Adaptive synchronization framework for navigated hypermedia document presentation

Synchronization anomalies, or so-called out-of-sync problems, may occur in a composite multimedia document presentation especially when a presentation tool receives unexpected events that destroy intermedia relations in the document. This work proposes an adaptive synchronization framework (ASF) to solve this problem by adopting a resynchronization procedure. In contrast to the existing approaches focusing on temporal synchronization only, spatial and content relations for a more general presentation are also considered and incorporated into the proposed synchronization core. The experimental results show that the proposed framework can adapt a document to an unsupervised presentation environment and the performance is satisfactory (85%) under some synchronization-killer operations.