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README.md

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-Transcript isoform expression dataset curated following the preprocessing pipeline in the IsoFormer paper
+Transcript isoform expression dataset curated following the preprocessing pipeline in the IsoFormer paper
+
+* training set: `train_i.tsv`, where i=1,...19 denotes chromosome i.
+* validation set: `validation.tsv`, corresponds to chromosome 20.
+* test set: `test.tsv`, corresponds to chromosome 21-22.