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external:tectomt:tutorial [2009/01/21 11:30]
kravalova |
external:tectomt:tutorial [2009/01/21 11:35]
kravalova |
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| ===== Your turn: more tasks ===== | ===== Your turn: more tasks ===== |
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| ==== SVO to SOV ==== | ==== SVO to SOV ==== |
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| **Motivation**: During translation from an SVO based language (English) to an SOV based language (Korean) we might need to change the word order from SVO to SOV. | **Motivation**: During translation from an SVO based language (e.g. English) to an SOV based language (e.g. Korean) we might need to change the word order from SVO to SOV. |
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| **Task**: Change the word order from SVO to SOV. | **Task**: Change the word order from SVO to SOV. |
| * For debugging, a method returning surface word order of a node is useful: ''$node<nowiki>-></nowiki>get_attr('ord')''. It can be used to print out nodes sorted by attribute ''ord''. | * For debugging, a method returning surface word order of a node is useful: ''$node<nowiki>-></nowiki>get_attr('ord')''. It can be used to print out nodes sorted by attribute ''ord''. |
| * Once you have node ''$object'' and node ''$verb'', use method ''$object<nowiki>-></nowiki>shift_before_node($verb)''. This method takes the whole subtree under node ''$object'' and counts the attributes ''ord'' (surface word order) so that all nodes in subtree under ''$object'' have smaller ''ord'' than ''$verb''. That is, the method rearranges the surface word order from VO to OV. | * Once you have node ''$object'' and node ''$verb'', use method ''$object<nowiki>-></nowiki>shift_before_node($verb)''. This method takes the whole subtree under node ''$object'' and counts the attributes ''ord'' (surface word order) so that all nodes in subtree under ''$object'' have smaller ''ord'' than ''$verb''. That is, the method rearranges the surface word order from VO to OV. |
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| ==== Prepositions ==== | ==== Prepositions ==== |
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| {{ external:tectomt:preps.png?200x80|}} | {{ external:tectomt:preps.png?200x80|Prepositions example}} |
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| **Motivation**: In dependency approach a question "where to hang prepositions" arises. In praguian style (PDT), prepositions are heads of the subtree and the noun/pronoun is dependent on the preposition. However, another ordering might be preferable: The noun/pronoun might be the head of subtree, while the preposition would take the role of a modifier. | **Motivation**: In dependency approach a question "where to hang prepositions" arises. In praguian style (PDT), prepositions are heads of the subtree and the noun/pronoun is dependent on the preposition. However, another ordering might be preferable: The noun/pronoun might be the head of subtree, while the preposition would take the role of a modifier. |
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| You are going to need these new methods: | You are going to need these new methods: |
| * ''my @children = $node<nowiki>-></nowiki>get_children'' | * ''my @children = $node<nowiki>-></nowiki>get_children()'' |
| * ''my $parent = $node<nowiki>-></nowiki>get_parent'' | * ''my $parent = $node<nowiki>-></nowiki>get_parent()'' |
| * ''$node<nowiki>-></nowiki>set_parent($parent)'' | * ''$node<nowiki>-></nowiki>set_parent($parent)'' |
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| //Hint//: | //Hint//: |
| * On analytical layer, you can use this test to recognize prepositions: ''$node<nowiki>-></nowiki>get_attr('afun') eq 'AuxP' '' | * On analytical layer, you can use this test to recognize prepositions: ''$node<nowiki>-></nowiki>get_attr('afun') eq 'AuxP' '' |
| * You can use block template in ''libs/blocks/BlockTemplate.pm''. To see the results, you can again use TrEd (''tmttred sample.tmt'') | * You can use block template in ''libs/blocks/BlockTemplate.pm''. |
| | * To see the results, you can again use TrEd (''tmttred sample.tmt'') |
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