Yongbin Choi

Fix typos in LLARA

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fix typo : normlized -> normalized

[i18n-ko] Translated `vector_search_with_hub_as_backend.ipynb` to Korean

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# What does this PR do? Translated the `vector_search_with_hub_as_backend.ipynb` file to Korean. ## Who can review? Hello, @merveenoyan ! Could you please review my PR when you have a chance?...

refactor: split `BRIGHT` benchmark into individual subset tasks

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Close #3268 This pull request adds new BRIGHT subset benchmarks and their corresponding descriptive statistics to the retrieval benchmark suite. These changes enable more granular, domain-specific evaluation for reasoning-intensive retrieval...

Add hyperparameters (k1, b) support to BM25 implementation

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The current BM25 implementation in `mteb/models/model_implementations/bm25.py` doesn't support hyperparameter tuning for `k1` and `b` parameters. It seems that only the default settings are being used at line 65. https://github.com/embeddings-benchmark/mteb/blob/16ae6ff9cdc44cb1e2ce9dfa73155ec50cf77dd3/mteb/models/model_implementations/bm25.py#L45-L67 I...