Difference between revisions of "Morphotactic constraints with twol"

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This page describes how to use [[twol]] to implement morphotactic constraints. These are useful for modelling prefix and circumfix morphology.
  
This page describes how to use [[twol]] to implement morphotactic constraints. These are useful for modelling prefix and circumfix morphology.
   
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==Prefixes==
   
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Let's suppose you have a language like [[Avar]], where the first part of the verb stem changes for gender, for example:
   
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{|class=wikitable
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!colspan=3| бицине "to speak"
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|-
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| бицуна || {{sc|neu}}-иц-{{sc|aor}} || it speaks
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|-
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| вицуна || {{sc|msc}}-иц-{{sc|aor}} || he speaks, I (m.) speak, you (m.) speak
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|-
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| йицуна || {{sc|fem}}-иц-{{sc|aor}} || she speaks, I (f.) speak, you (f.) speak
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|-
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| рицуна || {{sc|pl}}-иц-{{sc|aor}} || they speak
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|-
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|}
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So, the obvious thing would be just to put all of the forms in the lexicon, like:
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<pre>
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LEXICON AOR
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%<aor%>:уна # ;
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LEXICON Verbs
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бицине%<v%>%<tv%>%<nt%>:биц AOR ;
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бицине%<v%>%<tv%>%<m%>:виц AOR ;
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бицине%<v%>%<tv%>%<f%>:йиц AOR ;
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бицине%<v%>%<tv%>%<pl%>:риц AOR ;
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</pre>
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But this is inefficient! What we would like to do is have a single lexicon for the gender prefixes,
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<pre>
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  +
LEXICON AOR
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  +
%<aor%>:уна # ;
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  +
LEXICON Prefixes
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%<nt%>:б%> Verbs ;
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%<m%>:в%> Verbs ;
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%<f%>:й%> Verbs ;
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%<pl%>:р%> Verbs ;
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LEXICON Verbs
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бицине%<v%>%<tv%>:иц AOR ; ! "говорить"
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</pre>
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This is great, but we have a problem... The tag for our prefix is in the wrong place!
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<pre>
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<nt>бицине<v><tv><aor>:б>ицуна
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<m>бицине<v><tv><aor>:в>ицуна
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<f>бицине<v><tv><aor>:й>ицуна
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<pl>бицине<v><tv><aor>:р>ицуна
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</pre>
   
 
==See also==
  
==See also==

Revision as of 17:46, 4 February 2017

This page describes how to use twol to implement morphotactic constraints. These are useful for modelling prefix and circumfix morphology.

Prefixes

Let's suppose you have a language like Avar, where the first part of the verb stem changes for gender, for example:

бицине "to speak"
бицуна neu-иц-aor it speaks
вицуна msc-иц-aor he speaks, I (m.) speak, you (m.) speak
йицуна fem-иц-aor she speaks, I (f.) speak, you (f.) speak
рицуна pl-иц-aor they speak

So, the obvious thing would be just to put all of the forms in the lexicon, like: 


LEXICON AOR

%<aor%>:уна # ;

LEXICON Verbs

бицине%<v%>%<tv%>%<nt%>:биц AOR ;
бицине%<v%>%<tv%>%<m%>:виц AOR ;
бицине%<v%>%<tv%>%<f%>:йиц AOR ;
бицине%<v%>%<tv%>%<pl%>:риц AOR ;

But this is inefficient! What we would like to do is have a single lexicon for the gender prefixes, 


LEXICON AOR

%<aor%>:уна # ;

LEXICON Prefixes

%<nt%>:б%> Verbs ;
%<m%>:в%> Verbs ;
%<f%>:й%> Verbs ;
%<pl%>:р%> Verbs ;

LEXICON Verbs

бицине%<v%>%<tv%>:иц AOR ; ! "говорить"

This is great, but we have a problem... The tag for our prefix is in the wrong place! 

<nt>бицине<v><tv><aor>:б>ицуна
<m>бицине<v><tv><aor>:в>ицуна
<f>бицине<v><tv><aor>:й>ицуна
<pl>бицине<v><tv><aor>:р>ицуна

See also

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