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external:tectomt:tutorial [2009/01/21 10:33] kravalova |
external:tectomt:tutorial [2009/01/21 10:53] kravalova |
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===== Your turn: more tasks ===== | ===== Your turn: more tasks ===== |
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* To find an object to a verb, look for objects among effective children of a verb (''$child->get_attr('afun') eq 'Obj' ''). That implies working on analytical layer. | * To find an object to a verb, look for objects among effective children of a verb (''$child->get_attr('afun') eq 'Obj' ''). That implies working on analytical layer. |
* Once you have node ''$object'' and node ''$verb'', use method TODO | * For debugging, a method returning surface word order of a node is useful: ''$node->get_attr('ord')''. It can be used to print out nodes sorted by attribute ''ord''. |
* For debugging, a method returning word order of a node is useful: ''$node->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 ''$object->shift_before_node($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 ==== | |
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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. | |
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| ==== Prepositions ==== |
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| {{ external:tectomt:preps.png?200x80|}} |
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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. |
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**Task**: The task is to rehang all prepositions as indicated at the picture. You may assume that prepositions have at most 1 child. | **Task**: The task is to rehang all prepositions as indicated at the picture. You may assume that prepositions have at most 1 child. |
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//Advanced version//: What happens in case of multiword prepositions? For example, ''because of'', ''instead of''. Can you handle it? | //Advanced version//: What happens in case of multiword prepositions? For example, ''because of'', ''instead of''. Can you handle it? |
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