TY - GEN
T1 - A semantically compositional annotation scheme for time normalization
AU - Bethard, Steven
AU - Parker, Jonathan L.
N1 - Funding Information:
The project described was supported in part by R01LM010090 (THYME) from the National Library Of Medicine. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
PY - 2016
Y1 - 2016
N2 - We present a new annotation scheme for normalizing time expressions, such as three days ago, to computer-readable forms, such as 2016-03-07. The annotation scheme addresses several weaknesses of the existing TimeML standard, allowing the representation of time expressions that align to more than one calendar unit (e.g., the past three summers), that are defined relative to events (e.g., three weeks postoperative), and that are unions or intersections of smaller time expressions (e.g., Tuesdays and Thursdays). It achieves this by modeling time expression interpretation as the semantic composition of temporal operators like Union, Next, and After. We have applied the annotation scheme to 34 documents so far, producing 1104 annotations, and achieving inter-annotator agreement of 0.821.
AB - We present a new annotation scheme for normalizing time expressions, such as three days ago, to computer-readable forms, such as 2016-03-07. The annotation scheme addresses several weaknesses of the existing TimeML standard, allowing the representation of time expressions that align to more than one calendar unit (e.g., the past three summers), that are defined relative to events (e.g., three weeks postoperative), and that are unions or intersections of smaller time expressions (e.g., Tuesdays and Thursdays). It achieves this by modeling time expression interpretation as the semantic composition of temporal operators like Union, Next, and After. We have applied the annotation scheme to 34 documents so far, producing 1104 annotations, and achieving inter-annotator agreement of 0.821.
KW - Compositionality
KW - Normalization
KW - Time expressions
UR - http://www.scopus.com/inward/record.url?scp=85037093661&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85037093661&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85037093661
T3 - Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC 2016
SP - 3779
EP - 3786
BT - Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC 2016
A2 - Calzolari, Nicoletta
A2 - Choukri, Khalid
A2 - Mazo, Helene
A2 - Moreno, Asuncion
A2 - Declerck, Thierry
A2 - Goggi, Sara
A2 - Grobelnik, Marko
A2 - Odijk, Jan
A2 - Piperidis, Stelios
A2 - Maegaard, Bente
A2 - Mariani, Joseph
PB - European Language Resources Association (ELRA)
T2 - 10th International Conference on Language Resources and Evaluation, LREC 2016
Y2 - 23 May 2016 through 28 May 2016
ER -