---
language:
  - en
license: apache-2.0
tags:
  - text
pretty_name: "BFHND: Big Hard Negatives Dataset"
size_categories:
  - "100K<n<1M"
source_datasets:
  - "BeIR"
task_categories:
  - sentence-similarity
dataset_info:
  config_name: default
  features:
  - name: query
    dtype: string
  - name: positive
    sequence: string
  - name: negative
    sequence: string
  splits:
    - name: train
      num_bytes: 221539473625
      num_examples: 7240617
train-eval-index:
  - config: default
    task: sentence-similarity
    splits:
      train_split: train
configs:
- config_name: default
  data_files:
  - split: train
    path: "data/train/*"
---

# Big Hard Negatives Dataset

A dataset for training embedding models for semantic search.

TODO: add desc

A dataset in a [nixietune](https://github.com/nixiesearch/nixietune) compatible format:

```json
{
  "query": ")what was the immediate impact of the success of the manhattan project?",
  "pos": [
    "The presence of communication amid scientific minds was equally important to the success of the Manhattan Project as scientific intellect was. The only cloud hanging over the impressive achievement of the atomic researchers and engineers is what their success truly meant; hundreds of thousands of innocent lives obliterated."
  ],
  "neg": [
    "Abstract. The pivotal engineering and scientific success of the Twentieth century was the Manhattan Project. The Manhattan Project assimilated concepts and leaders from all scientific fields and engineering disciplines to construct the first two atomic bombs.",
    "The pivotal engineering and scientific success of the Twentieth century was the Manhattan Project. The Manhattan Project assimilated concepts and leaders from all scientific fields and engineering disciplines to construct the first two atomic bombs."
  ]
}
```

## Usage

To use with HF datasets:

```bash
pip install datasets zstandard
```

```python
from datasets import load_dataset

data = load_dataset('nixiesearch/bfhnd-small')
print(data["train"].features)
```

## License

Apache 2.0