Datasets:

opensearch-project
/

msmarco-hard-negatives

license: apache-2.0
configs:
  - config_name: default
    data_files:
      - split: train
        path: data/train-*
dataset_info:
  features:
    - name: query
      dtype: string
    - name: docs
      sequence: string
    - name: scores
      sequence: float64
  splits:
    - name: train
      num_bytes: 957899062
      num_examples: 502939
  download_size: 917108315
  dataset_size: 957899062

Dataset Card for MS MARCO Hard Negatives (OpenSearch)

Dataset Summary

This dataset is derived from the MS MARCO train split(Hugging Face) and provides hard-negative mining annotations to train retrieval systems. For each query from the source split, we retrieve the top-100 candidate documents using the opensearch-project/opensearch-neural-sparse-encoding-doc-v1 and attach re-ranking scores from two cross-encoders: cross-encoder/ms-marco-MiniLM-L12-v2 and castorini/monot5-3b-msmarco.

⚠️ Licensing/Usage: Because this dataset is derived from MS MARCO, please review Microsoft’s terms before using this dataset. (Microsoft GitHub, GitHub)

How to Load

import datasets
ds = datasets.load_dataset("opensearch-project/msmarco-hard-negatives", split="train")

Training example

Related training example: opensearch-sparse-model-tuning-sample. (GitHub)

To convert the dataset to text-only format for sample repo training:

import datasets

# 1) Load datasets
msmarco_hard_negatives = datasets.load_dataset(
    "opensearch-project/msmarco-hard-negatives", split="train"
)
msmarco_queries = datasets.load_dataset("BeIR/msmarco", "queries")["queries"]
msmarco_corpus = datasets.load_dataset("BeIR/msmarco", "corpus")["corpus"]

# 2) fix occasional text encoding issues
def transform_str(s):
    try:
        s = s.encode("latin1").decode("utf-8")
        return s
    except Exception:
        return s

msmarco_corpus = msmarco_corpus.map(
    lambda x: {"text": transform_str(x["text"])}, num_proc=30
)

# 3) Build convenient lookup tables
id_to_text = {_id: text for _id, text in zip(msmarco_corpus["_id"], msmarco_corpus["text"])}
qid_to_text = {_id: text for _id, text in zip(msmarco_queries["_id"], msmarco_queries["text"])}

# 4) Replace IDs with raw texts to get a text-only dataset
msmarco_hard_negatives = msmarco_hard_negatives.map(
    lambda x: {
        "query": qid_to_text[x["query"]],
        "docs": [id_to_text[doc] for doc in x["docs"]],
    },
    num_proc=30,
)

# 5) Save to disk (directory will contain the text-only view)
msmarco_hard_negatives.save_to_disk("data/msmarco_ft")

Citation

If you use this dataset, please cite: Towards Competitive Search Relevance For Inference-Free Learned Sparse Retrievers

@misc{geng2024competitivesearchrelevanceinferencefree,
      title={Towards Competitive Search Relevance For Inference-Free Learned Sparse Retrievers}, 
      author={Zhichao Geng and Dongyu Ru and Yang Yang},
      year={2024},
      eprint={2411.04403},
      archivePrefix={arXiv},
      primaryClass={cs.IR},
      url={https://arxiv.org/abs/2411.04403}, 
}

License

This project is licensed under the Apache v2.0 License.