add model card

README.md

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+
+---
+language:
+- vi
+- ede
+
+tags:
+- splade
+- morpheme-tokenizer
+- sparse-retrieval
+- cross-lingual-retrieval
+- information-retrieval
+- EViRAL
+---
+
+# SPLADE + Morpheme Tokenizer — EViRAL
+
+Cross-lingual retrieval model:
+
+Ede query → Vietnamese passage retrieval
+
+## Architecture
+
+- Backbone: 6-layer Transformer
+- Retrieval head: SPLADE sparse expansion
+- Tokenizer: Morpheme tokenizer v4
+
+## Files
+
+| File | Description |
+|---|---|
+| mlm.pt | MLM pre-trained encoder |
+| align.pt | Cross-lingual aligned encoder |
+| finetune.pt | Fine-tuned retrieval encoder |
+
+## Notes
+
+This model replaces vanilla dense retrieval
+with SPLADE sparse lexical expansion while
+keeping the same Transformer backbone.