3.20.2 Greatest hits from previous weeks

3.20.2.1 How can Mathematica be used to create images like these?

http://mathematica.stackexchange.com/questions/118992/how-can-mathematica-be-used-to-create-images-like-these

 
Here are two examples of artistic image interpolation using just black lines: 
 
 
TRIANGULATION: ANGULAR CELEBRITIES DRAWN WITH A PEN 
Interpolation for Triangulation-represented Digital Image 
 
 
The  ...
 

- asked by R Hall (28 votes), answered by MarcoB (29 votes)

3.20.2.2 How do you make a Neural Net?

http://mathematica.stackexchange.com/questions/123458/how-do-you-make-a-neural-net

 
In the new Mathematica release (v11), NeuralNetworks is one of the new main features. However, the documentation isn't that clear on what function should be used in a Net. 
 
The documentation on  ...
 

- asked by JHM (22 votes), answered by Searke (24 votes)