Added Stratified Sampling instead of Monte Carlo Sampling

[rashidrao-pk]

Using Stratified Sampling to Improve LIME Image Explanations

• This repository contains the changes needed to add the stratified sampling strategy to the original codebase of LIME proposed for the Research Article 'Using Stratified Sampling to Improve LIME Image Explanations'. published at Proceedings of the AAAI Conference on Artificial Intelligence.

• The rest of Experiments for the proposed strategy are uploaded here at LIME Stratified Examples