Dear Mireia, Hèctor, Kevin, and Fran:
Thanks a million for taking the time to write your explanations. I will
read them and digest them and maybe I might come back with a couple of
questions.
All the best,
Mikel
El 14/11/13 17:15, Mireia Ginestí Rosell ha escrit:
Hello,
My contribution to Apertium is a bit far away now, but from what I can
remember, I did the rules for the en-ca pair with the idea that Fran
exposed in his email. It was a three level transfer, and in general:
-t1x for intra-phrase operations and chunk building: agreement in noun
phrases (like adj-noun, coordinated nouns); in verb groups (aux-verb),
also including treatment of enclitics and verbs, as it affects
contiguous words and, due to the LRLM principle, liberates the verbs
for other long-distance treatments in t2x (e.g.: take it out); and
some local changes for pronouns.
-t2x for inter-phrase operations: long distance agreements
(subj-verb), taking into account patterns with prepositional phrases
(like SN + SP + Verb); relative clauses and other subordinate clauses
-t3x: insertion or correction of particular words depending on the
output of t2x (e.g. insertion of articles, change of an article from
definite to indefinite (for basque), make a pronoun a reflexive pronoun
For Basque-Spanish I had the same principles, although there may be
some particular differences due to the distance of the languages
involved; if you need it, I could look more carefully at the code. In:
http://wiki.apertium.org/wiki/Basque_and_Spanish/informe_2008
in the chapter "Transferencia" there is a general description of the
types of transfer rules for basque.
Regards,
Mireia
On Thu, Nov 14, 2013 at 5:02 PM, Hèctor Alòs i Font
<[email protected] <mailto:[email protected]>> wrote:
Mikel, Aida:
It's not a discussion about what is used in t1x and t2x, but in
http://wiki.apertium.org/wiki/French_and_Esperanto/Notoj_pri_versioj#.C5.9Ctupoj
(referencing to the problems explained in
http://wiki.apertium.org/wiki/Kelkaj_notoj_pri_la_svarmo_de_reguloj )
there is a discussion about what is done in the n-stage transfer
used in the French-to-Esperanto translator. In fact, the discussed
problem is not the limit between t1x and t2x, but what is done the
different t(2.n)x levels. I'm not sure it may help, but in any case...
Hèctor
2013/11/13 Mikel L. Forcada <[email protected] <mailto:[email protected]>>
Dear all,
Aida Sundetova, a 4th-year student from the Kazakh National
University
in Almaty is visiting the Universitat d'Alacant and we are working
together on apertium-eng-kaz (and we plan to do some kaz-eng). We
believe this language pair has a strategic value as much of
what we do
will be reused for other X-Turkic language pairs. In view of that
responsibility, we are compelled to do things right.
As you know, our three-level structural transfer is not
computationally
more powerful than the original one-level transfer, but it
makes it
possible to "factor out" some common .t1x operations into
higher-level
.t2x rules.
Aida and I are currently arriving to a point where we have to make
decisions as to what to put in .t1x and what to put in .t2x.
Many of our
language pairs have three-level structural transfer, and
therefore,
their developers have faced the same problems as Aida and I
have, but I
am not aware of any place where these decisions are explained.
So, before searching in existing language pairs and trying to
understand
other people's code (which is more or less like using
archaeology to
figure out what an ancient culture was), we would appreciate
it very
much for developers to come forward and give us some clues
about how
they did their job. Any informal narrative would be helpful.
I know
that this may involve some soul-searching (a.k.a.
elicitation), so I
appreciate your effort even more!
We plan to write this up as part of Aida's degree defense, and
we will
duly acknowledge any input there!
Thanks a lot
All the best
Mikel L. Forcada
--
Mikel L. Forcada (http://www.dlsi.ua.es/~mlf/
<http://www.dlsi.ua.es/%7Emlf/>)
Departament de Llenguatges i Sistemes Informàtics
Universitat d'Alacant
E-03071 Alacant, Spain
Phone: +34 96 590 9776 <tel:%2B34%2096%20590%209776>
Fax: +34 96 590 9326 <tel:%2B34%2096%20590%209326>
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--
Mikel L. Forcada (http://www.dlsi.ua.es/~mlf/)
Departament de Llenguatges i Sistemes Informàtics
Universitat d'Alacant
E-03071 Alacant, Spain
Phone: +34 96 590 9776
Fax: +34 96 590 9326
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