Title :
A Tree Probability Generation Using VB-EM for Thai PGLR Parser
Author :
Trakultaweekoon, Kanokorn ; Ruangrajitpakorn, Taneth ; Boonkwan, Prachya ; Supnithi, Thepchai
Author_Institution :
Human Language Technol. Lab., Nat. Electron. & Comput. Technol. Center, Pathumthani, Thailand
Abstract :
In this paper, we applied VB-EM algorithm to generate a probability of constituent combination for PGLR parser. Three linguistic features which are simple PCFG, head-outward dependency and head-emission were calculated. The probabilities were used in a parsing process to find the best probable output tree. From our experiment, the parsing result from a combination of all features for first path and 3-best path are 56.61% and 78.58% respectively.
Keywords :
Bayes methods; natural language processing; probability; tree data structures; Thai PGLR parser; VB-EM; linguistic features; tree probability generation; Books; Syntactics; PGLR parser; Thai parser; Tree Probability; Variational Bayesian EM;
Conference_Titel :
Asian Language Processing (IALP), 2010 International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9063-9
DOI :
10.1109/IALP.2010.74
