Task Categories: token-classification
Languages: English
Multilinguality: monolingual
Size Categories: 100K<n<1M
Language Creators: found
Annotations Creators: crowdsourced
Source Datasets: original
Licenses: cc-by-4.0
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Cannot load the dataset split (in normal download mode) to extract the first rows.
Error code:   NormalRowsError
Exception:    NonMatchingChecksumError
Message:      Checksums didn't match for dataset source files:
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/download/", line 453, in xopen
                  file_obj =, mode=mode, *args, **kwargs).open()
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/", line 467, in open
                  return open_files(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/", line 299, in open_files
                  fs, fs_token, paths = get_fs_token_paths(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/", line 632, in get_fs_token_paths
                  fs = filesystem(protocol, **inkwargs)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/", line 266, in filesystem
                  return cls(**storage_options)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/", line 76, in __call__
                  obj = super().__call__(*args, **kwargs)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/implementations/", line 58, in __init__
         = zipfile.ZipFile(
                File "/usr/local/lib/python3.9/", line 1257, in __init__
                File "/usr/local/lib/python3.9/", line 1320, in _RealGetContents
                  endrec = _EndRecData(fp)
                File "/usr/local/lib/python3.9/", line 263, in _EndRecData
        , 2)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/fsspec/implementations/", line 684, in seek
                  raise ValueError("Cannot seek streaming HTTP file")
              ValueError: Cannot seek streaming HTTP file
              The above exception was the direct cause of the following exception:
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/responses/", line 337, in get_first_rows_response
                  rows = get_rows(dataset, config, split, streaming=True, rows_max_number=rows_max_number, hf_token=hf_token)
                File "/src/services/worker/src/worker/", line 123, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/responses/", line 77, in get_rows
                  rows_plus_one = list(itertools.islice(ds, rows_max_number + 1))
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 718, in __iter__
                  for key, example in self._iter():
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 708, in _iter
                  yield from ex_iterable
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 112, in __iter__
                  yield from self.generate_examples_fn(**self.kwargs)
                File "/tmp/modules-cache/datasets_modules/datasets/GateNLP--broad_twitter_corpus/df321aa972ee15c739adc803520c0d042e81091de53427ba0cb288adb136f8da/", line 139, in _generate_examples
                  with open(filepath, encoding="utf-8") as f:
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 67, in wrapper
                  return function(*args, use_auth_token=use_auth_token, **kwargs)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/download/", line 456, in xopen
                  raise NonStreamableDatasetError(
     Streaming is not possible for this dataset because data host server doesn't support HTTP range requests. You can still load this dataset in non-streaming mode by passing `streaming=False` (default)
              During handling of the above exception, another exception occurred:
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/responses/", line 345, in get_first_rows_response
                  rows = get_rows(
                File "/src/services/worker/src/worker/", line 123, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/responses/", line 65, in get_rows
                  ds = load_dataset(
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 1746, in load_dataset
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 704, in download_and_prepare
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 1227, in _download_and_prepare
                  super()._download_and_prepare(dl_manager, verify_infos, check_duplicate_keys=verify_infos)
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/", line 775, in _download_and_prepare
                File "/src/services/worker/.venv/lib/python3.9/site-packages/datasets/utils/", line 40, in verify_checksums
                  raise NonMatchingChecksumError(error_msg + str(bad_urls))
              datasets.utils.info_utils.NonMatchingChecksumError: Checksums didn't match for dataset source files:

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Dataset Card for broad_twitter_corpus

Dataset Summary

This is the Broad Twitter corpus, a dataset of tweets collected over stratified times, places and social uses. The goal is to represent a broad range of activities, giving a dataset more representative of the language used in this hardest of social media formats to process. Further, the BTC is annotated for named entities.

See the paper, Broad Twitter Corpus: A Diverse Named Entity Recognition Resource, for details.

Supported Tasks and Leaderboards


English from UK, US, Australia, Canada, Ireland, New Zealand; bcp47:en

Dataset Structure

Data Instances

Feature Count
Documents 9 551
Tokens 165 739
Person entities 5 271
Location entities 3 114
Organization entities 3 732

Data Fields

Each tweet contains an ID, a list of tokens, and a list of NER tags

  • id: a string feature.
  • tokens: a list of strings
  • ner_tags: a list of class IDs (ints) representing the NER class:
  0: O
  1: B-PER
  2: I-PER
  3: B-ORG
  4: I-ORG
  5: B-LOC
  6: I-LOC

Data Splits

Section Region Collection period Description Annotators Tweet count
A UK 2012.01 General collection Expert 1000
B UK 2012.01-02 Non-directed tweets Expert 2000
E Global 2014.07 Related to MH17 disaster Crowd & expert 200
F Stratified 2009-2014 Twitterati Crowd & expert 2000
G Stratified 2011-2014 Mainstream news Crowd & expert 2351
H Non-UK 2014 General collection Crowd & expert 2000

The most varied parts of the BTC are sections F and H. However, each of the remaining four sections has some specific readily-identifiable bias. So, we propose that one uses half of section H for evaluation and leaves the other half in the training data. Section H should be partitioned in the order of the JSON-format lines. Note that the CoNLL-format data is readily reconstructible from the JSON format, which is the authoritative data format from which others are derived.

Test: Section F

Development: Section H (the paper says "second half of Section H" but ordinality could be ambiguous, so it all goes in. Bonne chance)

Training: everything else

Dataset Creation

Curation Rationale

[Needs More Information]

Source Data

Initial Data Collection and Normalization

[Needs More Information]

Who are the source language producers?

[Needs More Information]


Annotation process

[Needs More Information]

Who are the annotators?

[Needs More Information]

Personal and Sensitive Information

[Needs More Information]

Considerations for Using the Data

Social Impact of Dataset

[Needs More Information]

Discussion of Biases

[Needs More Information]

Other Known Limitations

[Needs More Information]

Additional Information

Dataset Curators

[Needs More Information]

Licensing Information

Creative Commons Attribution 4.0 International (CC BY 4.0)

Citation Information

  title={Broad twitter corpus: A diverse named entity recognition resource},
  author={Derczynski, Leon and Bontcheva, Kalina and Roberts, Ian},
  booktitle={Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers},


Author-added dataset @leondz