Update README.md

README.md

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 *Heatmaps visualize key decision regions for each sample.*
 
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 ## Visualizations 
 
 Here are key visualizations from the training and evaluation process, including loss curves, accuracy plots, and Grad-CAM++ overlays that illustrate what the model focuses on.
 
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 ### 🎯 Accuracy & F1 Score per Epoch
 Visualizing training and validation accuracy alongside macro F1 score.