| | --- |
| | configs: |
| | - config_name: bm25 |
| | data_files: |
| | - split: ar |
| | path: bm25/ar-* |
| | - split: bn |
| | path: bm25/bn-* |
| | - split: de |
| | path: bm25/de-* |
| | - split: en |
| | path: bm25/en-* |
| | - split: es |
| | path: bm25/es-* |
| | - split: fa |
| | path: bm25/fa-* |
| | - split: fi |
| | path: bm25/fi-* |
| | - split: fr |
| | path: bm25/fr-* |
| | - split: hi |
| | path: bm25/hi-* |
| | - split: id |
| | path: bm25/id-* |
| | - split: ja |
| | path: bm25/ja-* |
| | - split: ko |
| | path: bm25/ko-* |
| | - split: ru |
| | path: bm25/ru-* |
| | - split: sw |
| | path: bm25/sw-* |
| | - split: te |
| | path: bm25/te-* |
| | - split: th |
| | path: bm25/th-* |
| | - split: yo |
| | path: bm25/yo-* |
| | - split: zh |
| | path: bm25/zh-* |
| | - config_name: corpus |
| | data_files: |
| | - split: ar |
| | path: corpus/ar-* |
| | - split: bn |
| | path: corpus/bn-* |
| | - split: de |
| | path: corpus/de-* |
| | - split: en |
| | path: corpus/en-* |
| | - split: es |
| | path: corpus/es-* |
| | - split: fa |
| | path: corpus/fa-* |
| | - split: fi |
| | path: corpus/fi-* |
| | - split: fr |
| | path: corpus/fr-* |
| | - split: hi |
| | path: corpus/hi-* |
| | - split: id |
| | path: corpus/id-* |
| | - split: ja |
| | path: corpus/ja-* |
| | - split: ko |
| | path: corpus/ko-* |
| | - split: ru |
| | path: corpus/ru-* |
| | - split: sw |
| | path: corpus/sw-* |
| | - split: te |
| | path: corpus/te-* |
| | - split: th |
| | path: corpus/th-* |
| | - split: yo |
| | path: corpus/yo-* |
| | - split: zh |
| | path: corpus/zh-* |
| | - config_name: qrels |
| | data_files: |
| | - split: ar |
| | path: qrels/ar-* |
| | - split: bn |
| | path: qrels/bn-* |
| | - split: de |
| | path: qrels/de-* |
| | - split: en |
| | path: qrels/en-* |
| | - split: es |
| | path: qrels/es-* |
| | - split: fa |
| | path: qrels/fa-* |
| | - split: fi |
| | path: qrels/fi-* |
| | - split: fr |
| | path: qrels/fr-* |
| | - split: hi |
| | path: qrels/hi-* |
| | - split: id |
| | path: qrels/id-* |
| | - split: ja |
| | path: qrels/ja-* |
| | - split: ko |
| | path: qrels/ko-* |
| | - split: ru |
| | path: qrels/ru-* |
| | - split: sw |
| | path: qrels/sw-* |
| | - split: te |
| | path: qrels/te-* |
| | - split: th |
| | path: qrels/th-* |
| | - split: yo |
| | path: qrels/yo-* |
| | - split: zh |
| | path: qrels/zh-* |
| | - config_name: queries |
| | data_files: |
| | - split: ar |
| | path: queries/ar-* |
| | - split: bn |
| | path: queries/bn-* |
| | - split: de |
| | path: queries/de-* |
| | - split: en |
| | path: queries/en-* |
| | - split: es |
| | path: queries/es-* |
| | - split: fa |
| | path: queries/fa-* |
| | - split: fi |
| | path: queries/fi-* |
| | - split: fr |
| | path: queries/fr-* |
| | - split: hi |
| | path: queries/hi-* |
| | - split: id |
| | path: queries/id-* |
| | - split: ja |
| | path: queries/ja-* |
| | - split: ko |
| | path: queries/ko-* |
| | - split: ru |
| | path: queries/ru-* |
| | - split: sw |
| | path: queries/sw-* |
| | - split: te |
| | path: queries/te-* |
| | - split: th |
| | path: queries/th-* |
| | - split: yo |
| | path: queries/yo-* |
| | - split: zh |
| | path: queries/zh-* |
| | license: other |
| | dataset_info: |
| | - config_name: bm25 |
| | features: |
| | - name: query-id |
| | dtype: string |
| | - name: corpus-ids |
| | list: string |
| | splits: |
| | - name: ar |
| | num_bytes: 64108 |
| | num_examples: 50 |
| | - name: bn |
| | num_bytes: 59593 |
| | num_examples: 50 |
| | - name: de |
| | num_bytes: 66037 |
| | num_examples: 50 |
| | - name: en |
| | num_bytes: 68425 |
| | num_examples: 50 |
| | - name: es |
| | num_bytes: 65342 |
| | num_examples: 50 |
| | - name: fa |
| | num_bytes: 64110 |
| | num_examples: 50 |
| | - name: fi |
| | num_bytes: 61539 |
| | num_examples: 50 |
| | - name: fr |
| | num_bytes: 66315 |
| | num_examples: 50 |
| | - name: hi |
| | num_bytes: 61116 |
| | num_examples: 50 |
| | - name: id |
| | num_bytes: 62417 |
| | num_examples: 50 |
| | - name: ja |
| | num_bytes: 64423 |
| | num_examples: 50 |
| | - name: ko |
| | num_bytes: 61653 |
| | num_examples: 50 |
| | - name: ru |
| | num_bytes: 65196 |
| | num_examples: 50 |
| | - name: sw |
| | num_bytes: 55926 |
| | num_examples: 50 |
| | - name: te |
| | num_bytes: 59001 |
| | num_examples: 50 |
| | - name: th |
| | num_bytes: 60002 |
| | num_examples: 50 |
| | - name: yo |
| | num_bytes: 55885 |
| | num_examples: 50 |
| | - name: zh |
| | num_bytes: 64621 |
| | num_examples: 50 |
| | download_size: 606080 |
| | dataset_size: 1125709 |
| | - config_name: corpus |
| | features: |
| | - name: _id |
| | dtype: string |
| | - name: text |
| | dtype: string |
| | splits: |
| | - name: ar |
| | num_bytes: 6209693 |
| | num_examples: 10000 |
| | - name: bn |
| | num_bytes: 10663914 |
| | num_examples: 10000 |
| | - name: de |
| | num_bytes: 4513915 |
| | num_examples: 10000 |
| | - name: en |
| | num_bytes: 4427839 |
| | num_examples: 10000 |
| | - name: es |
| | num_bytes: 4436644 |
| | num_examples: 10000 |
| | - name: fa |
| | num_bytes: 5169516 |
| | num_examples: 10000 |
| | - name: fi |
| | num_bytes: 3990049 |
| | num_examples: 10000 |
| | - name: fr |
| | num_bytes: 3817835 |
| | num_examples: 10000 |
| | - name: hi |
| | num_bytes: 9955101 |
| | num_examples: 10000 |
| | - name: id |
| | num_bytes: 3775104 |
| | num_examples: 10000 |
| | - name: ja |
| | num_bytes: 4473484 |
| | num_examples: 10000 |
| | - name: ko |
| | num_bytes: 4377975 |
| | num_examples: 10000 |
| | - name: ru |
| | num_bytes: 6468313 |
| | num_examples: 10000 |
| | - name: sw |
| | num_bytes: 2634380 |
| | num_examples: 10000 |
| | - name: te |
| | num_bytes: 10601667 |
| | num_examples: 10000 |
| | - name: th |
| | num_bytes: 10329258 |
| | num_examples: 10000 |
| | - name: yo |
| | num_bytes: 2208863 |
| | num_examples: 10000 |
| | - name: zh |
| | num_bytes: 3579613 |
| | num_examples: 10000 |
| | download_size: 53886936 |
| | dataset_size: 101633163 |
| | - config_name: qrels |
| | features: |
| | - name: query-id |
| | dtype: string |
| | - name: corpus-id |
| | dtype: string |
| | splits: |
| | - name: ar |
| | num_bytes: 1022 |
| | num_examples: 50 |
| | - name: bn |
| | num_bytes: 938 |
| | num_examples: 50 |
| | - name: de |
| | num_bytes: 1260 |
| | num_examples: 50 |
| | - name: en |
| | num_bytes: 1025 |
| | num_examples: 50 |
| | - name: es |
| | num_bytes: 1261 |
| | num_examples: 50 |
| | - name: fa |
| | num_bytes: 1229 |
| | num_examples: 50 |
| | - name: fi |
| | num_bytes: 971 |
| | num_examples: 50 |
| | - name: fr |
| | num_bytes: 1271 |
| | num_examples: 50 |
| | - name: hi |
| | num_bytes: 1190 |
| | num_examples: 50 |
| | - name: id |
| | num_bytes: 973 |
| | num_examples: 50 |
| | - name: ja |
| | num_bytes: 999 |
| | num_examples: 50 |
| | - name: ko |
| | num_bytes: 937 |
| | num_examples: 50 |
| | - name: ru |
| | num_bytes: 1002 |
| | num_examples: 50 |
| | - name: sw |
| | num_bytes: 918 |
| | num_examples: 50 |
| | - name: te |
| | num_bytes: 943 |
| | num_examples: 50 |
| | - name: th |
| | num_bytes: 958 |
| | num_examples: 50 |
| | - name: yo |
| | num_bytes: 1097 |
| | num_examples: 50 |
| | - name: zh |
| | num_bytes: 1237 |
| | num_examples: 50 |
| | download_size: 39198 |
| | dataset_size: 19231 |
| | - config_name: queries |
| | features: |
| | - name: _id |
| | dtype: string |
| | - name: text |
| | dtype: string |
| | splits: |
| | - name: ar |
| | num_bytes: 3229 |
| | num_examples: 50 |
| | - name: bn |
| | num_bytes: 6915 |
| | num_examples: 50 |
| | - name: de |
| | num_bytes: 3145 |
| | num_examples: 50 |
| | - name: en |
| | num_bytes: 2507 |
| | num_examples: 50 |
| | - name: es |
| | num_bytes: 3309 |
| | num_examples: 50 |
| | - name: fa |
| | num_bytes: 4570 |
| | num_examples: 50 |
| | - name: fi |
| | num_bytes: 2508 |
| | num_examples: 50 |
| | - name: fr |
| | num_bytes: 3127 |
| | num_examples: 50 |
| | - name: hi |
| | num_bytes: 8105 |
| | num_examples: 50 |
| | - name: id |
| | num_bytes: 2505 |
| | num_examples: 50 |
| | - name: ja |
| | num_bytes: 3190 |
| | num_examples: 50 |
| | - name: ko |
| | num_bytes: 2906 |
| | num_examples: 50 |
| | - name: ru |
| | num_bytes: 4585 |
| | num_examples: 50 |
| | - name: sw |
| | num_bytes: 2504 |
| | num_examples: 50 |
| | - name: te |
| | num_bytes: 5670 |
| | num_examples: 50 |
| | - name: th |
| | num_bytes: 6190 |
| | num_examples: 50 |
| | - name: yo |
| | num_bytes: 2811 |
| | num_examples: 50 |
| | - name: zh |
| | num_bytes: 2425 |
| | num_examples: 50 |
| | download_size: 71280 |
| | dataset_size: 70201 |
| | --- |
| | |
| | 🚧 This dataset is currently under construction. Specifications may change. |
| |
|
| |
|
| | # NanoMIRACL (with bm25 subset) |
| |
|
| | A lightweight, evaluation-ready subset of [MIRACL](https://huggingface.co/datasets/miracl/miracl), designed for fast multilingual IR benchmarking. |
| |
|
| | ## What this dataset is |
| |
|
| | - A multilingual IR benchmark with 18 language splits: `ar`, `bn`, `de`, `en`, `es`, `fa`, `fi`, `fr`, `hi`, `id`, `ja`, `ko`, `ru`, `sw`, `te`, `th`, `yo`, `zh`. |
| | - Each split contains 50 queries and a corpus of 10,000 documents. |
| | - Built with deterministic sampling for reproducible benchmarking. |
| |
|
| | ## Data structure |
| |
|
| | - `corpus`: `_id`, `text` |
| | - `queries`: `_id`, `text` |
| | - `qrels`: `query-id`, `corpus-id`, `score` |
| | - `bm25`: `query-id`, `corpus-ids` (A bm25 subset is included for first-stage retrieval and reranking experiments.) |
| |
|
| | ## Performance Comparison Across Models |
| |
|
| |
|
| | | Model | avg | ar | bn | de | en | es | fa | fi | fr | hi | id | ja | ko | ru | sw | te | th | yo | zh | |
| | |---|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:| |
| | | bm25 | 0.5138 | 0.5363 | 0.4760 | 0.4724 | 0.5831 | 0.5582 | 0.4837 | 0.6503 | 0.4241 | 0.5988 | 0.5178 | 0.5569 | 0.4627 | 0.4829 | 0.4472 | 0.5884 | 0.5798 | 0.4664 | 0.3632 | |
| | | e5-small | 0.7181 | 0.7463 | 0.7127 | 0.6579 | 0.6968 | 0.7278 | 0.7203 | 0.7808 | 0.6339 | 0.6612 | 0.6261 | 0.7044 | 0.6730 | 0.7271 | 0.7025 | 0.9779 | 0.8896 | 0.6130 | 0.6737 | |
| | | e5-large | 0.7791 | 0.8186 | 0.7920 | 0.7925 | 0.7386 | 0.8026 | 0.7522 | 0.8347 | 0.6710 | 0.7586 | 0.6229 | 0.7449 | 0.6907 | 0.7927 | 0.7540 | 0.9779 | 0.9174 | 0.8168 | 0.7465 | |
| | | bge-m3 | 0.7873 | 0.8193 | 0.8417 | 0.7337 | 0.7406 | 0.7419 | 0.7733 | 0.7977 | 0.7355 | 0.7402 | 0.6636 | 0.7975 | 0.7266 | 0.7993 | 0.7635 | 0.9926 | 0.9090 | 0.8547 | 0.7402 | |
| |
|
| | ## Subset names |
| |
|
| | - Split names: `ar`, `bn`, `de`, `en`, `es`, `fa`, `fi`, `fr`, `hi`, `id`, `ja`, `ko`, `ru`, `sw`, `te`, `th`, `yo`, `zh` |
| | - Config names: `corpus`, `queries`, `qrels`, `bm25` |
| |
|
| | ## BM25 tokenization strategy |
| |
|
| | - `bm25` was generated with `--auto-select-best-splitter`. |
| | - Candidate strategies: `transformer`, `stemmer`, `wordseg`, `nltk_stem`, `nltk_stem_stop`, `english_regex`, `english_porter`, `english_porter_stop`, `whitespace`. |
| | - Selection metric: best `nDCG@100` per split. |
| |
|
| | Selected strategy by split: |
| |
|
| | | Split | Strategy | Details | |
| | |---|---|---| |
| | | `ar` | `nltk_stem` | NLTK stemmer | |
| | | `bn` | `whitespace` | `str.split()` | |
| | | `de` | `nltk_stem_stop` | NLTK stemmer + stopword removal | |
| | | `en` | `english_regex` | regex tokenization (no stemming) | |
| | | `es` | `nltk_stem` | NLTK stemmer | |
| | | `fa` | `whitespace` | `str.split()` | |
| | | `fi` | `nltk_stem_stop` | NLTK stemmer + stopword removal | |
| | | `fr` | `nltk_stem_stop` | NLTK stemmer + stopword removal | |
| | | `hi` | `stemmer` | PyStemmer (`hindi`) | |
| | | `id` | `transformer` | tokenizer: `Qwen/Qwen3-0.6B` | |
| | | `ja` | `wordseg` | ja (fugashi + unidic-lite) | |
| | | `ko` | `transformer` | tokenizer: `Qwen/Qwen3-0.6B` | |
| | | `ru` | `nltk_stem` | NLTK stemmer | |
| | | `sw` | `whitespace` | `str.split()` | |
| | | `te` | `whitespace` | `str.split()` | |
| | | `th` | `wordseg` | th (pythainlp newmm) | |
| | | `yo` | `transformer` | tokenizer: `Qwen/Qwen3-0.6B` | |
| | | `zh` | `transformer` | tokenizer: `Qwen/Qwen3-0.6B` | |
| |
|
| | ## Upstream source |
| |
|
| | - Original dataset: [MIRACL](https://huggingface.co/datasets/miracl/miracl) |
| | - Base processed source: [hotchpotch/miracl-hf-unified](https://huggingface.co/datasets/hotchpotch/miracl-hf-unified) |
| |
|
| | ## License |
| |
|
| | Other. This dataset is derived from MIRACL and follows upstream licensing and attribution requirements. |
