Abstract
This paper describes how a multimedia adaptation
framework can automatically decide the sequence of
operations to be executed in order to adapt an MPEG-
21 Digital Item to the MPEG-21 description of the
usage environment in which it will be consumed. The
main innovation of this work with respect to previous
multimedia adaptation decision models is that in the
proposed approach decisions can be made without
knowing the exact behaviour of the operations that are
going to be executed.