Follow the instructions

Today, I follow the instructions as the meeting.

Summary:

First, I predict 4 real con and 4 imaginary con together with 19 inputs. The results of 4 imaginary con are still not good, which are converted from real permittivity.
The reason may be that the conversion is just multiplying some parameters. So there will be little help to improve the prediction.
The first figure is 4 real con prediction performance. The R2 of the testing data are 0.76, 0.83, 0.63, 0.77, which are as good as before.

 The second figure is 4 imaginary con prediction performance. The R2 of the testing data are 0.14, 0.17, 0.29, 0.54, which are as bad as before.

In conclusion, the conversion from real permittivity to imaginary conductivity may be little help for improving the prediction performance.

Second is to predict them with just 11 inputs.
The first figure is 4 real con prediction performance. The R2 of the testing data are 0.75, 0.74, 0.73, 0.74.

  The second figure is 4 imaginary con prediction performance. The R2 of the testing data are 0.05, 0.16, 0.42, 0.52.

In conclusion, the deletion of 8 inputs make the prediction of 4 real con more stable and increase the prediction of 4 imaginary con a little. Generally, 11 inputs are similar to 19 inputs in prediction performance. Actually, more inputs will not decrease the prediction performance. However, we can use just 11 inputs to predict 8 con since 19 inputs do not perform much better.

Third, I check different lithologies step by step. For now, there are 10 different lithologies before division, category from 2 to 11.

1. I check the performance by selecting category from 4 to 10.
The first  is 4 real con prediction performance. The R2 of the testing data are 0.68, 0.58, 0.62, 0.66.
The second  is 4 imaginary con prediction performance. The R2 of the testing data are 0.13, 0.15, 0.32, 0.39.
So the performance is worse.

Tomorrow, I will continue to check lithologies. After that I will continue the instructions with magnitude and tan and NMR. Also, the change of training function may be a choice.