he Saxon-EE product includes within a single package:
A schema-aware XSLT 2.0 processor
A schema-aware XQuery 1.0 processor
An XPath processor that can be called from Java applications
A free-standing XML Schema validator.
Saxon is written in 100% Java and therefore runs on any popular platform
A regular expression (regex) is a pattern that can be used to match a string of text. They are a standard feature of many programming languages that are used for text-processing purposes (and they have the inconvenient habit of being implemented ever-so-slightly differently in different languages).
D. Karger, and D. Quan. Web Semantics: Science, Services and Agents on the World Wide Web, Selcted Papers from the International Semantic Web Conference, 2004 - ISWC, 2004, Hiroshima, Japan, 07-11 November 2004, 3 (2-3):
147-157(October 2005)