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metadata
annotations_creators:
  - human-annotated
language:
  - eng
license: mit
multilinguality: monolingual
task_categories:
  - text-ranking
task_ids:
  - document-retrieval
dataset_info:
  - config_name: corpus
    features:
      - name: _id
        dtype: string
      - name: text
        dtype: string
      - name: title
        dtype: string
    splits:
      - name: test
        num_bytes: 3754590
        num_examples: 5112
    download_size: 893410
    dataset_size: 3754590
  - config_name: qrels
    features:
      - name: query-id
        dtype: string
      - name: corpus-id
        dtype: string
      - name: score
        dtype: int64
    splits:
      - name: test
        num_bytes: 96592
        num_examples: 2766
    download_size: 31056
    dataset_size: 96592
  - config_name: queries
    features:
      - name: _id
        dtype: string
      - name: text
        dtype: string
    splits:
      - name: test
        num_bytes: 233567
        num_examples: 2766
    download_size: 105762
    dataset_size: 233567
  - config_name: top_ranked
    features:
      - name: query-id
        dtype: string
      - name: corpus-ids
        sequence: string
    splits:
      - name: test
        num_bytes: 125526
        num_examples: 2766
    download_size: 34006
    dataset_size: 125526
configs:
  - config_name: corpus
    data_files:
      - split: test
        path: corpus/test-*
  - config_name: qrels
    data_files:
      - split: test
        path: qrels/test-*
  - config_name: queries
    data_files:
      - split: test
        path: queries/test-*
  - config_name: top_ranked
    data_files:
      - split: test
        path: top_ranked/test-*
tags:
  - mteb
  - text

NevIR

An MTEB dataset
Massive Text Embedding Benchmark

Paired evaluation of real world negation in retrieval, with questions and passages. Since models generally prefer one passage over the other always, there are two questions that the model must get right to understand the negation (hence the paired_accuracy metric).

Task category t2t
Domains Web
Reference https://github.com/orionw/NevIR

How to evaluate on this task

You can evaluate an embedding model on this dataset using the following code:

import mteb

task = mteb.get_tasks(["NevIR"])
evaluator = mteb.MTEB(task)

model = mteb.get_model(YOUR_MODEL)
evaluator.run(model)

To learn more about how to run models on mteb task check out the GitHub repitory.

Citation

If you use this dataset, please cite the dataset as well as mteb, as this dataset likely includes additional processing as a part of the MMTEB Contribution.


@inproceedings{Weller2023NevIRNI,
  author = {{Orion Weller and Dawn J Lawrie and Benjamin Van Durme}},
  booktitle = {{Conference of the European Chapter of the Association for Computational Linguistics}},
  title = {{NevIR: Negation in Neural Information Retrieval}},
  url = {{https://api.semanticscholar.org/CorpusID:258676146}},
  year = {{2023}},
}


@article{enevoldsen2025mmtebmassivemultilingualtext,
  title={MMTEB: Massive Multilingual Text Embedding Benchmark},
  author={Kenneth Enevoldsen and Isaac Chung and Imene Kerboua and Márton Kardos and Ashwin Mathur and David Stap and Jay Gala and Wissam Siblini and Dominik Krzemiński and Genta Indra Winata and Saba Sturua and Saiteja Utpala and Mathieu Ciancone and Marion Schaeffer and Gabriel Sequeira and Diganta Misra and Shreeya Dhakal and Jonathan Rystrøm and Roman Solomatin and Ömer Çağatan and Akash Kundu and Martin Bernstorff and Shitao Xiao and Akshita Sukhlecha and Bhavish Pahwa and Rafał Poświata and Kranthi Kiran GV and Shawon Ashraf and Daniel Auras and Björn Plüster and Jan Philipp Harries and Loïc Magne and Isabelle Mohr and Mariya Hendriksen and Dawei Zhu and Hippolyte Gisserot-Boukhlef and Tom Aarsen and Jan Kostkan and Konrad Wojtasik and Taemin Lee and Marek Šuppa and Crystina Zhang and Roberta Rocca and Mohammed Hamdy and Andrianos Michail and John Yang and Manuel Faysse and Aleksei Vatolin and Nandan Thakur and Manan Dey and Dipam Vasani and Pranjal Chitale and Simone Tedeschi and Nguyen Tai and Artem Snegirev and Michael Günther and Mengzhou Xia and Weijia Shi and Xing Han Lù and Jordan Clive and Gayatri Krishnakumar and Anna Maksimova and Silvan Wehrli and Maria Tikhonova and Henil Panchal and Aleksandr Abramov and Malte Ostendorff and Zheng Liu and Simon Clematide and Lester James Miranda and Alena Fenogenova and Guangyu Song and Ruqiya Bin Safi and Wen-Ding Li and Alessia Borghini and Federico Cassano and Hongjin Su and Jimmy Lin and Howard Yen and Lasse Hansen and Sara Hooker and Chenghao Xiao and Vaibhav Adlakha and Orion Weller and Siva Reddy and Niklas Muennighoff},
  publisher = {arXiv},
  journal={arXiv preprint arXiv:2502.13595},
  year={2025},
  url={https://arxiv.org/abs/2502.13595},
  doi = {10.48550/arXiv.2502.13595},
}

@article{muennighoff2022mteb,
  author = {Muennighoff, Niklas and Tazi, Nouamane and Magne, Lo{\"\i}c and Reimers, Nils},
  title = {MTEB: Massive Text Embedding Benchmark},
  publisher = {arXiv},
  journal={arXiv preprint arXiv:2210.07316},
  year = {2022}
  url = {https://arxiv.org/abs/2210.07316},
  doi = {10.48550/ARXIV.2210.07316},
}

Dataset Statistics

Dataset Statistics

The following code contains the descriptive statistics from the task. These can also be obtained using:

import mteb

task = mteb.get_task("NevIR")

desc_stats = task.metadata.descriptive_stats
{
    "test": {
        "num_samples": 7878,
        "number_of_characters": 3829988,
        "num_documents": 5112,
        "min_document_length": 95,
        "average_document_length": 712.460289514867,
        "max_document_length": 1317,
        "unique_documents": 5112,
        "num_queries": 2766,
        "min_query_length": 19,
        "average_query_length": 67.9287780187997,
        "max_query_length": 168,
        "unique_queries": 2766,
        "none_queries": 0,
        "num_relevant_docs": 2766,
        "min_relevant_docs_per_query": 1,
        "average_relevant_docs_per_query": 1.0,
        "max_relevant_docs_per_query": 1,
        "unique_relevant_docs": 2766,
        "num_instructions": null,
        "min_instruction_length": null,
        "average_instruction_length": null,
        "max_instruction_length": null,
        "unique_instructions": null,
        "num_top_ranked": null,
        "min_top_ranked_per_query": null,
        "average_top_ranked_per_query": null,
        "max_top_ranked_per_query": null
    }
}

This dataset card was automatically generated using MTEB