NITF 4.0http://www.nitf.org
Stuart MylesAssociated Press
Rome / 3rd November 2010
NITF
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• News Industry Text Format• “A solution for sharing news”• Developed by News Publishers, for News
Publishers• Defines the content and structure of news articles• Currently, NITF v3.5 in DTD and XSD
http://www.nitf.orghttp://groups.yahoo.com/group/nitf/
Towards NITF 4.0
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• Open up the schema– To give NITF users greater flexibility and control– Align NITF with other standards
• The original NITF 4.0 road map:– XSD documentation <- Progress to report– Namespaces <- Progress to report– RDFization <- Now part of a broader IPTC initiative– G2ization <- No progress
• NITF 4.0 started Spring 2010, target end of 2010
XSD Documentation• Currently, only the NITF 3.5 DTD has documentation• An “experimental” NITF XSD with documentation
mechanically copied over:
http://groups.yahoo.com/group/nitf/files/schema/nitf-3-5.xsd
• Comments requested, none received…
http://groups.yahoo.com/group/nitf/message/772
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NITF + Foreign Namespace e.g. Adding Geo Information
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• Maps are popular ways to display news• It would be handy to be able to use GEORSS to add
latitude and longitude information into an NITF article
• Unfortunately, NITF doesn’t allow “foreign namespaces”
Foreign Namespaces
• A long-standing criticism of NITF is that it is closed to foreign namespacese.g. http://snee.com/xml/xml2005/industryschemas.html#d50e406
• NITF 3.5 added more complete support for foreign namespaces in enriched text – but not yet elsewhere
• We decided to turn NITF 4.0 into a more open schema• An experimental XSD can be found at
http://groups.yahoo.com/group/nitf/files/schema/http://www.iptc.org/std-dev/NITF/4.0/
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Experimenting with Namespaces
I constructed some NITF instance documents to help figure out where to add namespaces
into NITF 4.0
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Testing is Important!
• The NITF 3.5 XSD foreign namespace support didn’t work as expected
• I wanted to be able to add some XHTML but couldn’t at first
• I had to change the processContents style to “lax”
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NITF <head>
• Within the <head> it makes sense to add expansion slots within <docdata> and at the end of <head>
• Everywhere else is already generic (iim, pubdata) or too specific
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NITF <body>• Added namespaces to <body.head>…
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NITF <body>
• … and within <media> …
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NITF <body>
• … and within <block>.
• I experimented with namespaces outside of “containers” in the <body> but triggered XSD errors.
• Also, what would this “mean”?
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After NITF <body>?
• I allowed foreign namespaces after the body
• This would turn NITF into a “envelope” language
• Other languages (ATOM, NewsML-G2) sport this model– Could be useful as a general-purpose expansion– Perhaps as a way to carry additional metadata such as codes
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NITF Attributes• I added foreign namespace
attributes to the commonNITFAttributes group
• Used in many – but far from all -NITF elements
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• Adding foreign namespace attributes to the globalNITFAttributes group would cover the rest of the NITF elements
NITF and IPTC’s G2• G2 is a unified framework for packaging and exchanging
news content• Standard model for news metadata regardless of the
content or media type• However, NITF predates the G2 framework
• With work, NITF can join the G2 family, just like SportsML• The biggest change will be the inline adoption of QCodes
– Colon separated scheme:code syntax for controlled vocabularies
• Proposal: proceed with NITF 4.0 without G2 support, to avoid delay – G2 support is too big to rush
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NITF 4.0• The experimental NITF 4.0 schema and a couple of
example documents were distributed to the NITF Yahoo! email list for comment and are available athttp://www.iptc.org/std-dev/NITF/4.0/
• After the deadline for submitting documents to this meeting, I got a little feedback, asking for additions– What is the formal procedure? Can we vote and make changes?
• NITF v 3.4 started the move to XML Schema in 2007• Adding documentation and opening up to “foreign
namespaces” completes the transition to XML Schema
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NITF
Any other business?
Date and place of next meeting:Spring 2011
Grazie!
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