description |
Multimedia documents are of importance in several application areas,
such as education, advertising and entertainment. Since multimedia
documents may comprise continuous media, such as audio and video,
the presentation of those documents may require a significant amount
of processing and network resources. The amount of resources
available during a presentation depends on the system configuration
and the current system load. Hence, it can happen that there are not
enough resources to render a multimedia document according to the
specification resulting in a reduced presentation quality. To cope
with those situations, documents can integrate presentation
alternatives permitting to adapt the document presentation to
different system configurations and load conditions. In this paper,
we present an adaptive scheduling algorithm which allows to adapt
documents conform to our document model Tiempo in environments with
best-effort assignment of resources.
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