adaptation on learning outcomes. To the best of our knowledge, our approach mentioned in [11] is the first one to consider the effect of multimedia adaptation on learning experience as opposed to user experience.…”

“…Based on the identified shorting comings in the existing techniques, we presented a Content-Aware Power-Saving Educational Multimedia Adaptation (CAPS-EMA) mechanism [11]. This mechanism promises to provide optimum battery efficiency while keeping the adapted content suitable for learning.…”

“…The techniques developed so far, however, are not suitable for adapting educational multimedia as they do not consider learning factor in the adaptation process. It is only recently that Power Saving techniques have been recommended to be integrated in Mobile Learning environments to enable learning experience [10,11].…”

“…There is need for energy efficient educational multimedia adaptation techniques that keep multimedia suitable for learning. In our earlier work [11], we proposed a Content-aware Power Save Educational Multimedia Adaptation (CAPS-EMA) approach that achieves battery efficiency without risking the learning process.…”