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从数据中查找频繁模式Finding frequent patterns from data |
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| 课程网址: | http://videolectures.net/aop05_mannila_ffpd/ |
| 主讲教师: | Heikki Mannila |
| 开课单位: | 赫尔辛基大学 |
| 开课时间: | 2007-02-25 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Discovery of frequent patterns = finding positive conjunctions that are true for a given fraction of the observations - this basic idea can be instantiated in many ways: - finding frequent sets from 0/1 data (association mining) - finding frequent episodes in sequences - finding frequent subgraphs in graphs etc. - efficient algorithms exist -- the levelwise approach - theoretical analysis of the algorithms is not trivial - leads to connections to hypergraph transversals etc. - the second part: how can the patterns be used? - sometimes interesting in themselves - can be used to approximate the joint distribution - maximum entropy approaches - combining information from several patterns - ordering patterns |
| 关 键 词: | 计算机科学; 机器学习; 模式识别 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-07-06：heyf |
| 阅读次数: | 31 |