[ Skip to the content ]

Institute of Formal and Applied Linguistics Wiki

[ Back to the navigation ]

You are here: start » external » tectomt » tutorial

Differences

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

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
external:tectomt:tutorial [2009/01/22 10:34]
kravalova 		external:tectomt:tutorial [2009/01/22 11:18]
kravalova
Line 20: Line 20:
   * Your shell is bash   * Your shell is bash
   * You have basic experience with bash and can read basic Perl   * You have basic experience with bash and can read basic Perl
 +
  
  
Line 52: Line 53:
     source ~/BIG/tectomt/config/init_devel_environ.sh     source ~/BIG/tectomt/config/init_devel_environ.sh
 </code> </code>
 +
 +  * In your ''.bash_profile'' file, add line 
 +
 +<code bash>
 +    source .bashrc
 +</code>
 +
 +
  
  
Line 115: Line 124:
  
 There are also other directories for other purpose blocks, for example blocks which only print out some information go to ''libs/Print''. Our tutorial blocks are in ''libs/blocks/Tutorial/''. There are also other directories for other purpose blocks, for example blocks which only print out some information go to ''libs/Print''. Our tutorial blocks are in ''libs/blocks/Tutorial/''.
 +
  
  
Line 142: Line 152:
   * Each bundle contains tree shaped sentence representations on various linguistic layers. In our example ''sample.tmt'' we have morphological tree (''SEnglishM'') in each bundle. Later on, also an analytical layer (''SEnglishA'') will appear in each bundle as we proceed with our analysis.    * Each bundle contains tree shaped sentence representations on various linguistic layers. In our example ''sample.tmt'' we have morphological tree (''SEnglishM'') in each bundle. Later on, also an analytical layer (''SEnglishA'') will appear in each bundle as we proceed with our analysis. 
   * Trees are formed by nodes and edges. Attributes can be attached only to nodes. Edge's attributes must be equivalently stored as the lower node's attributes. Tree's attributes must be stored as attributes of the root node.   * Trees are formed by nodes and edges. Attributes can be attached only to nodes. Edge's attributes must be equivalently stored as the lower node's attributes. Tree's attributes must be stored as attributes of the root node.
 +
 +
 +
 +
  
  
Line 203: Line 217:
  
 we can examine our ''sample.tmt'' again. Really, an analytical layer ''SEnglishA'' describing a dependency tree with analytical functions (''<afun>'') has been added to each bundle. we can examine our ''sample.tmt'' again. Really, an analytical layer ''SEnglishA'' describing a dependency tree with analytical functions (''<afun>'') has been added to each bundle.
 +
 +Blocks can also be parametrized. For syntax parser, we might want to use a smaller but faster model. To achieve this, replace the line
 +
 +<code bash>
 +SEnglishM_to_SEnglishA::McD_parser_local \
 +</code>
 +
 +with
 +
 +<code bash>
 +SEnglishM_to_SEnglishA::McD_parser_local MT_PARAM_MCD_EN_MODEL=conll_mcd_order2_0.1.model \
 +</code>
  
 You can view the trees in ''sample.tmt'' with TrEd by typing You can view the trees in ''sample.tmt'' with TrEd by typing
Line 210: Line 236:
 </code> </code>
  
 +Try to click on some nodes to see their parameters (tag, lemma, form, analytical function etc).
 +
 +//Note//: For more information about tree editor TrEd, see [[http://ufal.mff.cuni.cz/~pajas/tred/ar01-toc.html|TrEd User's Manual]].
  
  
Line 267: Line 296:
  
 Attributes of documents, bundles or nodes can be accessed by attribute getters and setters, for example:  Attributes of documents, bundles or nodes can be accessed by attribute getters and setters, for example: 
 +
   * ''$node<nowiki>-></nowiki>get_attr($attr_name)''   * ''$node<nowiki>-></nowiki>get_attr($attr_name)''
   * ''$node<nowiki>-></nowiki>set_attr($attr_name, $attr_value)''   * ''$node<nowiki>-></nowiki>set_attr($attr_name, $attr_value)''
 +
 +Some interesting attributes on morphologic layer are ''form'', ''lemma'' and ''tag''. Some interesting attributes on analytical layer are ''afun'' (analytical function) and ''ord'' (surface word order). To reach ''form'', ''lemma'' or ''tag'' from analytical layer, that is, when calling this attribute on an ''a-node'', you use ''$a_node->get_attr('m/form')'' and the same way for ''lemma'' and ''tag''. The easiest way to see the node attributes is to click on the node in TrEd:
 +
 +<code bash>
 +tmttred sample.tmt
 +</code>
  
 Our tutorial block ''Print_node_info.pm'' is ready to use. You only need to add this block to our scenario, e.g. as a new Makefile target: Our tutorial block ''Print_node_info.pm'' is ready to use. You only need to add this block to our scenario, e.g. as a new Makefile target:
Line 307: Line 343:
 ==== Task ==== ==== 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. 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 354: Line 394:
   * ''my @eff_children = $node<nowiki>-></nowiki>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.+//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. If interested, see Figure 1 in [[http://ufal.mff.cuni.cz/pdt2.0/doc/tools/tred/bn-tutorial.html|btred tutorial]].
  
 +//Hint//: Finite clauses in English usually require grammatical subject to be present.
  
 +==== Advanced version ====
  
-//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.+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.
  
  
  
 ===== Your turn: more tasks ===== ===== Your turn: more tasks =====
 +
  
  
Line 388: Line 431:
   * 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 ''$object'' and re-counts the attributes ''ord'' (surface word order) so that all nodes in subtree under ''$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 re-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.
  
-**Advanced version**: This solution shifts object (or more objects) of a verb just in front of that verb node. So f.e.: //Mr. Brown has urged MPs.// changes to: //Mr. Brown has MPs urged.// You can try to change this solution, so the final sentence would be: //Mr. Brown MPs has urged.// You may need a method ''$node->shift_after_subtree($root_of_that_subtree)''. +**Advanced version**: This solution shifts object (or more objects) of a verb just in front of that verb node. So f.e.: //Mr. Brown has urged MPs.// changes to: //Mr. Brown has MPs urged.// You can try to change this solution, so the final sentence would be: //Mr. Brown MPs has urged.// You may need a method ''$node->shift_after_subtree($root_of_that_subtree)''. Subjects should have attribute '''afun' eq 'Sb'''. 
-Subjects should have attribute '''afun' eq 'Sb'''.+
  
  
Line 440: Line 483:
 //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'')   * To see the results, you can again use TrEd (''tmttred sample.tmt'')
  
 **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?
 +
 +
  
  
  
 ===== Further information ===== ===== Further information =====
-  * [[http://ufallab2.ms.mff.cuni.cz/~bojar/cruise_control_tmt/last_doc/generated/guide/guidelines.html|TectoMT Developer's Guide]] - obsolete+  * [[http://ufallab2.ms.mff.cuni.cz/~bojar/cruise_control_tmt/last_doc/generated/guide/guidelines.html|TectoMT Developer's Guide]]
   * Questions? Ask ''kravalova'' at ''ufal.mff.cuni.cz''   * Questions? Ask ''kravalova'' at ''ufal.mff.cuni.cz''
   * Solutions to this tutorial tasks are in ''libs/blocks/Tutorial/*solution*.pm''.   * Solutions to this tutorial tasks are in ''libs/blocks/Tutorial/*solution*.pm''.
-  * [[http://ufal.mff.cuni.cz/~pajas/tred/|TrEd]] - tree editor +  * [[http://ufal.mff.cuni.cz/~pajas/tred/|TrEd]], [[http://ufal.mff.cuni.cz/~pajas/tred/ar01-toc.html|TrEd User's Manual]] - tree editor
- +
  
  

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