How to get a convex curve for weights versus loss in a neural network

Question

In most literature on neural networks, a 3D graph of weights, displacements, and loss functions is shown below. When I tried, I got a plot like this

Here is more detailed information. Here is a glimpse of the data set, there are 15,000 case studies,

Here is the formula for the cost function used,

Here is a link to ipython notebook with code and visualization.

I want to get a curve like the one shown in the first image for demonstration purposes.

Answer 1

, :

w () x b y - z.

w b - w, b

x, y, z 3D. .