Paper Info
Title
GazPNE: annotation-free deep learning for place name extraction from microblogs leveraging gazetteer and synthetic data by rules
Abstract
Extracting precise location information from microblogs is a crucial task in many applications, particularly in disaster response, revealing where damages are, where people need assistance, and where help can be found. A crucial prerequisite to location extraction is place name extraction. In this paper, we present GazPNE: a hybrid approach to place name extraction which fuses rules, gazetteers, and deep learning techniques without requiring any manually annotated data. The core of the approach is to learn the intrinsic characteristics of multi-word place names with deep learning from gazetteers. Specifically, GazPNE consists of a rule-based system to select n-grams from the microblogs that potentially contain place names, and a C-LSTM model that decides if the selected n-gram is a place name or not. The C-LSTM is trained on 388.1 million examples containing 6.8 million positive examples with US and Indian place names extracted from OpenStreetMap and 381.3 million negative examples synthesized by rules. We evaluate GazPNE against the SoTA on a manually annotated 4,500 tweet dataset which contains 9,026 place names from three foods: 2016 in Louisiana (US), 2016 in Houston (US), and 2015 in Chennai (India). GazPNE achieves SotA performance on the test data with an F1 of 0.84.
Year
DOI
Venue
2022
10.1080/13658816.2021.1947507
INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE
Keywords
DocType
Volume
Place name extraction, gazetteer, OpenStreetMap, synthetic data, rule, microblog, deep learning
Journal
36
Issue
ISSN
Citations 
2
1365-8816
1
PageRank 
References 
Authors
0.35
0
7
Name
Order
Citations
PageRank
Xuke Hu110.35
Hussein S. Al-Olimat210.35
Jens Kersten310.35
Matti Wiegmann410.35
Friederike Klan510.35
Y. Sun6718.99
Hongchao Fan7177.44