Challenging issues in classification problems : sparisty control, key instance detection, and imbalanced data

• 主要作者: Liu, Guoqing.
• 其他作者: School of Computer Engineering
• 格式: Theses and Dissertations
• 語言: English
• 出版: 2013
• 主題: DRNTU::Engineering::Computer science and engineering::Computer applications::Computers in other systems
• 在線閱讀: http://hdl.handle.net/10356/52422

This thesis deals with the difficulties in classification problems caused by three types of sparsity characteristics - feature, label, and instance sparsity. First, feature spar- sity is usually used as prior knowledge by inducing parameter sparsity of the learned model. We show that only an appropr...