Environmentally-adaptive XML transformation and its application to content delivery

Abstract

Environmentally-adaptive XML transformation is a key goal for content adaptation. It needs a standard and computationally efficient framework for transformation engine than can transform input XML data depending on environment descriptions (e.g., terminal capabilities) and rule descriptions (e.g., access policies). We propose a method to realize the framework. We adopt XSLT and DOM processors: the DOM processors use environment descriptions and rule descriptions in composing XSLT instances; the XSLT processors refer to the XSLT instances in transforming the input XML data. We cache the XSLT instances for reuse. Since one XSLT instance is produced for each environment description, their number is manageable; XSLT instances are not necessarily created for every input. Caching the XSLT instances and reducing the number of XSLT instances created yields a significant computational advantage in large-scale multimedia content delivery. We will use the proposed framework to create an AAA (Authentication, Authorization, and Accounting) system for multimedia content delivery and network control.

Device-independent web browsing based on CC/PP and annotation

“…Ma et al represent a user's context information using CC/PP and transform layouts and media according to the CC/PP profile. Kinno et al (2003) suggest a framework that transforms XML documents for mobile devices according to access rules. The access rules are represented by XACML (Godik and Moses, 2003) of the Organization for the Advancement of Structured Information Standards (OASIS).…”