Identification of Fine-Grained Location Mentions in Crisis Tweets
This work addresses the need for more precise location information in crisis response, but it is incremental as it builds on existing sequence tagging methods with new datasets.
The paper tackled the problem of identifying fine-grained location mentions in crisis tweets by assembling two manually annotated datasets and evaluating state-of-the-art deep learning models, achieving performance improvements in both in-domain and cross-domain settings.
Identification of fine-grained location mentions in crisis tweets is central in transforming situational awareness information extracted from social media into actionable information. Most prior works have focused on identifying generic locations, without considering their specific types. To facilitate progress on the fine-grained location identification task, we assemble two tweet crisis datasets and manually annotate them with specific location types. The first dataset contains tweets from a mixed set of crisis events, while the second dataset contains tweets from the global COVID-19 pandemic. We investigate the performance of state-of-the-art deep learning models for sequence tagging on these datasets, in both in-domain and cross-domain settings.