Retrieval Schedules Based on Resource Availibility
and Flexible Presentation Specifications
Retrieval Schedules Based on Resource Availibility
and Flexible Presentation Specifications
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Date
1998-10-15
Authors
Candan, K. Selcuk
Prabhakaran, B.
Subrahmanian, V. S.
Advisor
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Abstract
A distributed multimedia document presentation involves
retrieval of objects from the document server(s) and their
presentation at the client system. The presentation of the multimedia
objects have to be carried out in accordance with the specification
of temporal relationships among the objects. The retrieval of
multimedia objects from the document server(s) is influenced by the
factors such as: temporal specification of objects presentations,
throughput offered by the network service provider, and the buffer
resources on the client system. Flexibility in the temporal
specification of the multimedia document can help in deriving an
object retrieval schedule that can handle variations in the network
throughput and buffer resources availability. In this paper, we
develop techniques for deriving a flexible object retrieval
schedule for a distributed multimedia document presentation. The
schedule is based on flexible temporal specification of the
multimedia document using the difference constraints approach.
We show how the derived retrieval schedule can be validated and modified
to ensure that it can work with the offered network throughput and
the available buffer resources.
(Also cross-referenced as UMIACS-TR-96-21)