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Applying markup to complexity

By Simon St. Laurent
August 9, 2012

When XML exploded onto the scene, it ignited visions of magical communications, simplified document storage, and a whole new wave of application capabilities. Reality has proved calmer, with competition from JSON and other formats tackling a wide variety of problems, …

Big data is our generation’s civil rights issue, and we don’t know it

By Alistair Croll
August 1, 2012

Data doesn’t invade people’s lives. Lack of control over how it’s used does. What’s really driving so-called big data isn’t the volume of information. It turns out big data doesn’t have to be all that big. Rather, it’s about a …

IBM patents SGML tag implication? - A conga-line of bottom feeders...

By Rick Jelliffe
January 26, 2010

IBM's patent provides a way annotating a schema so that the text fragments found in element content can implied by the software to belong to an element and therefore to have some simple type. Sound familiar? ISO SGML (IS8879:1986) provides a feature called tag omission. This is a way of annotating a schema so that text fragments in element content can be implied by the software to belong to an element and therefore to have some element type.

Now I have seen everything! - Context-free XML

By Rick Jelliffe
September 30, 2009

I have always thought the context-senstive { a^n, b^n, c^n: n >=1} s was a kind of theoretical construct that you would never see in a real-life XML document. Today, I have actually seen one!

Converting XML Schemas to Schematron (#16): XML Schema Test Suite results for beta 0.5 - The suite smell of success?

By Rick Jelliffe
August 6, 2009

Paul Hermans has kindly set up a process (I believe an XProc pipeline using Calabash and SAXON 9) to test the XML Schema to Schematron converter I have been documenting in this blog over the last few years. Here are some results.

Conformance in the floating world

By Rick Jelliffe
May 26, 2009

This article looks at some trends and challenges for document validation. The challenges come in two classes: first, raw capabilities for lifecycle support for standards; second, coping with transitions from technologies defined by implementation to technologies defined by standards with the necessary agility.


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