If “it” were “then”, then when was “it”? Establishing the anaphoric role of “then”

Georgiana Puşcaşu, Ruslan Mitkov


Abstract
The adverb "then" is among the most frequent Englishtemporal adverbs, being also capable of filling a variety of semantic roles. The identification of anaphoric usages of "then"is important for temporal expression resolution, while thetemporal relationship usage is important for event ordering. Given that previous work has not tackled the identification and temporal resolution of anaphoric "then", this paper presents a machine learning approach for setting apart anaphoric usages and a rule-based normaliser that resolves it with respect to an antecedent. The performance of the two modules is evaluated. The present paper also describes the construction of an annotated corpus and the subsequent derivation of training data required by the machine learning module.
Anthology ID:
L06-1424
Volume:
Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06)
Month:
May
Year:
2006
Address:
Genoa, Italy
Editors:
Nicoletta Calzolari, Khalid Choukri, Aldo Gangemi, Bente Maegaard, Joseph Mariani, Jan Odijk, Daniel Tapias
Venue:
LREC
SIG:
Publisher:
European Language Resources Association (ELRA)
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Pages:
Language:
URL:
http://www.lrec-conf.org/proceedings/lrec2006/pdf/680_pdf.pdf
DOI:
Bibkey:
Cite (ACL):
Georgiana Puşcaşu and Ruslan Mitkov. 2006. If “it” were “then”, then when was “it”? Establishing the anaphoric role of “then”. In Proceedings of the Fifth International Conference on Language Resources and Evaluation (LREC’06), Genoa, Italy. European Language Resources Association (ELRA).
Cite (Informal):
If “it” were “then”, then when was “it”? Establishing the anaphoric role of “then” (Puşcaşu & Mitkov, LREC 2006)
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PDF:
http://www.lrec-conf.org/proceedings/lrec2006/pdf/680_pdf.pdf