An HPSG parser with CFG filtering
An HPSG parser with CFG filtering
复制标题
具有 CFG 过滤功能的 HPSG 解析器
DOI:
10.1017/s1351324900002412
复制
发表时间:
2000
影响因子:
2.5
通讯作者:
Junichi Tsujii
中科院分区:
文献类型:
--
作者:
Kentaro Torisawa;K. Nishida;Yusuke Miyao;Junichi Tsujii
This article presents an HPSG parser using a technique called CFG filtering. The parser predicts possible parse trees using a CFG generated automatically from a given HPSG-based grammar. Parsing costs are reduced because unification is applied only to the predicted parse trees. In other words, parsing is speeded up because the parser avoids unnecessary unification by eliminating impossible parse trees. We show the method for generating a CFG from an HPSG-based grammar and outline a parsing scheme using the CFG. The effectiveness of the parsing scheme is shown through experimental results obtained by using several HPSG-based grammars, including the LinGO grammar.