[Corpora-List] ProbBank purpose role: PNC or PRP?

Nathan Schneider Nathan.Schneider at georgetown.edu
Wed Mar 2 15:48:45 CET 2022


All,

I suggest opening an issue on the PropBank issue tracker: https://github.com/propbank/propbank-release/issues/

Best, Nathan

On Wed, Mar 2, 2022 at 9:40 AM Amir Zeldes <Amir.Zeldes at georgetown.edu> wrote:


> Hi Andy,
>
>
>
> My own impression is that there is no reliable difference between PNC and
> PRP (at least not in OntoNotes, which is the corpus I know best). The
> emphasis of “purpose not cause” (PNC) seems to come from disagreements on
> how to annotate modifiers like “why”, which are often ambiguous between
> cause and purpose, so the label PNC says “not just purpose but also
> definitely not cause”. In OntoNotes 3 “PRP” was introduced next to PNC, but
> looking at examples, I see no real basis for the difference, except maybe
> as an ambiguity class (if you read “PRP” to mean
> ‘purpose-maybe-also-cause’). You can also notice that PNC is defined here
> as follows:
>
>
>
> https://catalog.ldc.upenn.edu/docs/LDC2007T21/propbank/english-propbank.pdf
>
> 3.8 *PNC*: “Purpose clauses are used to show the motivation for some
> action. Clauses beginning with "in order to" are canonical purpose clauses”
>
>
>
> But here:
>
>
>
> http://clear.colorado.edu/compsem/documents/propbank_guidelines.pdf
>
> 1.4.10: *PRP* “Purpose clauses are used to show the motivation for some
> action. Clauses beginning with ‘in order to’ and ‘so that’ are canonical
> purpose clauses.”
>
>
>
> So some versions of the guidelines clearly used the exact same definition
> for the different labels. This has been noticed before, see this post
> (search for PNC, it’s a bit long):
>
>
>
> http://markneumann.xyz/blog/syntax/
>
>
>
> The author of this post suggests collapsing PRP an PNC (and also CAU, but
> that part I think is wrong).
>
>
>
> Hope this is helpful!
>
> Amir
>
> ------------
>
> Dr. Amir Zeldes
>
> Assoc. Prof. of Computational Linguistics
>
> Department of Linguistics
>
> Georgetown University
>
> 1437 37th St. NW
>
> Washington, DC 20057
>
>
>
> https://corpling.uis.georgetown.edu/amir
>
>
>
>
>
>
>
>
>
> *From:* corpora-bounces at uib.no <corpora-bounces at uib.no> *On Behalf Of *Christian
> Chiarcos
> *Sent:* Wednesday, March 2, 2022 5:07 AM
> *To:* alueckin <Luecking at em.uni-frankfurt.de>
> *Cc:* corpora at uib.no
> *Subject:* Re: [Corpora-List] ProbBank purpose role: PNC or PRP?
>
>
>
>
>
>
>
> Am Mi., 2. März 2022 um 11:01 Uhr schrieb Christian Chiarcos <
> christian.chiarcos at gmail.com>:
>
> Hi Andy,
>
>
>
> according to the 2010 guidelines (
> http://clear.colorado.edu/compsem/documents/propbank_guidelines.pdf),
> both are two different tags, see Tab. 5.2. And in the current frameset,
> both continue to be used, e.g., in
> http://verbs.colorado.edu/propbank/framesets-english-aliases/come.html
> (PRP) and
> http://verbs.colorado.edu/propbank/framesets-english-aliases/open.html
> (PNC).
>
>
>
> I guess that should have been
> https://github.com/propbank/propbank-frames/blob/master/frames/come.xml
> and
> https://github.com/propbank/propbank-frames/blob/master/frames/open.xml,
> but these role identifier haven't changed.
>
>
>
> Best,
>
> Christian
>
>
>
> In the reality of annotation, the difference can be hard to make at times,
> so that there will always be an inclination to generalize the one or the
> other.
>
>
>
> Best,
>
> Christian
>
>
>
> Am Mi., 2. März 2022 um 10:21 Uhr schrieb alueckin <
> luecking at em.uni-frankfurt.de>:
>
> Dear list,
>
> a clarification question regarding semantic role labeling according to
> PropBank as used, e.g., in CONLL 2012: there are two labels used for the
> purpose role, ARGM-PNC and ARGM-PRP. Are they used interchangeably?
>
> Some philology:
>
> The guidelines of CONLL 2014/15 mention only ARGM-PNC. The current
> PropBank guidelines (http://propbank.github.io) mention only ARGM-PRP. A
> break occurred in the 2005 CL paper (https://aclanthology.org/J05-1004/)
> where PNC is used in tab.1, p.77 but PRP is used in tab.13, p.99.
>
> Thanks for clarifying clues!
>
> Andy
>
>
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-- Nathan Schneider Assistant Professor of Linguistics and Computer Science, Georgetown University http://nathan.cl -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/html Size: 11505 bytes Desc: not available URL: <https://mailman.uib.no/public/corpora/attachments/20220302/2d8547d3/attachment.txt>



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