2010/7/11 Jimmy O'Regan <[email protected]>:
> The attached patch adds a new mechanism to transfer rules: <exception>
This has been on my wishlist for a while =D
> Exception can contain a single <test> -- if the test evaluates to
> 'true', the current rule is ignored, and the last applicable rule is
> used instead (the implication being that it should only be used in
> rules whose <pattern> contains more than one <pattern-item>).
>
[snip]
> Motivation:
>
> The primary motivation was in dealing with Polish: highly inflected
> (few 'markers'), adjectives can come before or after the noun.
> Inflection *usually* gives enough information for proper segmentation,
> but handling it properly would be a matter of having individual rules
> for each gender, case, and number + each combination of words (i.e.,
> multiply number of NP rules by 70). I've seen recently that it would
> help in less inflected languages, so it's probably generally useful.
I just tested it for nb->nn, where I used it to avoid chunking adj.ind
n.def (the adjective is used adverbially, not modifying the noun),
which in some cases can be quite important:
Before:
$ echo Ledelsen liker dårlig fokuset på utøvere som Tommy
Ingebrigtsen|apertium -d . nb-nn
Leiinga likar det dårlege fokuset på utøvarar som Tommy Ingebrigtsen
≈ The management likes the bad focus on athletes such as Tommy Ingebrigtsen
After, correct meaning:
$ echo Ledelsen liker dårlig fokuset på utøvere som Tommy
Ingebrigtsen|apertium -d . nb-nn
Leiinga likar dårleg fokuset på utøvarar som Tommy Ingebrigtsen
≈ The management doesn't like ("likes badly") the focus on athletes
such as Tommy Ingebrigtsen
Of course, one can always acheive the same as <exception> by using
<choose><when> and duplicating the contents of the single-item rules,
but, well, that means duplicating content… this looks like it would be
a lot simpler to maintain (and less ugly than output macros).
I'm still trying to make it break :)
--
Kevin Brubeck Unhammer
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