图 书 馆
稳定准确的特征选择Stable and Accurate Feature Selection |
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| 课程网址: | http://videolectures.net/ecmlpkdd09_cataltepe_safs/ |
| 主讲教师: | Zehra Cataltepe |
| 开课单位: | 伊斯坦布尔技术大学 |
| 开课时间: | 2009-10-20 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | In addition to accuracy, stability is also a measure of success for a feature selection algorithm. Stability could especially be a concern when the number of samples in a data set is small and the dimensionality is high. In this study, we introduce a stability measure, and perform both accuracy and stability measurements of MRMR (Minimum Redundancy Maximum Relevance) feature selection algorithm on different data sets. The two feature evaluation criteria used by MRMR, MID (Mutual Information Difference) and $MIQ$ (Mutual Information Quotient), result in similar accuracies, but MID is more stable. We also introduce a new feature selection criterion, MIDalpha, where redundancy and relevance of selected features are controlled by parameter alpha. |
| 关 键 词: | 准确性; 稳定性; 算法成功 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-03-24：cwx |
| 阅读次数: | 50 |