other,6-2-P05-1010,ak <term> model </term> is an extension of <term> PCFG </term> in which <term> non-terminal symbols
tech,17-3-P05-1010,ak <term> PCFG-LA model </term> using an <term> EM-algorithm </term> . Because <term> exact parsing </term>
tech,1-4-P05-1010,ak <term> EM-algorithm </term> . Because <term> exact parsing </term> with a <term> PCFG-LA </term> is NP-hard
tech,34-5-P05-1010,ak which is comparable to that of an <term> unlexicalized PCFG parser </term> created using extensive <term> manual
model,9-5-P05-1010,ak the <term> Penn WSJ corpus </term> , our <term> automatically trained model </term> gave a performance of 86.6 % ( Fa5
tech,40-5-P05-1010,ak parser </term> created using extensive <term> manual feature selection </term> . This paper considers the problem
lr-prod,4-5-P05-1010,ak compared . In experiments using the <term> Penn WSJ corpus </term> , our <term> automatically trained
other,8-1-P05-1010,ak generative probabilistic model </term> of <term> parse trees </term> , which we call <term> PCFG-LA </term>
other,14-2-P05-1010,ak non-terminal symbols </term> are augmented with <term> latent variables </term> . <term> Fine-grained CFG rules </term>
model,13-3-P05-1010,ak <term> parsed corpus </term> by training a <term> PCFG-LA model </term> using an <term> EM-algorithm </term>
other,1-2-P05-1010,ak we call <term> PCFG-LA </term> . This <term> model </term> is an extension of <term> PCFG </term>
model,0-3-P05-1010,ak with <term> latent variables </term> . <term> Fine-grained CFG rules </term> are automatically induced from a <term>
lr,8-3-P05-1010,ak </term> are automatically induced from a <term> parsed corpus </term> by training a <term> PCFG-LA model </term>
other,14-1-P05-1010,ak <term> parse trees </term> , which we call <term> PCFG-LA </term> . This <term> model </term> is an extension
other,4-1-P05-1010,ak are available . This paper defines a <term> generative probabilistic model </term> of <term> parse trees </term> , which
other,5-4-P05-1010,ak Because <term> exact parsing </term> with a <term> PCFG-LA </term> is NP-hard , several approximations
other,9-2-P05-1010,ak extension of <term> PCFG </term> in which <term> non-terminal symbols </term> are augmented with <term> latent variables
hide detail