Differences

This shows you the differences between two versions of the page.

--- external:tectomt:tutorial [2009/01/21 00:44]
popel
+++ external:tectomt:tutorial [2009/01/21 11:06]
kravalova
@@ Line 288: / Line 288: @@
 ==== Task ====
 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.
@@ Line 328: / Line 329: @@
 You are going to need these methods:
-  * ''my $root = $bundle->get_tree('tree_name')''
+  * ''my $root = $bundle<nowiki>-></nowiki>get_tree('tree_name')''
-  * ''my $attr = $node->get_attr('attr_name')''
+  * ''my $attr = $node<nowiki>-></nowiki>get_attr('attr_name')''
-  * ''$node->set_attr('attr_name',$attr_value)''
+  * ''$node<nowiki>-></nowiki>set_attr('attr_name',$attr_value)''
-  * ''my @eff_children = $node->get_eff_children()''
+  * ''my @eff_children = $node<nowiki>-></nowiki>get_eff_children()''
 //Note//: ''get_children()'' returns topological node children in a tree, while ''get_eff_children()'' returns node children in a linguistic sense. Mostly, these do not differ.
@@ Line 342: / Line 343: @@
 ===== Your turn: more tasks =====
@@ Line 359: / Line 361: @@
   * To find an object to a verb, look for objects among effective children of a verb (''$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.
@@ Line 382: / Line 391: @@
 ==== Prepositions ====
+{{ external:tectomt:preps.png?200x80|}}
 **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.
-TODO obrazek
 **Task**: The task is to rehang all prepositions as indicated at the picture. You may assume that prepositions have at most 1 child.
@@ Line 402: / Line 411: @@
 //Advanced version//: What happens in case of multiword prepositions? For example, ''because of'', ''instead of''. Can you handle it?

[ Back to the navigation ] [ Back to the content ]

Institute of Formal and Applied Linguistics Wiki

Differences