---
language:
- bn
tags:
- translation
- mbart-50
- santali
- sanlish
license: apache-2.0
base_model: facebook/mbart-large-50-many-to-many-mmt
---

# mbart_coded_sanlish

Fine-tuned `facebook/mbart-large-50-many-to-many-mmt` for **coded-Sanlish → Bangla** translation,
part of the Santali Speech-to-Bangla-Text thesis pipeline.

- **Source column:** `coded_sanlish` (tagged as `en_XX`, a Latin-script placeholder)
- **Target column:** `Bangla` (tagged as `bn_IN`)
- **Status:** training complete — this is the best checkpoint

## Training arguments used

| Argument | Value |
|---|---|
| `evaluation_strategy` | `epoch` |
| `save_strategy` | `epoch` |
| `logging_steps` | `20` |
| `learning_rate` | `0.0003` |
| `weight_decay` | `0.01` |
| `warmup_ratio` | `0.1` |
| `per_device_train_batch_size` | `8` |
| `per_device_eval_batch_size` | `8` |
| `gradient_accumulation_steps` | `2` |
| `num_train_epochs` | `8` |
| `predict_with_generate` | `True` |
| `fp16` | `True` |
| `load_best_model_at_end` | `True` |
| `metric_for_best_model` | `eval_loss` |
| `greater_is_better` | `False` |
| `save_total_limit` | `2` |


## Final results (best checkpoint, by `eval_loss`)

| Metric | Value |
|---|---|
| eval_loss | 2.631115674972534 |
| BLEU | 7.6122363636138815 |
| chrF++ | 25.5530785618982 |