图 书 馆
确定好的关系提取模式Identifying Good Patterns for Relation Extraction |
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| 课程网址: | http://videolectures.net/is2012_starc_relation_extraction/ |
| 主讲教师: | Janez Starc |
| 开课单位: | 约瑟夫·斯特凡学院 |
| 开课时间: | 2012-11-16 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | In pattern based relation extraction, patterns that with high precision and recall produce semantically useful relations are preferred. We present a technique similar to n-gram extraction that extracts patterns from large text corpora and calculates statistics, like frequency, minimal token frequency and normalized expectation, which guide to preferred patterns. Patterns have named-instances and/or one variable length gap as arguments. We extracted patterns from a large news corpus and translated them to Cyc relations. We focused on four patterns, which we evaluate by asserting their translated relations to Cyc knowledge base. |
| 关 键 词: | 文本语料库; 文本语料库; 翻译关系 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-07-29：yumf |
| 阅读次数: | 44 |