Better alignment of topics in openrtb with IAB SDA spec and existing practice

[patmmccann]

The alignment with IAB proposed in the doc had a few flaws, segtax is an enum, user.data.id is not used, user.data.name is. Many parties will be transmitting per these changes imminently, except that classifier version will be omitted. user.data.ext.segclass seems like a fine place for classifier version, but the string 'class' doesn't need to be part of both the key and the value, eg 'segclass': 'class_v1'.

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[sbelov]

Thank you for the suggestion; aligning with Segment Taxonomies certainly sounds a plausible option to ease the adoption! Would you be willing to sending a follow up pull request to also modify the initial proposal?

[patmmccann]

I would be happy to, I put the proposal in the open questions section so as be less controversial. I'd be happy to move it up.

[patmmccann]

@sbelov do the changes in the latest commit reflect you request or did you want me to do a PR on the section at the top as well? Should this merge and changes to the top be a different pr?

[sbelov]

@sbelov do the changes in the latest commit reflect you request or did you want me to do a PR on the section at the top as well? Should this merge and changes to the top be a different pr?

The current commit seems reasonable; just a couple more nits. Once we merge this in, I can also follow up with updating the version at the top of this document (or feel free to, if you'd like).

[patmmccann]

@sbelov thanks very much, I think recent commits addressed your feedback.

[sbelov]

thank you, @patmmccann, for this change!