Title
Unsupervised Grammar Induction with Depth-bounded PCFG.
Abstract
There has been recent interest in applying cognitively or empirically motivated bounds on recursion depth to limit the search space of grammar induction models (Ponvert et al., 2011; Noji and Johnson, 2016; Shain et al., 2016). This work extends this depth-bounding approach to probabilistic context-free grammar induction (DB-PCFG), which has a smaller parameter space than hierarchical sequence models, and therefore more fully exploits the space reductions of depth-bounding. Results for this model on grammar acquisition from transcribed child-directed speech and newswire text exceed or are competitive with those of other models when evaluated on parse accuracy. Moreover, grammars acquired from this model demonstrate a consistent use of category labels, something which has not been demonstrated by other acquisition models.
Year
DOI
Venue
2018
10.1162/tacl_a_00016
Transactions of the Association for Computational Linguistics
DocType
Volume
Citations 
Journal
abs/1802.08545
0
PageRank 
References 
Authors
0.34
4
5
Name
Order
Citations
PageRank
Lifeng Jin101.69
finale doshivelez257451.99
Timothy A. Miller37113.76
William Schuler4192.39
Lane Schwartz520918.01