[developers] STRINGPRED in MRS

[Michael Wayne Goodman]

Hi Tuan Anh,

The thinking of subtypes of predicates has changed over the years, and as a
result there's numerous overlapping terms for various things. I believe
that the current consensus (documented on
http://moin.delph-in.net/PredicateRfc) is that there are two main axes of
subcategorization for predicate symbols: abstract vs surface and string vs
type (with "real" predicates being a decomposed form of surface preds). But
I suspect what you mean by STRINGPRED is not the same thing as described on
the wiki?

I'm afraid PyDelphin is a bit behind the times WRT these definitions of
predicates, and instead follows mostly what was described in the MRS DTD
(as I understood it at the time). Therefore currently PyDelphin calls
predicates beginning with an underscore a "stringpred", regardless of
whether the symbol was quoted or not. I.e., it should be called
"surfacepred" or something. Abstract predicates are called "grammarpred" in
PyDelphin. I have created a ticket for this bug:
https://github.com/delph-in/pydelphin/issues/117.

Now back to your question, "named_rel" is called a GRAMMARPRED in PyDelphin
because the predicate does not start with an underscore.

On Wed, Jul 26, 2017 at 8:25 AM, Tuấn Anh Lê <tuananh.ke at gmail.com> wrote:

> Hi delphinians,
>
> I'm working on predicate mapping and found that named_rel are not
> STRINGPRED when processed by pyDelphin.Are these expected behaviours? Can
> someone please shed some light for me on this matter :D Thank you.
>
> REALPRED 1
> STRINGPRED 2
> <ElementaryPredication object (pron_rel (x24)) at 140241381023560> 0
> <ElementaryPredication object (pronoun_q_rel (x24)) at 140241380610120> 0
> <ElementaryPredication object (_have_v_1_rel (e25)) at 140241380610240> 1
> <ElementaryPredication object (_the_q_rel (x26)) at 140241380610360> 1
> <ElementaryPredication object (_pleasure_n_of_rel (x26)) at
> 140241380610480> 1
> <ElementaryPredication object (udef_q_rel (x27)) at 140241380610600> 0
> <ElementaryPredication object (nominalization_rel (x27)) at
> 140241380610720> 0
> <ElementaryPredication object (_make_v_1_rel (e28)) at 140241380610840> 1
> <ElementaryPredication object (_the_q_rel (x29)) at 140241380610960> 1
> <ElementaryPredication object (_doctor_n_1_rel (x29)) at 140241380611080> 1
> <ElementaryPredication object (def_explicit_q_rel (x31)) at
> 140241380611200> 0
> <ElementaryPredication object (poss_rel (e30)) at 140241380611320> 0
> <ElementaryPredication object (_acquaintance_n_1_rel (x31)) at
> 140241380611440> 1
> <ElementaryPredication object (_say_v_to_rel (e32)) at 140241380611560> 1
> <ElementaryPredication object (proper_q_rel (x33)) at 140241380611680> 0
> *<ElementaryPredication object (named_rel (x33)) at 140241380611800> 0*
> <ElementaryPredication object (_and_c_rel (e34)) at 140241380611920> 1
> <ElementaryPredication object (_in_p_rel (e35)) at 140241380612040> 1
> <ElementaryPredication object (udef_q_rel (x37)) at 140241380612160> 0
> <ElementaryPredication object (_a+few_a_1_rel (e36)) at 140241380612280> 1
> <ElementaryPredication object (_word_n_of_rel (x37)) at 140241380612400> 1
> <ElementaryPredication object (pron_rel (x38)) at 140241380612520> 0
> <ElementaryPredication object (pronoun_q_rel (x38)) at 140241380612640> 0
> <ElementaryPredication object (_sketch_v_1_rel (e39)) at 140241380612760> 1
> <ElementaryPredication object (_out_p_rel (e40)) at 140241380612880> 1
> <ElementaryPredication object (free_relative_q_rel (x41)) at
> 140241380613000> 0
> <ElementaryPredication object (thing_rel (x41)) at 140241380613120> 0
> <ElementaryPredication object (_occur_v_to_rel (e42)) at 140241380613240> 1
>
>
> Yours,
> --
> Tuan Anh Le
>



-- 
Michael Wayne Goodman
Ph.D. Candidate, UW Linguistics
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