图 书 馆
一种简单、直观的语素归纳方法A Simpler, Intuitive Approach to Morpheme Induction |
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| 课程网址: | http://videolectures.net/pcw06_keshava_siami/ |
| 主讲教师: | Samarth Keshava; Emily Pitler |
| 开课单位: | 耶鲁大学 |
| 开课时间: | 2007-02-25 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We present a simple, psychologically plausible algorithm to perform unsupervised learning of morphemes. The algorithm is most suited to Indo-European languages with a concatenative morphology, and in particular English. We will describe the two approaches that work together to detect morphemes: 1) finding words that appear as substrings of other words, and 2) detecting changes in transitional probabilities. This algorithm yields particularly good results given its simplicity and conciseness: evaluated on a set of 532 human-segmented English words, the 252-line program achieved an F-score of 80.92% (Precision: 82.84% Recall: 79.10%). |
| 关 键 词: | 心理算法; 无监督学习; 过渡概率 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-11-28：lxf |
| 阅读次数: | 33 |