Kentaro Unui


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A New Formalization of Probabilistic GLR Parsing
Kentaro Unui | Virach Sornlertlamvanich | Hozumi Tanaka | Takenobu Tokunaga
Proceedings of the Fifth International Workshop on Parsing Technologies

This paper presents a new formalization of probabilistic GLR language modeling for statistical parsing. Our model inherits its essential features from Briscoe and Carroll’s generalized probabilistic LR model, which obtains context-sensitivity by assigning a probability to each LR parsing action according to its left and right context. Briscoe and Carroll’s model, however, has a drawback in that it is not formalized in any probabilistically well-founded way, which may degrade its parsing performance. Our formulation overcomes this drawback with a few significant refinements, while maintaining all the advantages of Briscoe and Carroll’s modeling.