1. NooJ2009 Tozeur 2009-06-09 1/22 SynCro - Parsing Simple Croatian Sentences Kristina Vučković, Božo Bekavac, Zdravko Dovedan University of Zagreb, Faculty of Humanities and Social Science {kvuckovi, bbekavac,zdovedan} @ ffzg.hr NooJ2009 Tozeur 2009-06-09

2. NooJ2009 Tozeur 2009-06-09 2/22 Overview of the work  on our way to complete parse trees for Croatian sentences  building partial trees for simple Croatian sentences  favor of precision over recall  Building syntactic parse trees for Croatian is quite a challenge!  properties of Croatian language:  mostly free word (better to say constituent?) order → scrambling very frequent  could be a long distance between parts of predicate

3. NooJ2009 Tozeur 2009-06-09 3/22 Syntactic trees  at this stage, the following structures of parse trees are described  verb  subject - verb  subject - verb - direct object  subject - verb - direct (and, or indirect object)  in addition to all these combinations, we can detect  adverbial phrases of place and  adverbial phrases of time (temporal expressions)  Complex combinations (e.g. multiple PPs) are not described

4. NooJ2009 Tozeur 2009-06-09 4/22 Sentance structure in Croatian

5. NooJ2009 Tozeur 2009-06-09 5/22 Recognition of: predicate node

6. NooJ2009 Tozeur 2009-06-09 6/22 Recognition of: subject node

7. NooJ2009 Tozeur 2009-06-09 7/22 Recognition of: direct object node

8. NooJ2009 Tozeur 2009-06-09 8/22 Recognition of: indirect object node

9. NooJ2009 Tozeur 2009-06-09 9/22 Recognition of: Adverbs of Time

10. NooJ2009 Tozeur 2009-06-09 10/22 Recognition of: Adverbs of Place

11. NooJ2009 Tozeur 2009-06-09 11/22 Exampless

12. NooJ2009 Tozeur 2009-06-09 12/22 Exampless

13. NooJ2009 Tozeur 2009-06-09 13/22 Exampless

14. NooJ2009 Tozeur 2009-06-09 14/22 Exampless

15. NooJ2009 Tozeur 2009-06-09 15/22 Exampless

16. NooJ2009 Tozeur 2009-06-09 16/22 Exampless  dislocated predicate

17. NooJ2009 Tozeur 2009-06-09 17/22 Exampless  dislocated predicate

18. NooJ2009 Tozeur 2009-06-09 18/22 Exampless  dislocated predicate

19. NooJ2009 Tozeur 2009-06-09 19/22 Exampless  dislocated predicate and dislocated subject

20. NooJ2009 Tozeur 2009-06-09 20/22 Addition to the Lexicon  For recognizing Adverbials of Time and Place:  Adjectives +time / + place  R+vr  R+mt  Prepositions +time / + place  S+vr  S+mt

21. NooJ2009 Tozeur 2009-06-09 21/22 Problems  if there is a nominal predicate  if the node is a coordination made of 2 or more ’s of different gender  if has more than one annotation  ex.  The child was very smart. -> The child was ->was very smart.  ex.  The boy and a girl were very smart. ->The boy and a girl =>  ex.  He was singing from March to April.  He was singing from Paris to Tozeur. and Future Work

22. NooJ2009 Tozeur 2009-06-09 22/22