add more inputs to get a better performance of the model

Today, I add more inputs to predict dielectric data. The performance is a little better than before.

Summary:

I add QElan data and water saturation data because I think they are related to permittivity. Also, I delete some outliers so that all data are more concentrated. But there is still a gap of accuracy between conductivity and permittivity data.
Although there is an improvement in prediction performance of the model, it is not much compared with previous', just about 2-3 percent.

The following are the prediction results of 4 conductivity data.

The following are the prediction results of 4 permittivity data.

Tomorrow, I will continue to think if I can improve the prediction accuracy of dielectric data, especially permittivity data.