1)EDA of pneumothorax.ipynb, Visualizing x-rays using heatmaps.ipynb, deep dive into Dicom dataset.ipynb: are complete Jupyter Notebooks with explanation of the dataset and Exploratory data analysis. 2)fast.ai initial model.ipynb- an initial model for creating a baseline result, U-net with efficientnet encoder.ipynb- Nested U-net with Dfferential Learning rates and Progeressive resizing.