图 书 馆
结构基因选择的快速算法A fast algorithm for structured gene selection |
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| 课程网址: | http://videolectures.net/mlsb2010_mosci_afa/ |
| 主讲教师: | Sofi a Mosci |
| 开课单位: | 热那亚大学 |
| 开课时间: | 2010-11-08 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We deal with the problem of gene selection when genes must be selected group-wise, where the groups, defined a priori and representing functional families, may overlap. We propose a new optimization procedure for solving the regularization problem proposed in [4], where the group lasso penalty is generalized to overlapping groups. While in [4] the proposed implementation requires replication of genes belonging to more than one group, our iterative procedure, provides a scalable alternative with no need for data duplication. This scalability property allows avoiding the otherwise necessary pre-processing for dimensionality reduction, which is at risk of discarding relevant biological information, and leads to improved prediction performances and higher selection stability. |
| 关 键 词: | 基因选择; 正则化问题; 维度降低 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2019-07-02：cwx |
| 阅读次数: | 85 |