图 书 馆
学习翻译：统计和计算分析Learning to Translate: statistical and computational analysis |
|
| 课程网址: | http://videolectures.net/smartdw09_turchi_ltt/ |
| 主讲教师: | Marco Turchi |
| 开课单位: | 布里斯托大学 |
| 开课时间: | 2009-07-01 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | In this talk, an extensive experimental study of a Statistical Machine Translation system, Moses, from the point of view of its learning capabilities is presented. Very accurate Learning Curves are obtained, by using high-performance computing, and extrapolations of the projected performance of thesystem under different conditions are provided. Our experiments suggest: 1. The representation power of the system is not currently a limitation to its performance,\\ 2. The inference of its models from finite sets of i.i.d. data is responsible for current performance limitations,\\ 3. It is unlikely that increasing dataset sizes will result in significant improvements (at least in traditional i.i.d. setting),\\ 4. It is unlikely that novel statistical estimation methods will result in significant improvements.\\ The current performance wall is mostly a consequence of Zipf's law, and this should be taken into account when designing a statistical machine translation system. A few possible research directions are discussed as a result of this investigation, most notably the integration of linguistic rules into the model inference phase, and the development of active learning procedures. |
| 关 键 词: | 计算分析; 统计数据; 统计机器 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-05-30：张荧(课程编辑志愿者) |
| 阅读次数: | 40 |