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TR: [newsml-g2] subject codes and NewsML-G2

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  • Laurent LE MEUR
    FYI I forward (with her permission) a post from Lena T. about the subject codes shown in one of the samples I uploaded yesterday. Laurent
    Message 1 of 1 , Jul 17 2:07 PM
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      FYI I forward (with her permission) a post from Lena T. about the subject codes shown in one of the samples I uploaded yesterday.

       

      Laurent

       


      De : Laurent LE MEUR
      Envoyé : mardi 17 juillet 2007 17:33
      À : 'Lena Tenenboim'
      Objet : RE: [newsml-g2] Digest Number 175

       

      Dear Lena ,

       

      They are in fact two facets in your question:

      -          One related to the syntax of the current IPTC Subject codes taxonomy,

      -          One related to the generic way of representing the subject of a news item.

       

      It is true that the current IPTC Subject codes taxonomy has been implemented with a coding system that represents the hierarchy inside the coding itself.

      Thus 01026002 is more specific than 01026000 which is more specific than 01000000.

       

      But

      -          This is not a generic rule for the construction of taxonomies (some are based on English tokens, others are a pure list of incremental codes). Therefore, depending the taxonomy, it is possible that you get no information about the ancestors of a term from its code; in such a case, including the chain of terms in a newsItem can be helpful for the recipient. For sure, if the recipient has knowledge of the taxonomy tree, he can infer the hierarchy by itself (this is called auto-posting in English I think).

      -          This will certainly change in the future for the IPTC Subject codes taxonomy itself (there is a newscode-G2 coming). The reason why this will change is not part of the discussion around NewsML-G2: please move to the http://tech.groups.yahoo.com/group/newscodes/ Yahoo! List if you want to discuss this matter.

       

      Maybe I should remove the comment for the example: this is not really a NewsML-G2 issue. I put it to show that including a term and its ancestors was possible.

       

      Can I forward your post to the list, so others can benefit from the answer?

       

      Best regards

      Laurent Le Meur

      AFP


      De : Lena T.
      Envoyé : lundi 16 juillet 2007 14:20
      À : Laurent LE MEUR
      Objet : Re: [newsml-g2] Digest Number 175

       

      Dear Laurent LE MEUR,

       

      I've checked the posted examples of NewsML-G2.

      My question is regarding the IPTC Subject codes taxonomy.

      You've written in the comments that "one should not assume that the hierarchy is derived from the code structure

       

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