2 posts tagged with "梯度下降"

概念​

Critical Points​

• Local minima
• Local maxima
• Saddle point (马鞍)

基本概念​

• Linear model($b + wx$)
• Sigmoid $[ y = b + \sum_i c_i \, \text{sigmoid} \left( b_i + \sum_j w_{ij}x_j \right) ]$