Update README.md

README.md

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 license: cc-by-4.0
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+# crosloengual-bert-si-nli
+
+CroSloEngual BERT model finetuned on the SI-NLI dataset for Slovene natural language inference.  
+Fine-tuned in a classic sequence pair classification setting on the official training/validation/test split for 10 epochs, using validation set accuracy for model selection.
+Optimized using the AdamW optimizer (learning rate 2e-5) and cross-entropy loss.  
+Using batch size `82` (selected based on the available GPU memory) and maximum sequence length `107` (99th percentile of the lengths in the training set).
+
+Achieves the following metrics:  
+- best validation accuracy: `0.660`
+- test accuracy = `0.673`