<div dir="ltr">Thanks, Stephan! I'd actually gotten as far as using the FLAGS.EQUAL<br>mechanism but ran into problems because I was trying to identify<div>variables across input and output. I guess whatever +copy+ does</div><div>is what I was missing...</div><div><br></div><div>I'll give it a try,</div><div>Emily</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 4, 2015 at 1:27 PM, Stephan Oepen <span dir="ltr"><<a href="mailto:oe@ifi.uio.no" target="_blank">oe@ifi.uio.no</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">i had to look up some examples from the original LOGON Transfer Matrix<br> (in SVN) myself, but it would seem that the FLAGS.EQUAL mechanism is<br> supported for variable properties. thus, something in the following<br> spirit should work (and not cycle):<br> <br> INPUT < [ ARG0 [ MOOD mood & #mood ] ] >,<br> OUTPUT < +copy+ & [ ARG0 [ MOOD realis ] ] >,<br> FLAGS.EQUALS < #mood ><br> <br> if, for some reason, the above refuses to cooperate, i dimly recall<br> introducing ‘decorator’ EPs (e.g. ‘plural_noun_mark’ in the Transfer<br> Matrix) to prevent cyclic rule applications: once the variable<br> property is refined, one can put a mark on that variable, and<br> somewhere towards the end of transfer all marks can be dropped ...<br> <br> good luck putting it all together! oe<br> <div class="HOEnZb"><div class="h5"><br> <br> On Wed, Mar 4, 2015 at 9:43 PM, Emily M. Bender <<a href="mailto:ebender@uw.edu">ebender@uw.edu</a>> wrote:<br> > Dear all,<br> ><br> > I'm reaching the end of this year's Ling 567, and this time around we have<br> > two languages (Bardi [bcj] and Lithuanian [lit]) that contrast realis and<br> > irrealis<br> > mood, where irrealis is required in negated sentences but also possible<br> > elsewhere (with other uses).<br> ><br> > We typically use VPM to set defaults for various variable properties to keep<br> > the range of generator outputs down in our MT set up, but can't in this<br> > case set MOOD to realis by default, since then we don't get any output<br> > for negated sentences.<br> ><br> > It seemed tempting to try to create a family of transfer rules that<br> > specialize<br> > MOOD on the ARG0 of negated _v_rels (i.e. whose LBL is the LARG of a qeq<br> > whose HARG is the ARG1 of neg_rel) to [ MOOD irrealis ] and that of<br> > _v_rels that aren't negated to [ MOOD realis ]. The trouble is, I can't<br> > figure<br> > out a way to write this rule that doesn't feed itself.<br> ><br> > Is there something I'm missing, or (perhaps more likely) is this just not an<br> > intended use case for the transfer rules/otherwise a bad idea in some way?<br> ><br> > Thanks,<br> > Emily<br> ><br> > --<br> > Emily M. Bender<br> > Professor, Department of Linguistics<br> > Check out CLMS on facebook! <a href="http://www.facebook.com/uwclma" target="_blank">http://www.facebook.com/uwclma</a><br> ><br> </div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Emily M. Bender<br>Professor, Department of Linguistics<br>Check out CLMS on facebook! <a href="http://www.facebook.com/uwclma" target="_blank">http://www.facebook.com/uwclma</a><br></div></div> </div>