图 书 馆
对于PCFGs和适配器语法的推理Inference for PCFGs and Adaptor Grammars |
|
| 课程网址: | http://videolectures.net/nipsworkshops09_johnson_ipcfgag/ |
| 主讲教师: | Mark Johnson |
| 开课单位: | 布朗大学 |
| 开课时间: | 2010-01-19 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | This talk describes the procedures we've developed for adaptor grammar inference. Adaptor grammars are a non-parametric extension to PCFGs that can be used to describe a variety of phonological and morphological language learning tasks. We start by reviewing an MCMC sampler for Probabilistic Context-Free Grammars that serves as the basis for adaptor grammar inference, and then explain how samples from a PCFG whose rules depend on the other sampled trees can be used as a proposal distribution in an MCMC procedure for estimating adaptor grammars. Finally we describe several optimizations that dramatically speed inference of complex adaptor grammars. |
| 关 键 词: | 适配器语法; 非参数扩展; PCFGs |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-06-02：毛岱琦(课程编辑志愿者) |
| 阅读次数: | 61 |