LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan...
-
Upload
felicity-griffin -
Category
Documents
-
view
216 -
download
0
Transcript of LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan...
![Page 1: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/1.jpg)
LING 6520: Comparative Topics in Linguistics (from a computational perspective)Martha Palmer
Jan 15, 2008
1
![Page 2: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/2.jpg)
What does Linguistics offer Computational Lexical Semantics?
What does Computational Lexical Semantics offer Linguistics?
What can we do together?
![Page 3: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/3.jpg)
Linguistics → CLS
• Syntactic structure – dependencies• Jackendoff
– Lexical Conceptual Structures• Fillmore, Talmy, Dowty, ….
– Case frames, conceptual analyses, proto-roles,….• Levin’s English verb classes
– Other languages?• Lexicographic sense distinctions• Discourse structure• Event representations
![Page 4: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/4.jpg)
CLS → Linguistics
• Quantitative analysis of data– Frequency counts, mutual information, automatic
clustering, new & varied classifications– Word co-occurrences, subcat frame distributions, pp
attachment preferences, word alignments– tomorrow
• Grammatical formalisms – TAG’s, LFG’s, CCG’s, HPSG’s– Alternative building blocks for human sentence
processing – models of regular sense extensions
![Page 5: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/5.jpg)
Feature-based Lexicalized Tree-Adjoining Grammars
Joshi,et al 75, Joshi 85,
• Elementary trees – Initial trees– Auxiliary trees
• Two operations– Substitution– Adjunction
![Page 6: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/6.jpg)
Same event - different syntactic frames
John broke windows. SUBJ VERB OBJ
Windows broke. SUBJ VERB
![Page 7: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/7.jpg)
Syntactic Parses
![Page 8: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/8.jpg)
Elementary Trees
![Page 9: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/9.jpg)
SubstitutionS
V
NP↓
NP↓
VP
break
NP
John
NP
the
Ndet
window
![Page 10: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/10.jpg)
SubstitutionS
V
NP↓
NP↓
VP
break
NP
John
NP↓
the
Ndet
window
![Page 11: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/11.jpg)
Derived TreeS
V
NP↓
NP ↓
VP
John
the
N
break
det
window
![Page 12: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/12.jpg)
Feature-based SubstitutionS
V
NP↓
NP↓
VP+sing +past
break
NP+sing
John
NP
the
Ndet
window
![Page 13: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/13.jpg)
4/1/04
Derived Tree w/ FeaturesS
V
NP+sing
NP↓
VP +sing +past
John
the
N
break
det
window
![Page 14: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/14.jpg)
4/1/04
AdjunctionS
V
NP↓
NP↓
VP
John
the
N
break
det
window
VP
quickly
VP *Adv
![Page 15: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/15.jpg)
4/1/04
Adjunction (cont.)S
NP↓
JohnV
VP *
break
NP↓
the
Ndet
window
VP
quickly
Adv
![Page 16: LING 6520: Comparative Topics in Linguistics (from a computational perspective) Martha Palmer Jan 15, 2008 1.](https://reader035.fdocuments.in/reader035/viewer/2022062409/5697c00f1a28abf838cca542/html5/thumbnails/16.jpg)
4/1/04
Extending Senses Through Adjunction