Datasets:

hakari-bench
/

NanoMTEB-Polish

configs:
  - config_name: corpus
    data_files:
      - split: cqadupstack_android
        path: corpus/cqadupstack_android-00000-of-00001.parquet
      - split: cqadupstack_english
        path: corpus/cqadupstack_english-00000-of-00001.parquet
      - split: cqadupstack_gis
        path: corpus/cqadupstack_gis-00000-of-00001.parquet
      - split: cqadupstack_mathematica
        path: corpus/cqadupstack_mathematica-00000-of-00001.parquet
      - split: cqadupstack_physics
        path: corpus/cqadupstack_physics-00000-of-00001.parquet
      - split: cqadupstack_programmers
        path: corpus/cqadupstack_programmers-00000-of-00001.parquet
      - split: cqadupstack_stats
        path: corpus/cqadupstack_stats-00000-of-00001.parquet
      - split: cqadupstack_tex
        path: corpus/cqadupstack_tex-00000-of-00001.parquet
      - split: cqadupstack_webmasters
        path: corpus/cqadupstack_webmasters-00000-of-00001.parquet
      - split: cqadupstack_wordpress
        path: corpus/cqadupstack_wordpress-00000-of-00001.parquet
      - split: fiqa
        path: corpus/fiqa-00000-of-00001.parquet
      - split: nq
        path: corpus/nq-00000-of-00001.parquet
      - split: pugg
        path: corpus/pugg-00000-of-00001.parquet
      - split: quora
        path: corpus/quora-00000-of-00001.parquet
  - config_name: queries
    data_files:
      - split: cqadupstack_android
        path: queries/cqadupstack_android-00000-of-00001.parquet
      - split: cqadupstack_english
        path: queries/cqadupstack_english-00000-of-00001.parquet
      - split: cqadupstack_gis
        path: queries/cqadupstack_gis-00000-of-00001.parquet
      - split: cqadupstack_mathematica
        path: queries/cqadupstack_mathematica-00000-of-00001.parquet
      - split: cqadupstack_physics
        path: queries/cqadupstack_physics-00000-of-00001.parquet
      - split: cqadupstack_programmers
        path: queries/cqadupstack_programmers-00000-of-00001.parquet
      - split: cqadupstack_stats
        path: queries/cqadupstack_stats-00000-of-00001.parquet
      - split: cqadupstack_tex
        path: queries/cqadupstack_tex-00000-of-00001.parquet
      - split: cqadupstack_webmasters
        path: queries/cqadupstack_webmasters-00000-of-00001.parquet
      - split: cqadupstack_wordpress
        path: queries/cqadupstack_wordpress-00000-of-00001.parquet
      - split: fiqa
        path: queries/fiqa-00000-of-00001.parquet
      - split: nq
        path: queries/nq-00000-of-00001.parquet
      - split: pugg
        path: queries/pugg-00000-of-00001.parquet
      - split: quora
        path: queries/quora-00000-of-00001.parquet
    default: true
  - config_name: qrels
    data_files:
      - split: cqadupstack_android
        path: qrels/cqadupstack_android-00000-of-00001.parquet
      - split: cqadupstack_english
        path: qrels/cqadupstack_english-00000-of-00001.parquet
      - split: cqadupstack_gis
        path: qrels/cqadupstack_gis-00000-of-00001.parquet
      - split: cqadupstack_mathematica
        path: qrels/cqadupstack_mathematica-00000-of-00001.parquet
      - split: cqadupstack_physics
        path: qrels/cqadupstack_physics-00000-of-00001.parquet
      - split: cqadupstack_programmers
        path: qrels/cqadupstack_programmers-00000-of-00001.parquet
      - split: cqadupstack_stats
        path: qrels/cqadupstack_stats-00000-of-00001.parquet
      - split: cqadupstack_tex
        path: qrels/cqadupstack_tex-00000-of-00001.parquet
      - split: cqadupstack_webmasters
        path: qrels/cqadupstack_webmasters-00000-of-00001.parquet
      - split: cqadupstack_wordpress
        path: qrels/cqadupstack_wordpress-00000-of-00001.parquet
      - split: fiqa
        path: qrels/fiqa-00000-of-00001.parquet
      - split: nq
        path: qrels/nq-00000-of-00001.parquet
      - split: pugg
        path: qrels/pugg-00000-of-00001.parquet
      - split: quora
        path: qrels/quora-00000-of-00001.parquet
  - config_name: bm25
    data_files:
      - split: cqadupstack_android
        path: bm25/cqadupstack_android-00000-of-00001.parquet
      - split: cqadupstack_english
        path: bm25/cqadupstack_english-00000-of-00001.parquet
      - split: cqadupstack_gis
        path: bm25/cqadupstack_gis-00000-of-00001.parquet
      - split: cqadupstack_mathematica
        path: bm25/cqadupstack_mathematica-00000-of-00001.parquet
      - split: cqadupstack_physics
        path: bm25/cqadupstack_physics-00000-of-00001.parquet
      - split: cqadupstack_programmers
        path: bm25/cqadupstack_programmers-00000-of-00001.parquet
      - split: cqadupstack_stats
        path: bm25/cqadupstack_stats-00000-of-00001.parquet
      - split: cqadupstack_tex
        path: bm25/cqadupstack_tex-00000-of-00001.parquet
      - split: cqadupstack_webmasters
        path: bm25/cqadupstack_webmasters-00000-of-00001.parquet
      - split: cqadupstack_wordpress
        path: bm25/cqadupstack_wordpress-00000-of-00001.parquet
      - split: fiqa
        path: bm25/fiqa-00000-of-00001.parquet
      - split: nq
        path: bm25/nq-00000-of-00001.parquet
      - split: pugg
        path: bm25/pugg-00000-of-00001.parquet
      - split: quora
        path: bm25/quora-00000-of-00001.parquet
  - config_name: harrier_oss_v1_270m
    data_files:
      - split: cqadupstack_android
        path: harrier_oss_v1_270m/cqadupstack_android-00000-of-00001.parquet
      - split: cqadupstack_english
        path: harrier_oss_v1_270m/cqadupstack_english-00000-of-00001.parquet
      - split: cqadupstack_gis
        path: harrier_oss_v1_270m/cqadupstack_gis-00000-of-00001.parquet
      - split: cqadupstack_mathematica
        path: harrier_oss_v1_270m/cqadupstack_mathematica-00000-of-00001.parquet
      - split: cqadupstack_physics
        path: harrier_oss_v1_270m/cqadupstack_physics-00000-of-00001.parquet
      - split: cqadupstack_programmers
        path: harrier_oss_v1_270m/cqadupstack_programmers-00000-of-00001.parquet
      - split: cqadupstack_stats
        path: harrier_oss_v1_270m/cqadupstack_stats-00000-of-00001.parquet
      - split: cqadupstack_tex
        path: harrier_oss_v1_270m/cqadupstack_tex-00000-of-00001.parquet
      - split: cqadupstack_webmasters
        path: harrier_oss_v1_270m/cqadupstack_webmasters-00000-of-00001.parquet
      - split: cqadupstack_wordpress
        path: harrier_oss_v1_270m/cqadupstack_wordpress-00000-of-00001.parquet
      - split: fiqa
        path: harrier_oss_v1_270m/fiqa-00000-of-00001.parquet
      - split: nq
        path: harrier_oss_v1_270m/nq-00000-of-00001.parquet
      - split: pugg
        path: harrier_oss_v1_270m/pugg-00000-of-00001.parquet
      - split: quora
        path: harrier_oss_v1_270m/quora-00000-of-00001.parquet
  - config_name: reranking_hybrid
    data_files:
      - split: cqadupstack_android
        path: reranking_hybrid/cqadupstack_android-00000-of-00001.parquet
      - split: cqadupstack_english
        path: reranking_hybrid/cqadupstack_english-00000-of-00001.parquet
      - split: cqadupstack_gis
        path: reranking_hybrid/cqadupstack_gis-00000-of-00001.parquet
      - split: cqadupstack_mathematica
        path: reranking_hybrid/cqadupstack_mathematica-00000-of-00001.parquet
      - split: cqadupstack_physics
        path: reranking_hybrid/cqadupstack_physics-00000-of-00001.parquet
      - split: cqadupstack_programmers
        path: reranking_hybrid/cqadupstack_programmers-00000-of-00001.parquet
      - split: cqadupstack_stats
        path: reranking_hybrid/cqadupstack_stats-00000-of-00001.parquet
      - split: cqadupstack_tex
        path: reranking_hybrid/cqadupstack_tex-00000-of-00001.parquet
      - split: cqadupstack_webmasters
        path: reranking_hybrid/cqadupstack_webmasters-00000-of-00001.parquet
      - split: cqadupstack_wordpress
        path: reranking_hybrid/cqadupstack_wordpress-00000-of-00001.parquet
      - split: fiqa
        path: reranking_hybrid/fiqa-00000-of-00001.parquet
      - split: nq
        path: reranking_hybrid/nq-00000-of-00001.parquet
      - split: pugg
        path: reranking_hybrid/pugg-00000-of-00001.parquet
      - split: quora
        path: reranking_hybrid/quora-00000-of-00001.parquet
tags:
  - information-retrieval
  - retrieval
  - nano
  - bm25
  - hakari-bench
  - dense-retrieval
  - reranking
dataset_info:
  - config_name: bm25
    features:
      - name: query-id
        dtype: string
      - name: corpus-ids
        list: string
    splits:
      - name: cqadupstack_android
        num_bytes: 889250
        num_examples: 200
      - name: cqadupstack_english
        num_bytes: 942180
        num_examples: 200
      - name: cqadupstack_gis
        num_bytes: 908062
        num_examples: 200
      - name: cqadupstack_mathematica
        num_bytes: 885093
        num_examples: 200
      - name: cqadupstack_physics
        num_bytes: 921380
        num_examples: 200
      - name: cqadupstack_programmers
        num_bytes: 972735
        num_examples: 200
      - name: cqadupstack_stats
        num_bytes: 911380
        num_examples: 200
      - name: cqadupstack_tex
        num_bytes: 948964
        num_examples: 200
      - name: cqadupstack_webmasters
        num_bytes: 887493
        num_examples: 200
      - name: cqadupstack_wordpress
        num_bytes: 938060
        num_examples: 200
      - name: fiqa
        num_bytes: 898683
        num_examples: 200
      - name: nq
        num_bytes: 1179217
        num_examples: 200
      - name: pugg
        num_bytes: 1266952
        num_examples: 200
      - name: quora
        num_bytes: 865057
        num_examples: 200
    download_size: 13432035
    dataset_size: 13414506
  - config_name: corpus
    features:
      - name: _id
        dtype: string
      - name: text
        dtype: string
    splits:
      - name: cqadupstack_android
        num_bytes: 6738774
        num_examples: 10000
      - name: cqadupstack_english
        num_bytes: 5414440
        num_examples: 10000
      - name: cqadupstack_gis
        num_bytes: 10214356
        num_examples: 10000
      - name: cqadupstack_mathematica
        num_bytes: 11471754
        num_examples: 10000
      - name: cqadupstack_physics
        num_bytes: 8748780
        num_examples: 10000
      - name: cqadupstack_programmers
        num_bytes: 11495664
        num_examples: 10000
      - name: cqadupstack_stats
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        num_examples: 10000
      - name: cqadupstack_tex
        num_bytes: 11609922
        num_examples: 10000
      - name: cqadupstack_webmasters
        num_bytes: 7908919
        num_examples: 10000
      - name: cqadupstack_wordpress
        num_bytes: 10940072
        num_examples: 10000
      - name: fiqa
        num_bytes: 8733332
        num_examples: 10000
      - name: nq
        num_bytes: 6672901
        num_examples: 10000
      - name: pugg
        num_bytes: 9164421
        num_examples: 10000
      - name: quora
        num_bytes: 809676
        num_examples: 10000
    download_size: 72681263
    dataset_size: 120745407
  - config_name: harrier_oss_v1_270m
    features:
      - name: query-id
        dtype: string
      - name: corpus-ids
        list: string
    splits:
      - name: cqadupstack_android
        num_bytes: 888429
        num_examples: 200
      - name: cqadupstack_english
        num_bytes: 945540
        num_examples: 200
      - name: cqadupstack_gis
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        num_examples: 200
      - name: cqadupstack_mathematica
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        num_examples: 200
      - name: cqadupstack_physics
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        num_examples: 200
      - name: cqadupstack_programmers
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        num_examples: 200
      - name: cqadupstack_stats
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        num_examples: 200
      - name: cqadupstack_tex
        num_bytes: 954986
        num_examples: 200
      - name: cqadupstack_webmasters
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        num_examples: 200
      - name: cqadupstack_wordpress
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        num_examples: 200
      - name: fiqa
        num_bytes: 900649
        num_examples: 200
      - name: nq
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        num_examples: 200
      - name: pugg
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        num_examples: 200
      - name: quora
        num_bytes: 865777
        num_examples: 200
    download_size: 13441719
    dataset_size: 13424098
  - config_name: qrels
    features:
      - name: query-id
        dtype: string
      - name: corpus-id
        dtype: string
    splits:
      - name: cqadupstack_android
        num_bytes: 14206
        num_examples: 809
      - name: cqadupstack_english
        num_bytes: 25424
        num_examples: 1356
      - name: cqadupstack_gis
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        num_examples: 313
      - name: cqadupstack_mathematica
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        num_examples: 506
      - name: cqadupstack_physics
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        num_examples: 621
      - name: cqadupstack_programmers
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        num_examples: 634
      - name: cqadupstack_stats
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        num_examples: 373
      - name: cqadupstack_tex
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        num_examples: 843
      - name: cqadupstack_webmasters
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        num_examples: 882
      - name: cqadupstack_wordpress
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        num_examples: 344
      - name: fiqa
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        num_examples: 534
      - name: nq
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        num_examples: 251
      - name: pugg
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        num_examples: 200
      - name: quora
        num_bytes: 8745
        num_examples: 485
    download_size: 98932
    dataset_size: 150398
  - config_name: queries
    features:
      - name: _id
        dtype: string
      - name: text
        dtype: string
    splits:
      - name: cqadupstack_android
        num_bytes: 15038
        num_examples: 200
      - name: cqadupstack_english
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        num_examples: 200
      - name: cqadupstack_gis
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        num_examples: 200
      - name: cqadupstack_mathematica
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        num_examples: 200
      - name: cqadupstack_physics
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        num_examples: 200
      - name: cqadupstack_programmers
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        num_examples: 200
      - name: cqadupstack_stats
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        num_examples: 200
      - name: cqadupstack_tex
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        num_examples: 200
      - name: cqadupstack_webmasters
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        num_examples: 200
      - name: cqadupstack_wordpress
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        num_examples: 200
      - name: fiqa
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        num_examples: 200
      - name: nq
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        num_examples: 200
      - name: pugg
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        num_examples: 200
      - name: quora
        num_bytes: 13629
        num_examples: 200
    download_size: 161842
    dataset_size: 199787
  - config_name: reranking_hybrid
    features:
      - name: query-id
        dtype: string
      - name: corpus-ids
        list: string
    splits:
      - name: cqadupstack_android
        num_bytes: 179852
        num_examples: 200
      - name: cqadupstack_english
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        num_examples: 200
      - name: cqadupstack_gis
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        num_examples: 200
      - name: cqadupstack_mathematica
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        num_examples: 200
      - name: cqadupstack_physics
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        num_examples: 200
      - name: cqadupstack_programmers
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        num_examples: 200
      - name: cqadupstack_stats
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        num_examples: 200
      - name: cqadupstack_tex
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        num_examples: 200
      - name: cqadupstack_webmasters
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        num_examples: 200
      - name: cqadupstack_wordpress
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        num_examples: 200
      - name: fiqa
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        num_examples: 200
      - name: nq
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        num_examples: 200
      - name: pugg
        num_bytes: 255705
        num_examples: 200
      - name: quora
        num_bytes: 175238
        num_examples: 200
    download_size: 2731254
    dataset_size: 2714843

NanoMTEB-Polish

This dataset is a Nano-style retrieval dataset for HAKARI-bench.

NanoMTEB-Polish is a compact Polish retrieval benchmark assembled from Polish MTEB-family retrieval tasks. It includes Polish CQADupStack domains, FiQA, Natural Questions, PUGG information retrieval, and Quora-style duplicate-question retrieval.

Usage

from datasets import load_dataset

dataset_id = "hakari-bench/NanoMTEB-Polish"
split = "cqadupstack_android"

queries = load_dataset(dataset_id, "queries", split=split)
corpus = load_dataset(dataset_id, "corpus", split=split)
qrels = load_dataset(dataset_id, "qrels", split=split)
reranking_candidates = load_dataset(dataset_id, "reranking_hybrid", split=split)

Data Layout

This dataset uses six Hugging Face Datasets configs:

corpus: documents with _id and text
queries: queries with _id and text
qrels: positive relevance labels with query-id and corpus-id
bm25: BM25 candidate lists with query-id and corpus-ids
harrier_oss_v1_270m: dense candidate lists from microsoft/harrier-oss-v1-270m
reranking_hybrid: RRF candidate lists built from bm25 and harrier_oss_v1_270m

Each config has the same Nano split names.

Candidate Construction

bm25: local BM25 top-500 with automatic language-aware tokenization. The resolved tokenizer is shown in the Candidate Quality table, for example wordseg@ja.
harrier_oss_v1_270m: dense top-500 from microsoft/harrier-oss-v1-270m. In tables this is shown as Dense; Dense means microsoft/harrier-oss-v1-270m with the web_search_query prompt for queries and cosine similarity over normalized embeddings.
reranking_hybrid: RRF over bm25 and harrier_oss_v1_270m using rrf_k=100, keeping the RRF top-100.

Safeguard means rank 101 is appended only when RRF top-100 contains no qrels-positive document.

Split Statistics

Length statistics are character counts computed with len(str(text)).

Nano split	Queries	Corpus	Qrels	Query chars avg	Query chars p50	Query chars p75	Doc chars avg	Doc chars p50	Doc chars p75
cqadupstack_android	200	10000	809	59.3	56.5	72.0	626.7	484.0	733.0
cqadupstack_english	200	10000	1356	46.5	43.0	58.0	488.1	383.0	596.0
cqadupstack_gis	200	10000	313	60.6	58.0	74.0	966.0	667.0	1098.0
cqadupstack_mathematica	200	10000	506	50.4	46.0	62.2	1088.5	782.0	1304.0
cqadupstack_physics	200	10000	621	58.8	51.5	74.0	814.7	622.0	1014.0
cqadupstack_programmers	200	10000	634	59.1	57.0	71.2	1075.3	843.0	1343.0
cqadupstack_stats	200	10000	373	61.0	60.0	76.2	1016.6	792.0	1253.0
cqadupstack_tex	200	10000	843	50.3	46.0	60.2	1106.1	753.0	1285.0
cqadupstack_webmasters	200	10000	882	59.8	59.0	74.2	739.2	592.0	886.2
cqadupstack_wordpress	200	10000	344	55.8	54.0	66.0	1040.6	736.5	1220.2
fiqa	200	10000	534	68.5	66.5	83.0	808.8	551.0	991.0
nq	200	10000	251	48.6	46.0	56.0	616.8	528.0	831.0
pugg	200	10000	200	36.2	33.0	43.0	850.3	861.0	902.0
quora	200	10000	485	52.5	47.0	62.0	64.6	55.0	77.0

Candidate Quality

nDCG@10 and Recall@100 are computed from the included candidate rankings against the included qrels, then reported as 0-100 scores such as 52.45. Recall@100 uses only the top 100 candidates; an optional rank-101 safeguard positive is not counted in Recall@100.

Dense means microsoft/harrier-oss-v1-270m with the web_search_query prompt and cosine similarity.

Nano split	BM25 tokenizer	BM25 nDCG@10	Dense nDCG@10	Hybrid nDCG@10	BM25 Recall@100	Dense Recall@100	Hybrid Recall@100	Hybrid candidates	Safeguard positives
Mean	-	34.24	42.71	40.88	60.23	69.78	73.42	-	505
cqadupstack_android	regex	33.79	41.39	41.21	60.67	71.38	74.98	100-101	25
cqadupstack_english	regex	31.88	39.26	37.25	46.63	61.06	61.90	100-101	45
cqadupstack_gis	regex	24.23	28.61	31.43	56.21	60.21	67.65	100-101	56
cqadupstack_mathematica	regex	21.29	21.71	24.11	39.69	48.61	50.69	100-101	75
cqadupstack_physics	regex	33.59	43.06	40.24	60.11	76.83	75.88	100-101	27
cqadupstack_programmers	regex	31.91	32.75	36.07	58.86	64.23	70.23	100-101	41
cqadupstack_stats	regex	26.62	33.75	33.14	52.86	60.71	64.13	100-101	55
cqadupstack_tex	regex	25.55	28.05	31.47	51.62	56.92	61.82	100-101	50
cqadupstack_webmasters	regex	24.40	30.45	31.62	49.85	63.50	66.71	100-101	42
cqadupstack_wordpress	regex	31.39	29.51	32.89	57.79	60.76	69.66	100-101	50
fiqa	regex	23.53	38.90	35.74	52.41	70.98	72.20	100-101	26
nq	regex	30.26	61.54	43.63	76.92	92.58	94.75	100-101	9
pugg	regex	63.90	78.17	71.46	87.50	93.00	98.00	100-101	4
quora	regex	77.04	90.73	82.07	92.04	96.13	99.25	100	0

Hybrid Safeguard Summary

Safeguard positives: 505
Rows limited by corpus size: 0
Metadata file: reranking_hybrid_metadata.json

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NanoMTEB-Polish is a derived dataset. Users must comply with the licenses, terms, and attribution requirements of the upstream MTEB task sources and their original datasets.