NooJ2009

Tozeur

2009-06-091/22

SynCro - Parsing Simple Croatian

Sentences

Kristina Vučković, Božo Bekavac, Zdravko DovedanUniversity of Zagreb, Faculty of Humanities and Social Science

{kvuckovi, bbekavac,zdovedan}@ffzg.hr

NooJ2009

Tozeur

2009-06-09

NooJ2009

Tozeur

2009-06-092/22

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

NooJ2009

Tozeur

2009-06-093/22

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

NooJ2009

Tozeur

2009-06-094/22

Sentance structure in Croatian

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Tozeur

2009-06-095/22

Recognition of: predicate node

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Tozeur

2009-06-096/22

Recognition of: subject node

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Tozeur

2009-06-097/22

Recognition of: direct object node

NooJ2009

Tozeur

2009-06-098/22

Recognition of: indirect object node

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Tozeur

2009-06-099/22

Recognition of: Adverbs of Time

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Tozeur

2009-06-0910/22

Recognition of: Adverbs of Place

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Tozeur

2009-06-0911/22

Exampless

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2009-06-0912/22

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Tozeur

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2009-06-0915/22

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Exampless

dislocated predicate

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Tozeur

2009-06-0917/22

Exampless

dislocated predicate

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Tozeur

2009-06-0918/22

Exampless

dislocated predicate

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Tozeur

2009-06-0919/22

Exampless

dislocated predicate and dislocated subject

NooJ2009

Tozeur

2009-06-0920/22

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

NooJ2009

Tozeur

2009-06-0921/22

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 fromMarch to April.

He was singing from Paris to Tozeur.

and Future Work

NooJ2009

Tozeur

2009-06-0922/22