Abstract
A quite general view of the digital preservation problem and its associated tasks (e.g. intelligibility checking), is to approach it from a dependency management point of view. In this paper we extend past rule-based approaches for dependency management for modeling also converters and emulators and we demonstrate how this modeling allows performing the desired reasoning and thus enables offering more advanced digital preservation services. The latter include taskperformability checking, identification of missing resources for performing a task, and risk detection. Such services could greatly reduce the human effort required for periodically checking (monitoring) whether a task on a digital object is performable. 1.