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external:tectomt:tutorial [2009/01/20 17:57]
popel |
external:tectomt:tutorial [2009/01/21 00:44]
popel |
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| It is assumed that finite clauses can be translated independently, which would reduce computational complexity or make parallel translation possible. We could even use hybrid translation - each finite clause could be translated by the most self-confident translation system. In this task, we are going to split the sentence into finite clauses. | It is assumed that finite clauses can be translated independently, which would reduce computational complexity or make parallel translation possible. We could even use hybrid translation - each finite clause could be translated by the most self-confident translation system. In this task, we are going to split the sentence into finite clauses. |
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| ==== Task ==== | ==== Task ==== |
| A block which, given an analytical tree (''SEnglishA''), fills each ''a-node'' with boolean attribute ''is_head'' which is set to ''1'' if the ''a-node'' corresponds to a finite verb, and to ''0'' otherwise. | A block which, given an analytical tree (''SEnglishA''), fills each ''a-node'' with boolean attribute ''is_clause_head'' which is set to ''1'' if the ''a-node'' corresponds to a finite verb, and to ''0'' otherwise. |
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| ==== Instructions ==== | ==== Instructions ==== |
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| There is a block template with hints in ''libs/blocks/Tutorial/Mark_heads.pm''. You should edit the block so that the ouput of this block is the same a-tree, in addition with attribute ''is_head'' attached to each ''a-node''. There is also a printing block ''libs/blocks/Print_finite_clauses.pm'' which will print out the ''a-nodes'' grouped by clauses: | There is a block template with hints in ''libs/blocks/Tutorial/Mark_heads.pm''. You should edit the block so that the output of this block is the same a-tree, in addition with attribute ''is_clause_head'' attached to each ''a-node''. There is also a printing block ''libs/blocks/Print_finite_clauses.pm'' which will print out the ''a-nodes'' grouped by clauses: |
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| <code bash> | <code bash> |
| brunblocks -S -o \ | brunblocks -S -o \ |
| Tutorial::Mark_heads \ | Tutorial::Mark_heads \ |
| Tutorial::Print_finite_clauses -- sample.tmt | Tutorial::Print_finite_clauses \ |
| | -- sample.tmt |
| </code> | </code> |
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| You are going to need these methods: | You are going to need these methods: |
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| * ''my root = $bundle->get_tree('tree_name')'' | * ''my $root = $bundle->get_tree('tree_name')'' |
| * ''my $attr = $node->get_attr('attr_name')'' | * ''my $attr = $node->get_attr('attr_name')'' |
| * ''$node->set_attr('attr_name',$attr_value)'' | * ''$node->set_attr('attr_name',$attr_value)'' |
| * ''my @eff_children = $node->get_eff_children()'' | * ''my @eff_children = $node->get_eff_children()'' |
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| //Note//: ''get_children'' returns topological node children in a tree, while ''get_eff_children'' returns node children in a linguistic sense. Mostly, these do not differ. | //Note//: ''get_children()'' returns topological node children in a tree, while ''get_eff_children()'' returns node children in a linguistic sense. Mostly, these do not differ. |
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| //Advanced version//: The output of our block might still be incorrect in special cases - we don't solve coordination and subordinate conjunctions. | //Advanced version//: The output of our block might still be incorrect in special cases - we don't solve coordination (see the second sentence in sample.txt) and subordinate conjunctions. |
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