[developers] Valid MRS? Bug in ERG?

[Alexandre Rademaker]

Ops! I came to hasty conclusions! LKB FOS parsed the sentence with ERG trunk. Two analysis, two MRS and two EDS with no error!! In the MRSs from LKB, ARG2 of `_communicate_v_to` and `_express_v_to` are both qeq to the label of the `unknown` predicate.

I don’t know what I can conclude now… ACE error? 

> On 25 Sep 2020, at 00:05, Alexandre Rademaker <arademaker at gmail.com> wrote:
> 
> 
> Thank you Emily, I found one mention in https://plato.stanford.edu/entries/situations-semantics/. But in the context of the Lisp code, I am curious why the authors used this in the suffix of the function name… 
> 
> BTW, I reported two issues on pydelphin and ERG repositories:
> 
> https://github.com/delph-in/erg/issues/25
> 
> The trunk version of ERG gave me this MRS.. 
> 
> [ TOP: h0
>  INDEX: e2 [ e SF: prop TENSE: tensed MOOD: indicative PROG: - PERF: - ]
>  RELS: < [ _communicate_v_to<0:11> LBL: h1 ARG0: e4 [ e SF: prop TENSE: tensed MOOD: indicative PROG: - PERF: - ] ARG1: i3 ARG2: h5 ARG3: i6 ]
>          [ _or_c<12:14> LBL: h1 ARG0: e2 ARG1: e4 ARG2: e7 [ e SF: prop TENSE: pres MOOD: indicative PROG: - PERF: - ] ]
>          [ _express_v_to<15:22> LBL: h1 ARG0: e7 ARG1: i3 ARG2: h8 ARG3: i9 ]
>          [ unknown<23:33> LBL: h10 ARG: u12 ARG0: e11 [ e SF: prop TENSE: untensed MOOD: indicative ] ]
>          [ _by_p_means<23:25> LBL: h10 ARG0: e11 ARG1: u13 ARG2: x14 ]
>          [ udef_q<26:33> LBL: h15 ARG0: x14 RSTR: h16 BODY: h17 ]
>          [ nominalization<26:33> LBL: h18 ARG0: x14 ARG1: h19 ]
>          [ _write_v_to<26:33> LBL: h19 ARG0: e20 [ e SF: prop TENSE: untensed MOOD: indicative PROG: + PERF: - ] ARG1: i21 ARG2: i22 ] >
>  HCONS: < h0 qeq h1 h5 qeq h23 h8 qeq h23 h16 qeq h18 > ]
> 
> Handle h23 does not appear in the predicates. The h5 and h8 only in the arguments. Is it valid? 
> 
> Pydelphin transformation to DMRS works with a warning "broken handle constraint”. Can it be transformed to EDS? Is this an evidence that MRS to EDS is much less robust than MRS to DMRS? 
> 
> BTW, since I am having so many trouble with MRS to EDS, and my goal is to compare a golden version of a profile with its 1-best parsed version to evaluate the parse selection model, I wonder if I could be doing that with DMRS instead of EDS… any idea? Any alternative to https://github.com/delph-in/delphin.edm using DMRS?
> 
> Best,
> Alexandre