Title: | LTAG-spinal and the Treebank: A new resource for incremental, dependency and semantic parsing |
Authors: | Shen, Libin Champollion, Lucas Joshi, Aravind |
Keywords: | Tree Adjoining Grammar;LTAG-spinal;Treebank;Dependency parsing |
Issue Date: | 1-Mar-2008 |
Publisher: | Springer Netherlands |
Citation: | Shen, Libin, Lucas Champollion, and Aravind K. Joshi (2008). LTAG-spinal and the Treebank: A new resource for incremental, dependency and semantic parsing. Language Resources and Evaluation, 42(1): 1-19. |
Abstract: | We introduce LTAG-spinal, a novel variant of traditional Lexicalized Tree Adjoining Grammar (LTAG) with desirable linguistic, computational and statistical properties. Unlike in traditional LTAG, subcategorization frames and the argument-adjunct distinction are left underspecified in LTAG-spinal. LTAG-spinal with adjunction constraints is weakly equivalent to LTAG. The LTAG-spinal formalism is used to extract an LTAG-spinal Treebank from the Penn Treebank with Propbank annotation. Based on Propbank annotation, predicate coordination and LTAG adjunction structures are successfully extracted. The LTAG-spinal Treebank makes explicit semantic relations that are implicit or absent from the original PTB. LTAG-spinal provides a very desirable resource for statistical LTAG parsing, incremental parsing, dependency parsing, and semantic parsing. This treebank has been successfully used to train an incremental LTAG-spinal parser and a bidirectional LTAG dependency parser. |
URI: | http://dx.doi.org/10.1007/s10579-007-9043-7 http://hdl.handle.net/2451/31837 |
ISSN: | 1574-020X 1572-8412 |
Appears in Collections: | Lucas Champollion's publications |
Files in This Item:
File | Description | Size | Format | |
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ltag-spinal.pdf | LTAG-spinal and the Treebank | 127.63 kB | Adobe PDF | View/Open |
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