XCONCUR and XCONCUR-CL
A very brief overview
XCONCUR is an experimental markup language with the major goal to
provide a convenient method to express concurrent hierarchies in an
XML-like fashion. XCONCUR-CL is a validation component in XCONCUR
and allows cross-layer validation.
- Notation
- The XCONCUR Syntax is similar to SGML with the
CONCUR option set to 'YES'.
- Model
- The data model of XCONCUR are multi-rooted
trees. A set of trees span over the same primary data.
- Validation
- Each annotation layer in an XCONCUR document
may be validated against a schema written in one of the common
"XML schema languages" (such as DTD, XML Schema or
RelaxNG). XCONCUR-CL is a constraint language, which allows to
define a set of constraints which are used in a cross-layer
validation process.
An example XCONCUR instance
The following code shows a small XCONCUR instance:
<?xconcur version="1.1" encoding="iso-8859-1"?>
<?xconcur-schema layer="l1" root="div" system="teispok2.dtd"?>
<?xconcur-schema layer="l2" root="text" system="teiana2.dtd"?>
<?xconcur-constraint system="example.xcs" xconcur:l1="L1" xconcur:l2="L2"?>
<(l1)div type="dialog" org="uniform">
<(l2)text>
<(l1)u who="Peter">
<(l2)s>Hey Paul!</(l2)s>
<(l2)s>Would you give me
</(l1)u>
<(l1)u who="Paul">
the hammer?</(l2)s>
</(l1)u>
</(l2)text>
</(l1)div>
References
The following publications provide more information about XCONCUR:
- Oliver Schonefeld (2008). A Simple API for
XCONCUR. In:
Proceedings of the Balisage 2008, Montréal, Canada (html)
- Andreas Witt und Oliver Schonefeld und Georg Rehm und Jonathan Khoo und
Kilian Evang (2007). On the Lossless Transformation
of Single-File, Multi-Layer Annotations into Multi-Rooted Trees. In:
Proceedings of the Extreme Markup 2007, Montréal, Canada (html)
- Oliver Schonefeld (2007). XCONCUR and XCONCUR-CL:
A Constraint-Based Approach for the Validation of Concurrent Markup.
In: Georg Rehm und Andreas Witt und Lothar Lemnitzer (Hrsg.), Data
Structures
for Linguistic Resources and Applications – Proceedings of the
Biennial GLDV Conference 2007. Gunter Narr Verlag, Tübingen, Germany
- Oliver Schonefeld und Andreas Witt (2006). Towards
validation of concurrent markup. In: Proceedings of the Extreme
Markup
2006, Montréal, Canada (html)
- Oliver Schonefeld (2005). Mascarpone und
XML-CONCUR – Ein Editor und
ein Verarbeitungsmodell für multi-strukturierte Daten.
Diplomarbeit, Universität Bielefeld, Bielefeld (pdf,
only in German)
- Mirco Hilbert und Oliver Schonefeld und Andreas Witt (2005). Making CONCUR work. In: Proceedings of the Extreme
Markup
2005, Montréal, Canada (html)