configs:
- config_name: corpus
data_files:
- split: Nano2WikiMultihopQA
path: corpus/Nano2WikiMultihopQA-00000-of-00001.parquet
- split: NanoNarrativeQA
path: corpus/NanoNarrativeQA-00000-of-00001.parquet
- split: NanoNeedle
path: corpus/NanoNeedle-00000-of-00001.parquet
- split: NanoPasskey
path: corpus/NanoPasskey-00000-of-00001.parquet
- split: NanoQMSum
path: corpus/NanoQMSum-00000-of-00001.parquet
- split: NanoSummScreenFD
path: corpus/NanoSummScreenFD-00000-of-00001.parquet
- config_name: queries
data_files:
- split: Nano2WikiMultihopQA
path: queries/Nano2WikiMultihopQA-00000-of-00001.parquet
- split: NanoNarrativeQA
path: queries/NanoNarrativeQA-00000-of-00001.parquet
- split: NanoNeedle
path: queries/NanoNeedle-00000-of-00001.parquet
- split: NanoPasskey
path: queries/NanoPasskey-00000-of-00001.parquet
- split: NanoQMSum
path: queries/NanoQMSum-00000-of-00001.parquet
- split: NanoSummScreenFD
path: queries/NanoSummScreenFD-00000-of-00001.parquet
default: true
- config_name: qrels
data_files:
- split: Nano2WikiMultihopQA
path: qrels/Nano2WikiMultihopQA-00000-of-00001.parquet
- split: NanoNarrativeQA
path: qrels/NanoNarrativeQA-00000-of-00001.parquet
- split: NanoNeedle
path: qrels/NanoNeedle-00000-of-00001.parquet
- split: NanoPasskey
path: qrels/NanoPasskey-00000-of-00001.parquet
- split: NanoQMSum
path: qrels/NanoQMSum-00000-of-00001.parquet
- split: NanoSummScreenFD
path: qrels/NanoSummScreenFD-00000-of-00001.parquet
- config_name: bm25
data_files:
- split: Nano2WikiMultihopQA
path: bm25/Nano2WikiMultihopQA-00000-of-00001.parquet
- split: NanoNarrativeQA
path: bm25/NanoNarrativeQA-00000-of-00001.parquet
- split: NanoNeedle
path: bm25/NanoNeedle-00000-of-00001.parquet
- split: NanoPasskey
path: bm25/NanoPasskey-00000-of-00001.parquet
- split: NanoQMSum
path: bm25/NanoQMSum-00000-of-00001.parquet
- split: NanoSummScreenFD
path: bm25/NanoSummScreenFD-00000-of-00001.parquet
- config_name: harrier_oss_v1_270m
data_files:
- split: Nano2WikiMultihopQA
path: harrier_oss_v1_270m/Nano2WikiMultihopQA-00000-of-00001.parquet
- split: NanoNarrativeQA
path: harrier_oss_v1_270m/NanoNarrativeQA-00000-of-00001.parquet
- split: NanoNeedle
path: harrier_oss_v1_270m/NanoNeedle-00000-of-00001.parquet
- split: NanoPasskey
path: harrier_oss_v1_270m/NanoPasskey-00000-of-00001.parquet
- split: NanoQMSum
path: harrier_oss_v1_270m/NanoQMSum-00000-of-00001.parquet
- split: NanoSummScreenFD
path: harrier_oss_v1_270m/NanoSummScreenFD-00000-of-00001.parquet
- config_name: reranking_hybrid
data_files:
- split: Nano2WikiMultihopQA
path: reranking_hybrid/Nano2WikiMultihopQA-00000-of-00001.parquet
- split: NanoNarrativeQA
path: reranking_hybrid/NanoNarrativeQA-00000-of-00001.parquet
- split: NanoNeedle
path: reranking_hybrid/NanoNeedle-00000-of-00001.parquet
- split: NanoPasskey
path: reranking_hybrid/NanoPasskey-00000-of-00001.parquet
- split: NanoQMSum
path: reranking_hybrid/NanoQMSum-00000-of-00001.parquet
- split: NanoSummScreenFD
path: reranking_hybrid/NanoSummScreenFD-00000-of-00001.parquet
language:
- en
tags:
- Long Context
- retrieval
- nano
- information-retrieval
- bm25
- dense-retrieval
- reranking
- hakari-bench
dataset_info:
- config_name: bm25
features:
- name: query-id
dtype: string
- name: corpus-ids
list: string
splits:
- name: Nano2WikiMultihopQA
num_bytes: 641290
num_examples: 200
- name: NanoNarrativeQA
num_bytes: 762290
num_examples: 200
- name: NanoNeedle
num_bytes: 832482
num_examples: 98
- name: NanoPasskey
num_bytes: 837165
num_examples: 100
- name: NanoQMSum
num_bytes: 414690
num_examples: 200
- name: NanoSummScreenFD
num_bytes: 720490
num_examples: 200
download_size: 4210841
dataset_size: 4208407
- config_name: corpus
features:
- name: _id
dtype: string
- name: text
dtype: string
splits:
- name: Nano2WikiMultihopQA
num_bytes: 11283128
num_examples: 300
- name: NanoNarrativeQA
num_bytes: 116191265
num_examples: 355
- name: NanoNeedle
num_bytes: 28226538
num_examples: 800
- name: NanoPasskey
num_bytes: 23182064
num_examples: 800
- name: NanoQMSum
num_bytes: 10515610
num_examples: 197
- name: NanoSummScreenFD
num_bytes: 10373940
num_examples: 336
download_size: 95954462
dataset_size: 199772545
- config_name: harrier_oss_v1_270m
features:
- name: query-id
dtype: string
- name: corpus-ids
list: string
splits:
- name: Nano2WikiMultihopQA
num_bytes: 641290
num_examples: 200
- name: NanoNarrativeQA
num_bytes: 762290
num_examples: 200
- name: NanoNeedle
num_bytes: 842815
num_examples: 98
- name: NanoPasskey
num_bytes: 831334
num_examples: 100
- name: NanoQMSum
num_bytes: 414690
num_examples: 200
- name: NanoSummScreenFD
num_bytes: 720490
num_examples: 200
download_size: 4215430
dataset_size: 4212909
- config_name: qrels
features:
- name: query-id
dtype: string
- name: corpus-id
dtype: string
splits:
- name: Nano2WikiMultihopQA
num_bytes: 4614
num_examples: 200
- name: NanoNarrativeQA
num_bytes: 4616
num_examples: 200
- name: NanoNeedle
num_bytes: 3362
num_examples: 98
- name: NanoPasskey
num_bytes: 3434
num_examples: 100
- name: NanoQMSum
num_bytes: 4576
num_examples: 200
- name: NanoSummScreenFD
num_bytes: 4631
num_examples: 200
download_size: 18531
dataset_size: 25233
- config_name: queries
features:
- name: _id
dtype: string
- name: text
dtype: string
splits:
- name: Nano2WikiMultihopQA
num_bytes: 16812
num_examples: 200
- name: NanoNarrativeQA
num_bytes: 13155
num_examples: 200
- name: NanoNeedle
num_bytes: 7953
num_examples: 98
- name: NanoPasskey
num_bytes: 5997
num_examples: 100
- name: NanoQMSum
num_bytes: 92566
num_examples: 200
- name: NanoSummScreenFD
num_bytes: 123428
num_examples: 200
download_size: 165197
dataset_size: 259911
- config_name: reranking_hybrid
features:
- name: query-id
dtype: string
- name: corpus-ids
list: string
splits:
- name: Nano2WikiMultihopQA
num_bytes: 215691
num_examples: 200
- name: NanoNarrativeQA
num_bytes: 217014
num_examples: 200
- name: NanoNeedle
num_bytes: 170732
num_examples: 98
- name: NanoPasskey
num_bytes: 167789
num_examples: 100
- name: NanoQMSum
num_bytes: 211758
num_examples: 200
- name: NanoSummScreenFD
num_bytes: 216907
num_examples: 200
download_size: 1202006
dataset_size: 1199891
NanoLongEmbed
This dataset is a Nano-style retrieval dataset for HAKARI-bench.
NanoLongEmbed contains Nano-style long-context retrieval splits derived from LongEmbed tasks.
Usage
from datasets import load_dataset
dataset_id = "hakari-bench/NanoLongEmbed"
split = "Nano2WikiMultihopQA"
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_idandtextqueries: queries with_idandtextqrels: positive relevance labels withquery-idandcorpus-idbm25: BM25 candidate lists withquery-idandcorpus-idsharrier_oss_v1_270m: dense candidate lists frommicrosoft/harrier-oss-v1-270mreranking_hybrid: RRF candidate lists built frombm25andharrier_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 examplewordseg@ja.harrier_oss_v1_270m: dense top-500 frommicrosoft/harrier-oss-v1-270m. In tables this is shown asDense; Dense meansmicrosoft/harrier-oss-v1-270mwith theweb_search_queryprompt for queries and cosine similarity over normalized embeddings.reranking_hybrid: RRF overbm25andharrier_oss_v1_270musingrrf_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 |
|---|---|---|---|---|---|---|---|---|---|
| Nano2WikiMultihopQA | 200 | 300 | 200 | 67.5 | 65.5 | 79.2 | 37445.6 | 31645.5 | 55443.0 |
| NanoNarrativeQA | 200 | 355 | 200 | 49.3 | 47.5 | 60.0 | 326753.0 | 252633.0 | 371460.0 |
| NanoNeedle | 98 | 800 | 98 | 59.0 | 60.5 | 67.0 | 35246.1 | 12934.5 | 44460.5 |
| NanoPasskey | 100 | 800 | 100 | 37.8 | 38.0 | 39.0 | 28956.7 | 10883.0 | 36355.8 |
| NanoQMSum | 200 | 197 | 200 | 446.3 | 410.5 | 577.2 | 53335.8 | 50063.0 | 67575.0 |
| NanoSummScreenFD | 200 | 336 | 200 | 600.7 | 507.0 | 776.2 | 30854.3 | 29210.0 | 37969.8 |
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 | - | 82.17 | 61.91 | 73.15 | 97.66 | 93.40 | 98.83 | - | 13 |
| Nano2WikiMultihopQA | english_porter_stop | 95.03 | 84.00 | 91.11 | 99.00 | 96.50 | 100.00 | 100 | 0 |
| NanoNarrativeQA | english_porter_stop | 76.19 | 33.15 | 51.20 | 90.00 | 75.00 | 94.50 | 100-101 | 11 |
| NanoNeedle | english_porter_stop | 72.07 | 60.99 | 68.23 | 96.94 | 95.92 | 98.98 | 100-101 | 1 |
| NanoPasskey | english_porter_stop | 77.17 | 64.73 | 72.94 | 100.00 | 100.00 | 100.00 | 100 | 0 |
| NanoQMSum | english_porter_stop | 74.40 | 36.60 | 60.97 | 100.00 | 96.00 | 99.50 | 100-101 | 1 |
| NanoSummScreenFD | english_porter_stop | 98.13 | 91.98 | 94.43 | 100.00 | 97.00 | 100.00 | 100 | 0 |
Hybrid Safeguard Summary
- Safeguard positives: 13
- Rows limited by corpus size: 0
- Metadata file:
reranking_hybrid_metadata.json
Source Links
License
NanoLongEmbed is a derived dataset. Users must comply with the licenses, terms, and attribution requirements of the upstream datasets listed above.