Title
Neural Factor Graph Models For Cross-Lingual Morphological Tagging
Abstract
Morphological analysis involves predicting the syntactic traits of a word (e.g. {POS: Noun, Case: Acc, Gender: Fem}). Previous work in morphological tagging improves performance for low-resource languages (LRLs) through cross-lingual training with a high-resource language (HRL) from the same family, but is limited by the strict-often false-assumption that tag sets exactly overlap between the HRL and LRL. In this paper we propose a method for cross-lingual morphological tagging that aims to improve information sharing between languages by relaxing this assumption. The proposed model uses factorial conditional random fields with neural network potentials, making it possible to (1) utilize the expressive power of neural network representations to smooth over superficial differences in the surface forms, (2) model pair-wise and transitive relationships between tags, and (3) accurately generate tag sets that are unseen or rare in the training data. Experiments on four languages from the Universal Dependencies Treebank (Nivre et al., 2017) demonstrate superior tagging accuracies over existing cross-lingual approaches.(1)
Year
DOI
Venue
2018
10.18653/v1/p18-1247
PROCEEDINGS OF THE 56TH ANNUAL MEETING OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS (ACL), VOL 1
Field
DocType
Volume
Conditional random field,Factor graph,Pairwise comparison,Computer science,Noun,Artificial intelligence,Treebank,Natural language processing,Artificial neural network,Syntax,Transitive relation
Journal
abs/1805.04570
Citations 
PageRank 
References 
1
0.35
20
Authors
3
Name
Order
Citations
PageRank
Chaitanya Malaviya150.84
Matthew Gormley28410.25
Graham Neubig3989130.31