amrisi / amr-guidelines

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:poss in consensus #16

Closed nschneid closed 10 years ago

nschneid commented 11 years ago
uhermjakob commented 11 years ago

:poss is indeed a little tricky at times. Let me share a little of the original motivation.

As the AMR help page at http://www.isi.edu/~ulf/amr/lib/popup/poss.html describes it, the role :poss ("possessed by") is a very general form of possession. Often used with possessive pronouns, as well as of and 's .

We sometimes use :poss for pertainymns as well, when they are equivalent to semantically equivalent expressions using possessives/'s/of, e.g.

I agree that consistency remains a bit of a challenge. For expressions of the type "at the end of the year," different annotators have been using different annotations:

Our consensus was to use :part/:part-of only for physical parts of a physical objects. See http://www.isi.edu/~ulf/amr/lib/popup/poss.html I would also hesitate to use end-01, as I don't really see a primary ending event here, and this solution wouldn't work too well with similar expressions such as "middle of the year".

nschneid commented 11 years ago

I understand that :poss originally had a very broad scope, but since then we have created roles for expressing more semantic entity-entity relations, such as :part-of, :consist-of, and :employed-by. My suggestions above assume that :poss is most appropriate for semantic possession/ownership, and is no longer appropriate for most other uses of the 's-genitive, of-genitive, or (for that matter) noun-noun compound constructions.

naval officials = officials of the navy = the navy's officials

True, but isn't this also paraphrasable as navy officials (which would suggest :mod, if not :employed-by)?

Russian president = president of Russia

I realize that the "official role in an institution" relation is not well captured by any of the more semanticky options at our disposal, which is why we fall back to :poss. Ideally we would have a frame for president. But I wasn't proposing to change these.

Our consensus was to use :part/:part-of only for physical parts of a physical objects.

The guidelines have unit of the company with :part. I don't see a need to limit it to physical parts, though we would need a variety of examples to ensure consistency.

For expressions of the type "at the end of the year," different annotators have been using different annotations

Another possibility would be end :subevent-of year, which suggests a temporal subdivision rather than a physical one.

nschneid commented 11 years ago

I should add that the original post lists all the instances of :poss I could find in the consensus that I thought had a better alternative. So changing them should not require extensive digging for similar cases.

uhermjakob commented 11 years ago

OK, I can see that in a few cases, :poss seems a bit weird. I'm personally fine with :mod for academic/fiscal year and possibly with :part-of for area of the factory. For expressions such as mid-1950s, would middle be a :subevent-of the decade?

mgeorgescu commented 11 years ago

The suggestions for change given for the examples found in the consensus seem reasonable.

uhermjakob commented 11 years ago

OK. Consensus to change the :poss under academic year and fiscal year to :mod. Updated.

nschneid commented 10 years ago

Closing this in favor of #110.