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The Computer Journal 1999 42(6):534-546; doi:10.1093/comjnl/42.6.534
© 1999 by British Computer Society
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Web Page Filtering and Re-Authoring for Mobile Users

Timothy BickmoreA1,A2, Andreas GirgensohnA1 and Joseph W. SullivanA1

A1 FX Palo Alto Laboratory, 3400 Hillview Avenue, Building 4, Palo Alto, CA 94304, USA Email: andreasg@pal.xerox.com A2 Present address: MIT Media Laboratory, Massachusetts Institute of Technology, MA, USA

The Digestor system automatically converts web-based documents designed for desktop viewing into formats appropriate for handheld devices with small display screens, such as Palm-PCs, PDAs, and cellular phones. Digestor employs a heuristic planning algorithm and a set of structural page transformations to produce the ‘best’ looking document for a given display size. Digestor can also be instructed, via a scripting language, to render portions of documents, thereby avoiding navigation through many screens of information. Two versions of Digestor have been deployed, one that re-authors HTML into HTML for conventional browsers and one that converts HTML into HDML for Phone.com's micro-browsers. Digestor provides a crucial technology for rapidly accessing, scanning and processing information from arbitrary web-based documents from any location reachable by wired or unwired communication.

Received 18 August, 1998. Revised 21 April, 1999.


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