@Artical{Zhang2020,<br>
  author    = {Zhang, Xiao and Wu, Dongrui and Xiong, Haoyi and Dai, Bo},<br>
  title     = {Optimization Variance: Exploring Generalization Properties of DNNs},<br>
  year      = {2020},<br>
  note     = Work in Progress,<br>
}