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

• المؤلف الرئيسي: Liu, Guoqing.
• مؤلفون آخرون: School of Computer Engineering
• التنسيق: Theses and Dissertations
• اللغة: English
• منشور في: 2013
• الموضوعات: DRNTU::Engineering::Computer science and engineering::Computer applications::Computers in other systems
• الوصول للمادة أونلاين: 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...