Paper: Extracting Events with Informal Temporal References in Personal Histories in Online Communities

ACL ID P13-2145
Title Extracting Events with Informal Temporal References in Personal Histories in Online Communities
Venue Annual Meeting of the Association of Computational Linguistics
Session Short Paper
Year 2013
Authors

We present a system for extracting the dates of illness events (year and month of the event occurrence) from posting histo- ries in the context of an online medical support community. A temporal tagger re- trieves and normalizes dates mentioned in- formally in social media to actual month and year referents. Building on this, an event date extraction system learns to in- tegrate the likelihood of candidate dates extracted from time-rich sentences with temporal constraints extracted from event- related sentences. Our integrated model achieves 89.7% of the maximum perfor- mance given the performance of the tem- poral expression retrieval step.