delete some depths and get better results

Today, I delete some depths and get better results.

Summary:

There are 11 depths in target depths. After looking at IP plots, I decide to delete the first 3 and last 1 depths. The first depth is very thick and not quite important. T fourth to the tenth is comparatively important than others. So I decide to use the middle 7 kind of depths.

The following are performance without categories. The median R2 is about 0.25 and median R is about 0.5.

The following are performance with categories. The median R2 is about 0.65 and median R is about 0.8.

 They are much better than before.

Tomorrow, I will continue to see if there are other methods to improve the performance of the ANN model prediction.