<div dir="ltr"><div>Ann:</div><div> Does the LKB do anything special regarding properties like --PSV when reading/writing DMRX? They aren't ill-formed in the SimpleMRS format, so I'm wondering if PyDelphin should attempt to do anything special for these.</div><div><br></div><div>Megha:</div><div> I just thought of another alternative. You can serialize to the DMRS-JSON format instead of DMRX. JSON doesn't have the same attribute name constraints as XML. The process is slightly different. Here is MRS->DMRS-JSON conversion:</div><div><br></div><div> import json</div><div> from delphin.mrs import simplemrs</div><div> from delphin.mrs.xmrs import Dmrs</div><div><div> print(</div><div> json.dumps(</div><div> Dmrs.from_xmrs(simplemrs.load_one(source)).to_dict()</div><div> )</div><div> )</div></div><div><br></div><div>(the Dmrs.from_xmrs(...) bit is just for Python2 compatibility. In Python3, you can just do: Dmrs.to_dict(simplemrs.loads_one(source)))</div><div><br></div><div>DMRS-JSON -> MRS conversion is similar:</div><div><br></div><div> ...</div><div><div> print(</div><div> simplemrs.dumps_one(</div><div> Dmrs.from_dict(json.load(source))</div><div> )</div><div> ) </div></div><div><br></div><div>These methods require PyDelphin v0.6.0 (the latest release).</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Feb 21, 2017 at 11:35 AM, Michael Wayne Goodman <span dir="ltr"><<a href="mailto:goodmami@uw.edu" target="_blank">goodmami@uw.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Megha,<div><br></div><div>(I've re-CC'd the developers list so they can benefit or contribute; please include them in follow-up replies)<br><div><br></div><div>Thanks for clarifying.</div></div><div><br></div><div>When you do MRS -> DMRS conversion in your script, it is essentially this:</div><div><br></div><div> print(dmrx.dumps(simplemrs.<wbr>load(source)))</div><div><br></div><div>This loads the simplemrs-encoded source (e.g. a file or sys.stdin; or use simplemrs.loads() for a string argument) into the internal *MRS representation, then the dmrx codec serializes the internal representation to DMRX. Doing DMRS -> MRS conversion is the same, but reversed:</div><div><br></div><div> print(simplemrs.dumps(dmrx.<wbr>load(source)))</div><div><br></div><div>(More technically, the dmrx and simplemrs codecs decode the text streams/strings and instantiate the Dmrs() and Mrs() classes, respectively, in the delphin.mrs.xmrs module. It is these classes (and not the codecs themselves) that do the actual conversion into the internal format.)</div><div><br></div><div>However, there is a problem with the GG grammar and DMRS. The variable properties prefixed by "--" (e.g. "--PSV") cause errors when loading a DMRS. This is because the hyphen is not a valid initial character in an XML attribute name (<a href="https://www.w3.org/TR/REC-xml/#NT-NameStartChar" target="_blank">https://www.w3.org/TR/REC-<wbr>xml/#NT-NameStartChar</a>). It is Python's XML parser, and not PyDelphin, that is failing to load the DMRX instance. I suggest doing one of the following:</div><div><br></div><div> 1. Change the attribute names in the GG grammar</div><div><br></div><div> 2. In your conversion script, find and replace these attributes on the MRS before converting to DMRS, and change them back in DMRS->MRS conversion. You may use underscores (e.g. "__PSV") as the initial character, according to the XML spec.</div><div><br></div><div>Does this help?</div></div><div class="gmail_extra"><div><div class="h5"><br><div class="gmail_quote">On Tue, Feb 21, 2017 at 1:13 AM, megha jain <span dir="ltr"><<a href="mailto:jain11megha@gmail.com" target="_blank">jain11megha@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div><div><div>Hello Michael.<br><br></div>I know usage of Pydelphin so able to implement via this.<br><br></div>I want to know which python code is being used by you to convert German DMRS into German MRS again?<br><br></div>So that this MRS can be given ACE to generate corresponding German sentence.<br><br></div>I am able to process : German sentence => MRS<br></div> <wbr> MRS => DMRS<br></div> <wbr> DMRS => MRS (that is my concern)<br><br></div><div>EXAMPLE :-(A.) INPUT : Abrams bellte sehr leise.</div><div><br>(B.) When I gave above one sentence to ACE , It generated following MRS :-<br>(command used : ./ace -g ggp.dat -1Tf input_file.txt)<br><br></div><div>Following file is attached below.<br></div><div><br></div><div>(C) I gave this MRS as an input to mrs_to_dmrs-pp.py pyhon code and corresponding DMRS generated.<br></div><div>Following file is attached below.<br><br></div><div>(D.) After this I want to convert corresponding DMRS into MRS . Which python code comes in use for this approach?<br></div><div><br><br></div>Hopefully I am able to make you understand what is my concern.<br><br></div>Thank You.<br><div><div><div><div><div><div><div><br></div></div></div></div></div></div></div></div> </blockquote></div><br><br clear="all"><div><br></div></div></div><span class="HOEnZb"><font color="#888888">-- <br><div class="m_-4721760205035595285gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Michael Wayne Goodman<div>Ph.D. Candidate, UW Linguistics</div></div></div> </font></span></div> </blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Michael Wayne Goodman<div>Ph.D. Candidate, UW Linguistics</div></div></div> </div>