Update README.md

README.md

@@ -33,3 +33,38 @@ configs:
   - split: test
     path: data/test-*
 ---
+
+## Emotion Dataset
+This is the dataset for a sentiment analysis task. This dataset is cloned from [dair-ai/emotion](https://huggingface.co/datasets/dair-ai/emotion) with the following adaptations.
+
+The original train dataset does not have a good balance of label distribution.
+
+```
+label_name
+surprise     719
+love        1641
+fear        2373
+anger       2709
+sadness     5797
+joy         6761
+```
+
+
+I created a balanced subset from the original dataset with the following processing steps:
+
+- Selected the four highest number labels: fear (2373), anger (2709), sadness (5797), joy (6761)
+- Down-sampled the majority classes to match the minority class and reordered the label ids
+```
+label  label_name
+0      sadness       2373
+1      joy           2373
+2      anger         2373
+3      fear          2373
+```
+- Split the downsampled dataframe into train, validation, and test subsets with the ratio 70:15:15. Finally, we obtained:
+```
+train_ds: 6644
+validation_ds: 1424
+test_ds: 1424
+```
+- Added ClassLabel to all Dataset objects for the 'train', 'validation', and 'test' datasets