Datasets:
Tasks:
Text Retrieval
Modalities:
Text
Formats:
json
Sub-tasks:
document-retrieval
Size:
10M - 100M
ArXiv:
Tags:
text-retrieval
metadata
language:
- ara
- dan
- deu
- eng
- fas
- fra
- hin
- ind
- ita
- jpn
- kor
- nld
- pol
- por
- rus
- spa
- swe
- tur
- vie
- zho
multilinguality:
- multilingual
task_categories:
- text-retrieval
task_ids:
- document-retrieval
config_names:
- corpus
tags:
- text-retrieval
dataset_info:
- config_name: ara-qrels
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- name: corpus-id
dtype: string
- name: score
dtype: float64
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- name: test
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- config_name: ara-corpus
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- name: title
dtype: string
- name: text
dtype: string
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- config_name: ara-queries
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- name: test
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- config_name: dan-qrels
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- name: test
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num_examples: 10000
- config_name: dan-corpus
features:
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splits:
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- name: test
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- config_name: deu-qrels
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- config_name: eng-qrels
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- config_name: fra-corpus
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- config_name: hin-qrels
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- config_name: hin-corpus
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- config_name: ind-qrels
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- config_name: ita-qrels
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- config_name: ita-corpus
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- config_name: jpn-qrels
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- config_name: nld-qrels
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- config_name: spa-corpus
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- config_name: vie-qrels
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configs:
- config_name: ara-qrels
data_files:
- split: train
path: ara/qrels-train.jsonl
- split: test
path: ara/qrels-test.jsonl
- config_name: ara-corpus
data_files:
- split: corpus
path: ara/corpus.jsonl
- config_name: ara-queries
data_files:
- split: train
path: ara/queries-train.jsonl
- split: test
path: ara/queries-test.jsonl
- config_name: dan-qrels
data_files:
- split: train
path: dan/qrels-train.jsonl
- split: test
path: dan/qrels-test.jsonl
- config_name: dan-corpus
data_files:
- split: corpus
path: dan/corpus.jsonl
- config_name: dan-queries
data_files:
- split: train
path: dan/queries-train.jsonl
- split: test
path: dan/queries-test.jsonl
- config_name: deu-qrels
data_files:
- split: train
path: deu/qrels-train.jsonl
- split: test
path: deu/qrels-test.jsonl
- config_name: deu-corpus
data_files:
- split: corpus
path: deu/corpus.jsonl
- config_name: deu-queries
data_files:
- split: train
path: deu/queries-train.jsonl
- split: test
path: deu/queries-test.jsonl
- config_name: eng-qrels
data_files:
- split: train
path: eng/qrels-train.jsonl
- split: test
path: eng/qrels-test.jsonl
- config_name: eng-corpus
data_files:
- split: corpus
path: eng/corpus.jsonl
- config_name: eng-queries
data_files:
- split: train
path: eng/queries-train.jsonl
- split: test
path: eng/queries-test.jsonl
- config_name: fas-qrels
data_files:
- split: train
path: fas/qrels-train.jsonl
- split: test
path: fas/qrels-test.jsonl
- config_name: fas-corpus
data_files:
- split: corpus
path: fas/corpus.jsonl
- config_name: fas-queries
data_files:
- split: train
path: fas/queries-train.jsonl
- split: test
path: fas/queries-test.jsonl
- config_name: fra-qrels
data_files:
- split: train
path: fra/qrels-train.jsonl
- split: test
path: fra/qrels-test.jsonl
- config_name: fra-corpus
data_files:
- split: corpus
path: fra/corpus.jsonl
- config_name: fra-queries
data_files:
- split: train
path: fra/queries-train.jsonl
- split: test
path: fra/queries-test.jsonl
- config_name: hin-qrels
data_files:
- split: train
path: hin/qrels-train.jsonl
- split: test
path: hin/qrels-test.jsonl
- config_name: hin-corpus
data_files:
- split: corpus
path: hin/corpus.jsonl
- config_name: hin-queries
data_files:
- split: train
path: hin/queries-train.jsonl
- split: test
path: hin/queries-test.jsonl
- config_name: ind-qrels
data_files:
- split: train
path: ind/qrels-train.jsonl
- split: test
path: ind/qrels-test.jsonl
- config_name: ind-corpus
data_files:
- split: corpus
path: ind/corpus.jsonl
- config_name: ind-queries
data_files:
- split: train
path: ind/queries-train.jsonl
- split: test
path: ind/queries-test.jsonl
- config_name: ita-qrels
data_files:
- split: train
path: ita/qrels-train.jsonl
- split: test
path: ita/qrels-test.jsonl
- config_name: ita-corpus
data_files:
- split: corpus
path: ita/corpus.jsonl
- config_name: ita-queries
data_files:
- split: train
path: ita/queries-train.jsonl
- split: test
path: ita/queries-test.jsonl
- config_name: jpn-qrels
data_files:
- split: train
path: jpn/qrels-train.jsonl
- split: test
path: jpn/qrels-test.jsonl
- config_name: jpn-corpus
data_files:
- split: corpus
path: jpn/corpus.jsonl
- config_name: jpn-queries
data_files:
- split: train
path: jpn/queries-train.jsonl
- split: test
path: jpn/queries-test.jsonl
- config_name: kor-qrels
data_files:
- split: train
path: kor/qrels-train.jsonl
- split: test
path: kor/qrels-test.jsonl
- config_name: kor-corpus
data_files:
- split: corpus
path: kor/corpus.jsonl
- config_name: kor-queries
data_files:
- split: train
path: kor/queries-train.jsonl
- split: test
path: kor/queries-test.jsonl
- config_name: nld-qrels
data_files:
- split: train
path: nld/qrels-train.jsonl
- split: test
path: nld/qrels-test.jsonl
- config_name: nld-corpus
data_files:
- split: corpus
path: nld/corpus.jsonl
- config_name: nld-queries
data_files:
- split: train
path: nld/queries-train.jsonl
- split: test
path: nld/queries-test.jsonl
- config_name: pol-qrels
data_files:
- split: train
path: pol/qrels-train.jsonl
- split: test
path: pol/qrels-test.jsonl
- config_name: pol-corpus
data_files:
- split: corpus
path: pol/corpus.jsonl
- config_name: pol-queries
data_files:
- split: train
path: pol/queries-train.jsonl
- split: test
path: pol/queries-test.jsonl
- config_name: por-qrels
data_files:
- split: train
path: por/qrels-train.jsonl
- split: test
path: por/qrels-test.jsonl
- config_name: por-corpus
data_files:
- split: corpus
path: por/corpus.jsonl
- config_name: por-queries
data_files:
- split: train
path: por/queries-train.jsonl
- split: test
path: por/queries-test.jsonl
- config_name: rus-qrels
data_files:
- split: train
path: rus/qrels-train.jsonl
- split: test
path: rus/qrels-test.jsonl
- config_name: rus-corpus
data_files:
- split: corpus
path: rus/corpus.jsonl
- config_name: rus-queries
data_files:
- split: train
path: rus/queries-train.jsonl
- split: test
path: rus/queries-test.jsonl
- config_name: spa-qrels
data_files:
- split: train
path: spa/qrels-train.jsonl
- split: test
path: spa/qrels-test.jsonl
- config_name: spa-corpus
data_files:
- split: corpus
path: spa/corpus.jsonl
- config_name: spa-queries
data_files:
- split: train
path: spa/queries-train.jsonl
- split: test
path: spa/queries-test.jsonl
- config_name: swe-qrels
data_files:
- split: train
path: swe/qrels-train.jsonl
- split: test
path: swe/qrels-test.jsonl
- config_name: swe-corpus
data_files:
- split: corpus
path: swe/corpus.jsonl
- config_name: swe-queries
data_files:
- split: train
path: swe/queries-train.jsonl
- split: test
path: swe/queries-test.jsonl
- config_name: tur-qrels
data_files:
- split: train
path: tur/qrels-train.jsonl
- split: test
path: tur/qrels-test.jsonl
- config_name: tur-corpus
data_files:
- split: corpus
path: tur/corpus.jsonl
- config_name: tur-queries
data_files:
- split: train
path: tur/queries-train.jsonl
- split: test
path: tur/queries-test.jsonl
- config_name: vie-qrels
data_files:
- split: train
path: vie/qrels-train.jsonl
- split: test
path: vie/qrels-test.jsonl
- config_name: vie-corpus
data_files:
- split: corpus
path: vie/corpus.jsonl
- config_name: vie-queries
data_files:
- split: train
path: vie/queries-train.jsonl
- split: test
path: vie/queries-test.jsonl
- config_name: zho-qrels
data_files:
- split: train
path: zho/qrels-train.jsonl
- split: test
path: zho/qrels-test.jsonl
- config_name: zho-corpus
data_files:
- split: corpus
path: zho/corpus.jsonl
- config_name: zho-queries
data_files:
- split: train
path: zho/queries-train.jsonl
- split: test
path: zho/queries-test.jsonl
WebFAQ Retrieval Dataset
Overview | Details | Structure | Examples | Considerations | License | Citation | Contact | Acknowledgement
Overview
The WebFAQ Retrieval Dataset is a carefully filtered and curated subset of the broader WebFAQ Q&A Dataset.
It is purpose-built for Information Retrieval (IR) tasks, such as training and evaluating dense or sparse retrieval models in multiple languages.
Each of the 20 largest languages from the WebFAQ corpus has been thoroughly cleaned and refined to ensure an unblurred notion of relevance between a query (question) and its corresponding document (answer). In particular, we applied:
- Deduplication of near-identical questions,
- Semantic consistency checks for question-answer alignment,
- Train/Test splits for retrieval experiments.
Details
Languages
The WebFAQ Retrieval Dataset covers 20 high-resource languages from the original WebFAQ corpus, each comprising tens of thousands to hundreds of thousands of QA pairs after our rigorous filtering steps:
| Language | # QA pairs |
|---|---|
| ara | 143k |
| dan | 138k |
| deu | 891k |
| eng | 5.28M |
| fas | 227k |
| fra | 570k |
| hin | 96.6k |
| ind | 96.6k |
| ita | 209k |
| jpn | 280k |
| kor | 79.1k |
| nld | 349k |
| pol | 179k |
| por | 186k |
| rus | 346k |
| spa | 558k |
| swe | 144k |
| tur | 110k |
| vie | 105k |
| zho | 125k |
Structure
Unlike the raw Q&A dataset, WebFAQ Retrieval provides explicit train/test splits for each of the 20 languages. The general structure for each language is:
- Corpus: A set of unique documents (answers) with IDs and text fields.
- Queries: A set of question strings, each tied to a document ID for relevance.
- Qrels: Relevance labels, mapping each question to its relevant document (corresponding answer).
Folder Layout (e.g., for eng)
eng/
├── corpus.jsonl # all unique documents (answers)
├── queries.jsonl # all queries for train/test
├── train.jsonl # relevance annotations for train
└── test.jsonl # relevance annotations for test
Examples
Below is a small snippet showing how to load English train/test sets with 🤗 Datasets:
import json
from datasets import load_dataset
from tqdm import tqdm
# Load train qrels
train_qrels = load_dataset(
"anonymous202501/webfaq-retrieval",
"eng-qrels",
split="train"
)
# Inspect first qrel
print(json.dumps(train_qrels[0], indent=4))
# Load the corpus (answers)
data_corpus = load_dataset(
"anonymous202501/webfaq-retrieval",
"eng-corpus",
split="corpus"
)
corpus = {
d["_id"]: {"title": d["title"], "text": d["text"]} for d in tqdm(data_corpus)
}
# Inspect first document
print("Document:")
print(json.dumps(corpus[train_qrels[0]["corpus-id"]], indent=4))
# Load all queries
data_queries = load_dataset(
"anonymous202501/webfaq-retrieval",
"eng-queries",
split="queries"
)
queries = {
q["_id"]: q["text"] for q in tqdm(data_queries)
}
# Inspect first query
print("Query:")
print(json.dumps(queries[train_qrels[0]["query-id"]], indent=4))
# Keep only those queries with relevance annotations
query_ids = set([q["query-id"] for q in train_qrels])
queries = {
qid: query for qid, query in queries.items() if qid in query_ids
}
print(f"Number of queries: {len(queries)}")
Below is a code snippet showing how to evaluate retrieval performance using the mteb library:
Note: WebFAQ is not yet available as multilingual task in the
mteblibrary. The code snippet below is a placeholder for when it becomes available.
from mteb import MTEB
from mteb.tasks.Retrieval.multilingual.WebFAQRetrieval import WebFAQRetrieval
# ... Load model ...
# Load the WebFAQ task
task = WebFAQRetrieval()
eval_split = "test"
evaluation = MTEB(tasks=[task])
evaluation.run(
model,
eval_splits=[eval_split],
output_folder="output",
overwrite_results=True
)
Considerations
Please note the following considerations when using the collected QAs:
- [Q&A Dataset] Risk of Duplicate or Near-Duplicate Content: The raw Q&A dataset is large and includes minor paraphrases.
- [Retrieval Dataset] Sparse Relevance: As raw FAQ data, each question typically has one “best” (on-page) answer. Additional valid answers may exist on other websites but are not labeled as relevant.
- Language Detection Limitations: Some QA pairs mix languages, or contain brand names, which can confuse automatic language classification.
- No Guarantee of Factual Accuracy: Answers reflect the content of the source websites. They may include outdated, biased, or incorrect information.
- Copyright and Privacy: Please ensure compliance with any applicable laws and the source website’s terms.
License
The Collection of WebFAQ Datasets is shared under Creative Commons Attribution 4.0 (CC BY 4.0) license.
Note: The dataset is derived from public webpages in Common Crawl snapshots (2022–2024) and intended for research purposes. Each FAQ’s text is published by the original website under their terms. Downstream users should verify any usage constraints from the original websites as well as Common Crawl’s Terms of Use.
Citation
If you use this dataset in your research, please consider citing the associated paper:
@misc{dinzinger2025webfaq,
title={WebFAQ: A Multilingual Collection of Natural Q&A Datasets for Dense Retrieval},
author={Michael Dinzinger and Laura Caspari and Kanishka Ghosh Dastidar and Jelena Mitrović and Michael Granitzer},
year={2025},
eprint={2502.20936},
archivePrefix={arXiv},
primaryClass={cs.CL}
}
Contact
For inquiries and feedback, please feel free to contact us via E-Mail ([email protected]) or start a discussion on HuggingFace or GitHub.
Acknowledgement
We thank the Common Crawl and Web Data Commons teams for providing the underlying data, and all contributors who helped shape the WebFAQ project.
Thank you
We hope the Collection of WebFAQ Datasets serves as a valuable resource for your research. Please consider citing it in any publications or projects that use it. If you encounter issues or want to contribute improvements, feel free to get in touch with us on HuggingFace or GitHub.
Happy researching!