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IPTC News Exchange Formats Working Party Autumn 2012
 

IPTC News Exchange Formats Working Party Autumn 2012

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The IPTC's News Exchange Formats including NewsML-G2 and QCodes. Initial proposals to standardize the representation of news in JSON.

The IPTC's News Exchange Formats including NewsML-G2 and QCodes. Initial proposals to standardize the representation of news in JSON.

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    IPTC News Exchange Formats Working Party Autumn 2012 IPTC News Exchange Formats Working Party Autumn 2012 Presentation Transcript

    • News Exchange Formats WP IPTC Autumn Meeting 2012 Moscow Stuart Myles, Associated Press
    • Agenda• Minutes of the previous meeting• Matters arising from the minutes• NewsML-G2 2.13• Annual Public Release of NewsML-G2 2.12• QCodes• News in JSON• Date & place of the next meeting © 2009 IPTC (www.iptc.org) All rights reserved 2
    • Previous NEF WP Meeting• Held: 11th June 2012, New York, USA• Minutes – already circulated in the post-conference package – URN: urn:iptc:workdoc:nef:1204:1 – Doc: NEF1204.1-AGMminutes.pdf – Actions arising from the minutes Action Due date StatusInvestigate a JSON representation of NewsML-G2 as format for API Autumn 2012responsesAdd G2-format receivers to the Whos Using It web pages Autumn 2012  Vote to approve the minutes © 2009 IPTC (www.iptc.org) All rights reserved 3
    • Chairman’s report• Other Actions from previous NEF WP Meetings – Add G2-format receivers to the Whos Using It web pages • Major Agencies to ask their customers if they can be added to the Users list on the website • Status: Still outstanding – to follow up – Marketing • Elaborate on a unifying marketing strategy for the G2-Standards • Status: Still outstanding – to follow up © 2009 IPTC (www.iptc.org) All rights reserved 4
    • NewsML-G2 2.13 Changes• CR00158: Add value format to altId• CR00159: Add colourdepth to News Content Characteristics © 2009 IPTC (www.iptc.org) All rights reserved 5
    • CR00158: Add a value format attribute to altIdAdd @idformat to the altId element to indicate the format of the value of the element http://dev.iptc.org/G2-CR00158-Add-value-format-to-altIdExample altId elements with the new @idformat<altId idformat="valfmt:qcode">p:123</altId><altId idformat="valfmt:uri">http://example.com/ids/123</altId><altId idformat="valfmt:literal">123</altId>Create a new Value Format NewsCodes controlled vocabularyThe recommended scheme alias is "valfmt" – qcode: a QCode as defined by the G2 specifications – uri: a URI as defined by RFC3986 or an IRI as defined by RFC3987 – literal: a literal string http://cv.iptc.org/newscodes/valueformat/ © 2009 IPTC (www.iptc.org) All rights reserved 6
    • CR00159: Add colourdepthAdd @colourdepth to the News Content Characteristics attribute group http://dev.iptc.org/G2-CR00159-Add-colourdepth-to-News-Content-Characteristics<remoteContent residref="tag:example.org,2012:video_example.mpg"rendition="rnd:highRes" contenttype="video/mpeg" format="fmt:mpeg"height="625" duration="334" audiocodec="codec:mpegLayer2"audiobitrate="256000" audiosamplesize="16" audiosamplerate="48000"videocodec="codec:mpeg2mp@ml" videoavgbitrate="6500000"videoframerate="25.0" videoscan="interlaced" videoaspectratio="16:9"videosampling="4:2:0" colourdepth="8" rtr:definition="videoDef:SD">Colourdepth is the "bit depth defining the spread of colour data within each sample".The colourdepth is relevant to still images, graphics and video.See http://en.wikipedia.org/wiki/Color_depth for more background © 2009 IPTC (www.iptc.org) All rights reserved 7
    • NewsML-G2 MOTION – Standards CommitteeMOTION (to the Standards Committee): To approve NewsML-G2 version 2.13 as specified by the documents in20121001-DRAFT-NewsML-G2_2.13.zip as a Developer Release. © 2009 IPTC (www.iptc.org) All rights reserved 8
    • NewsML-G2 2.12 NewsML-G2 2.12 is the current Public Releasehttp://www.iptc.org/site/News_Exchange_Formats/NewsML-G2/ http://www.iptc.org/std/NewsML-G2/2.12/ The 2.12 G2 XSD http://www.iptc.org/std/NewsML-G2/2.12/specification/ The updated G2 Implementation Guide http://www.iptc.org/std/NewsML-G2/2.12/documentation/ © 2010 IPTC (www.iptc.org) All rights reserved 9
    • QCodes• As part of the IPTC mission of creating better and more comprehensive documentation, we have a new set of pages on the "dev" site, dedicated to QCodes• http://dev.iptc.org/QCodes• QCodes (Qualified Codes) are a short format for URIs• They are used extensively within the G2 family• They avoid certain restrictions from QNames• Please review the documentation, so that we can publish it publicly © 2010 IPTC (www.iptc.org) All rights reserved 10
    • News about Jayson? © 2010 IPTC (www.iptc.org) All rights reserved 11
    • News in JSON The IPTC should standardize the representation of news in JSON• JSON = JavaScript Object Notation http://json.org/• Lightweight, easy to parse, data interchange format• "JSON is a better data exchange format. XML is a better document exchange format. Use the right tool for the right job.” http://www.json.org/xml.html © 2010 IPTC (www.iptc.org) All rights reserved 12
    • JSON and XML• JSON is an increasingly popular alternative to / replacement for XML, e.g. for APIs – http://blog.appfog.com/why-json-will-continue-to-push-xml-out-of- the-picture/ – http://blog.programmableweb.com/2011/05/25/1-in-5-apis-say- bye-xml/• XML community starting to embrace JSON – http://www.slideshare.net/JeniT/collisions-chimera-and- consonance-in-web-content – http://www.balisage.net/Proceedings/topics/JSON.html © 2010 IPTC (www.iptc.org) All rights reserved 13
    • What is JSON?Name / value pairs: a fieldname in quotes, a colon, a value in quotes "givenname" : "Stuart" Objects: written inside curly braces, may contain multiple NVPs {"givenname" : "Stuart", "familyname" : "Myles"} Arrays: Written inside square braces, may contain multiple objects {"iptcdelegates": [ { "givenname": "Dave", "familyname": "Compton"}, { "givenname": "Stuart", "familyname": "Myles"}, { "givenname": "Robert", "familyname": "Schmidt-Nia" } ]} © 2010 IPTC (www.iptc.org) All rights reserved 14
    • Mapping between JSON and XML• Some challenges – No direct equivalent to namespaces in JSON – No direct equivalent to attributes in JSON – Best way to handle repeated elements? – Representing text markup (particularly with inline markup) – Different datatypes in JSON and XML• Two basic approaches: – Mechanically translate from XML to JSON – Handcraft representation in JSON• My recommendation is that IPTC hand crafts the JSON – Maximize the “naturalness” of resulting markup – Lets us determine the underlying model (G2, rNews, NITF, ...) © 2010 IPTC (www.iptc.org) All rights reserved 15
    • An Initial G2 JSON Experiment Tried JSON w/ TR G2 item https://gist.github.com/3880441 Also see AP’s JSON API http://developer.ap.org/capi © 2010 IPTC (www.iptc.org) All rights reserved 16
    • JSON Schema, Validation• Support for formal validation of JSON is starting to be developed – JSON schema initiative • http://json-schema.org/ • http://www.jsonschema.net/ – JSON validation • http://jsonlint.com/• IPTC could develop a JSON schema for news © 2010 IPTC (www.iptc.org) All rights reserved 17
    • Proposal The IPTC should standardize the representation of news in JSON• News Exchange Formats group kick off News in JSON – Focus on “sweet spots” for JSON representation • APIs and data interchange more than documents – Form a group • Volunteers, charter, establish working methods... – Establish an agenda, such as • Examine existing JSON work • Poll IPTC membership for interest • Determine the data model which needs to be expressed (G2, rNews, NITF ...) • Create experimental JSON representations and schema• Progress report in Amsterdam © 2010 IPTC (www.iptc.org) All rights reserved 18
    • Any other business? © 2009 IPTC (www.iptc.org) All rights reserved 19
    • Date & Place of the Next Meeting IPTC Spring 11 – 13 March 2013 Amsterdam, Nederland Спасибо и до свидания! © 2009 IPTC (www.iptc.org) All rights reserved 20