随笔分类 -  Metric Learning

摘要：我看的是Liu Yang的survey: Distance Metric Learning: A Comprehensive Survey.里面总结道，Eric Xing等把Metric Learning formulate成这样一个凸优化问题：\begin{align}\min\limits_{A \in \mathbb{R}^{m \times m}} & \sum\limits_{({x_i},{x_j}) \in \mathcal{S}} {\left\| {{x_i} - {x_j}} \right\|_A^2}\\\text{s.t.} \quad & A\succ 阅读全文