Gradient estimates

The gradient estimate at each iteration. This data set is saved as a CSV file with name Gradient_estimates_CURRENT_INSTANCE_NAME if SAVE_OUTPUT=True in a folder named according to INSTANCE_OUTPUT_DIRECTORY. The ith row represents the gradient estimates of the ith iteration. Note that the matrices have been flattened to a row so that the output is 2D instead of 3D. This means that, for example, the first row of a 3x3 matrix is represented by columns 0-2, the second row by columns 3-5 and the third row by columns 6-8, see the example below.

Example gradient estimate data set.

0	1	2	3	4	5	6	7	8
0.11	0.0	-0.11	0.11	0.11	0.11	0.0	0.0	0.11
0.012	0.0	-0.012	0.012	-0.012	0.012	0.0	0.0	0.012

This data set can be reshaped so that a matrix is obtained at each iteration. For example, the matrix at the second iteration is as follows:

The gradient estimate matrix at the second iteration.

0	1	2
0.012	0.0	-0.012
0.012	-0.012	0.012
0.0	0.0	0.012