Improved Parser for Simple Croatian Sentences
description
Transcript of Improved Parser for Simple Croatian Sentences
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
1/22
Improved Parser for Simple Croatian Sentences
Kristina Vučković, Božo Bekavac, Zdravko DovedanUniversity of Zagreb, Faculty of Humanities and Social Science
{kvuckovi, bbekavac,zdovedan}@ffzg.hr
NooJ2010Komotini
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
2/12
Problems
if there is a nominal predicate
if the <NP> node is a coordination made of 2 or more <NP>’s of different gender
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 =><NP+p+m>
Last Year’sSolved
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
3/12
Nominal Predicate simple <NP>
single noun He is a boy.
complex <NP> single noun + any number of adjectives,
pronouns, numerals proceeding and agreeing with the noun in number, gender and case He is my young friend.
single pronoun He is mine.
single adjective He is young.
single numeral He is the first.
adverb He is great.
redefined <NP><(PRO|A|M)*N><(PRO|A|M)*PRO><(PRO|A|M)*A><(PRO|A)*M>
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
4/12
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
Examples
Pravda i opraštanje su dva temeljna stupa mira. Justice and
forgiveness are two main pillars of peace.
Cijene su izuetno povoljne. Prices are
extremely affordable.
To je izvrsno. This is great.
NooJ2010Komotini5/12
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
Measures and Explanations
NooJ2010Komotini6/12
<to be,VP> <NP+Nom>=Adjective same form as <VP+Passive>Knjiga je napisana… The book is written…Napisana knjiga je … The written book is…
Precision:
Recall:
72,72
69,56
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
7/12
Coordination of multiple <NP> nodes1. all <NP> are in the same gender <NP+f<NP+fjabuka>, <NP+fkruška> i
<NP+fšljiva>> an apple, a pear and a plum
2. combination of masculine and feminine <NP> <NP+m<NP+fjabuka>, <NP+fkruška> i
<NP+mananas>> an apple, a pear and a pineapple
3. combination of masculine and neutral <NP> <NP+m<NP+mananas> i <NP+ndijete>>
a pineapple and a child4. combination of neutral and feminine <NP> <NP+m<NP+fjabuka> i <NP+ndijete>>
an apple and a child
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
8/12
Coordination of two or more proper nouns <NP+mZagreb> i <NP+mDubrovnik> <NP+mZagreb> i <NP+fBarcelona>
<NP+mTin Ujdur> i <NP+mFilip Kocijan>
<NP+fEma Ujdur> i <NP+mFilip Kocijan>
<NP+mUjdur> i <NP+mKocijan> <NP+fUjdur> i <NP+fKocijan> <NP+fUjdur> i <NP+mKocijan>
<NP+m ><NP+m >
<NP+m ><NP+m >
Last Names only
<NP+m > su otišli
<NP+f > su otišle
<NP+m > su otišli
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
9/12
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
NooJ2010Komotini
10/12
Example of concordance
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
Measures
NooJ2010Komotini11/12
Precision:
Recall:
100
90
Imp
rove
d P
arse
r fo
r S
imp
le C
roat
ian
Sen
ten
ces
for your attention.
Thank you
NooJ2010Komotini12/12