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UID:/NewsandEvents/Archives/2008/newsitem/2428/13-
 August-2008-Computational-Linguistics-Seminar-Reut
 -Tsarfaty
DTSTAMP:20080717T000000
SUMMARY:Computational Linguistics Seminar, Reut Ts
 arfaty
ATTENDEE;ROLE=Speaker:Reut Tsarfaty
DTSTART;TZID=Europe/Amsterdam:20080813T153000
DTEND;TZID=Europe/Amsterdam:20080813T000000
LOCATION:P3.27
DESCRIPTION:State-of-the-art statistical parsing m
 odels applied to free word-order languages tend to
  underperform compared to, e.g., parsing English. 
 Constituency-based models often fail to capture ge
 neralizations that cannot be stated in structural 
 terms, and dependency-based models employ a ~singl
 e-head~ assumption that often breaks in the face o
 f multiple exponence. In this paper we suggest tha
 t the position of a constituent is a form manifest
 ation of its grammatical function, one among vario
 us possible means of realization. We develop the R
 elational-Realizational approach to parsing in whi
 ch we untangle the projection of grammatical funct
 ions and their means of realization to allow for p
 hrase-structure variability and morphological-synt
 actic interaction. We empirically demonstrate the 
 application of our approach to parsing Modern Hebr
 ew, obtaining 7% error reduction from previously r
 eported results.    For more information, see http
 s://www.illc.uva.nl/LaCo/CLS/ or http://staff.scie
 nce.uva.nl/~rtsarfat/coling08.pdf
X-ALT-DESC;FMTTYPE=text/html:\n      <p>\n        
 State-of-the-art statistical parsing models applie
 d to free word-order languages tend to underperfor
 m compared to, e.g., parsing English. Constituency
 -based models often fail to capture generalization
 s that cannot be stated in structural terms, and d
 ependency-based models employ a ~single-head~ assu
 mption that often breaks in the face of multiple e
 xponence. In this paper we suggest that the positi
 on of a constituent is a form manifestation of its
  grammatical function, one among various possible 
 means of realization. We develop the Relational-Re
 alizational approach to parsing in which we untang
 le the projection of grammatical functions and the
 ir means of realization to allow for phrase-struct
 ure variability and morphological-syntactic intera
 ction. We empirically demonstrate the application 
 of our approach to parsing Modern Hebrew, obtainin
 g 7% error reduction from previously reported resu
 lts.\n      </p>\n    \n      <p>\n        For mor
 e information, see <a target="_blank" href="https:
 //www.illc.uva.nl/LaCo/CLS/">https://www.illc.uva.
 nl/LaCo/CLS/</a> or\n        <a target="_blank" hr
 ef="http://staff.science.uva.nl/~rtsarfat/coling08
 .pdf">http://staff.science.uva.nl/~rtsarfat/coling
 08.pdf</a>\n      </p>\n    
URL:/NewsandEvents/Archives/2008/newsitem/2428/13-
 August-2008-Computational-Linguistics-Seminar-Reut
 -Tsarfaty
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