Domain-Specific XML Compression

Abstract

Our compression technique is an abstraction of Packed Encoding Rules and has been implemented by the Packed objects structured data compression tool. Rather than trying to support a complex standard we instead describe a very simple technique which allows us to implement a very light-weight encoder capable of compressing structured data represented in XML. We call this work Integer Encoding Rules (IER). The technique is based on a simple mapping of data values belonging to a set of data types to a series of integer values. The data values come from XML data and the data types come from XML Schema.