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---
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annotations_creators:
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- no-annotation
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language_creators:
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- crowdsourced
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language:
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- en
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license:
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- cc-by-sa-3.0
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- gfdl
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multilinguality:
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- monolingual
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paperswithcode_id: wikitext-2
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pretty_name: WikiText
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size_categories:
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- 1M<n<10M
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source_datasets:
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- original
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task_categories:
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- text-generation
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- fill-mask
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task_ids:
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- language-modeling
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- masked-language-modeling
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dataset_info:
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- config_name: wikitext-103-v1
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features:
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- name: text
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dtype: string
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splits:
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- name: test
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num_bytes: 1295579
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num_examples: 4358
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- name: train
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num_bytes: 545142639
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num_examples: 1801350
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- name: validation
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num_bytes: 1154755
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num_examples: 3760
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download_size: 190229076
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dataset_size: 547592973
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- config_name: wikitext-2-v1
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features:
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- name: text
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dtype: string
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splits:
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- name: test
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num_bytes: 1270951
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num_examples: 4358
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- name: train
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num_bytes: 10918134
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num_examples: 36718
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- name: validation
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num_bytes: 1134127
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num_examples: 3760
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download_size: 4475746
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dataset_size: 13323212
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- config_name: wikitext-103-raw-v1
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features:
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- name: text
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dtype: string
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splits:
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- name: test
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num_bytes: 1305092
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num_examples: 4358
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- name: train
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num_bytes: 546501673
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num_examples: 1801350
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- name: validation
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num_bytes: 1159292
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num_examples: 3760
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download_size: 191984949
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dataset_size: 548966057
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- config_name: wikitext-2-raw-v1
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features:
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- name: text
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dtype: string
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splits:
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- name: test
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num_bytes: 1305092
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num_examples: 4358
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- name: train
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num_bytes: 11061733
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num_examples: 36718
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- name: validation
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num_bytes: 1159292
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num_examples: 3760
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download_size: 4721645
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dataset_size: 13526117
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---
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# Dataset Card for "wikitext"
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## Table of Contents
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- [Dataset Description](#dataset-description)
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- [Dataset Summary](#dataset-summary)
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- [Supported Tasks and Leaderboards](#supported-tasks-and-leaderboards)
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- [Languages](#languages)
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- [Dataset Structure](#dataset-structure)
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- [Data Instances](#data-instances)
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- [Data Fields](#data-fields)
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- [Data Splits](#data-splits)
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- [Dataset Creation](#dataset-creation)
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- [Curation Rationale](#curation-rationale)
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- [Source Data](#source-data)
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- [Annotations](#annotations)
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- [Personal and Sensitive Information](#personal-and-sensitive-information)
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- [Considerations for Using the Data](#considerations-for-using-the-data)
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- [Social Impact of Dataset](#social-impact-of-dataset)
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- [Discussion of Biases](#discussion-of-biases)
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- [Other Known Limitations](#other-known-limitations)
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- [Additional Information](#additional-information)
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- [Dataset Curators](#dataset-curators)
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- [Licensing Information](#licensing-information)
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- [Citation Information](#citation-information)
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- [Contributions](#contributions)
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## Dataset Description
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- **Homepage:** [https://blog.einstein.ai/the-wikitext-long-term-dependency-language-modeling-dataset/](https://blog.einstein.ai/the-wikitext-long-term-dependency-language-modeling-dataset/)
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- **Repository:** [More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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- **Paper:** [Pointer Sentinel Mixture Models](https://arxiv.org/abs/1609.07843)
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- **Point of Contact:** [Stephen Merity](mailto:[email protected])
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- **Size of downloaded dataset files:** 391.41 MB
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- **Size of the generated dataset:** 1.12 GB
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- **Total amount of disk used:** 1.52 GB
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### Dataset Summary
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The WikiText language modeling dataset is a collection of over 100 million tokens extracted from the set of verified
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Good and Featured articles on Wikipedia. The dataset is available under the Creative Commons Attribution-ShareAlike License.
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Compared to the preprocessed version of Penn Treebank (PTB), WikiText-2 is over 2 times larger and WikiText-103 is over
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110 times larger. The WikiText dataset also features a far larger vocabulary and retains the original case, punctuation
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and numbers - all of which are removed in PTB. As it is composed of full articles, the dataset is well suited for models
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that can take advantage of long term dependencies.
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Each subset comes in two different variants:
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- Raw (for character level work) contain the raw tokens, before the addition of the <unk> (unknown) tokens.
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- Non-raw (for word level work) contain only the tokens in their vocabulary (wiki.train.tokens, wiki.valid.tokens, and wiki.test.tokens).
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The out-of-vocabulary tokens have been replaced with the the <unk> token.
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### Supported Tasks and Leaderboards
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Languages
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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## Dataset Structure
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### Data Instances
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#### wikitext-103-raw-v1
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- **Size of downloaded dataset files:** 191.98 MB
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- **Size of the generated dataset:** 549.42 MB
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- **Total amount of disk used:** 741.41 MB
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An example of 'validation' looks as follows.
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```
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This example was too long and was cropped:
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{
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"text": "\" The gold dollar or gold one @-@ dollar piece was a coin struck as a regular issue by the United States Bureau of the Mint from..."
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}
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```
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#### wikitext-103-v1
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- **Size of downloaded dataset files:** 190.23 MB
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- **Size of the generated dataset:** 548.05 MB
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- **Total amount of disk used:** 738.27 MB
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An example of 'train' looks as follows.
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```
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This example was too long and was cropped:
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{
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"text": "\" Senjō no Valkyria 3 : <unk> Chronicles ( Japanese : 戦場のヴァルキュリア3 , lit . Valkyria of the Battlefield 3 ) , commonly referred to..."
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}
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```
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#### wikitext-2-raw-v1
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- **Size of downloaded dataset files:** 4.72 MB
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- **Size of the generated dataset:** 13.54 MB
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- **Total amount of disk used:** 18.26 MB
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An example of 'train' looks as follows.
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```
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This example was too long and was cropped:
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{
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"text": "\" The Sinclair Scientific Programmable was introduced in 1975 , with the same case as the Sinclair Oxford . It was larger than t..."
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}
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```
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#### wikitext-2-v1
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- **Size of downloaded dataset files:** 4.48 MB
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- **Size of the generated dataset:** 13.34 MB
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- **Total amount of disk used:** 17.82 MB
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An example of 'train' looks as follows.
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```
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This example was too long and was cropped:
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{
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"text": "\" Senjō no Valkyria 3 : <unk> Chronicles ( Japanese : 戦場のヴァルキュリア3 , lit . Valkyria of the Battlefield 3 ) , commonly referred to..."
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}
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```
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### Data Fields
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The data fields are the same among all splits.
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#### wikitext-103-raw-v1
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- `text`: a `string` feature.
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#### wikitext-103-v1
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- `text`: a `string` feature.
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#### wikitext-2-raw-v1
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- `text`: a `string` feature.
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#### wikitext-2-v1
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- `text`: a `string` feature.
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### Data Splits
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| name | train |validation|test|
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|-------------------|------:|---------:|---:|
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|wikitext-103-raw-v1|1801350| 3760|4358|
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|wikitext-103-v1 |1801350| 3760|4358|
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|wikitext-2-raw-v1 | 36718| 3760|4358|
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|wikitext-2-v1 | 36718| 3760|4358|
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## Dataset Creation
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### Curation Rationale
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Source Data
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#### Initial Data Collection and Normalization
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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#### Who are the source language producers?
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Annotations
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#### Annotation process
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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#### Who are the annotators?
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Personal and Sensitive Information
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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## Considerations for Using the Data
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### Social Impact of Dataset
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Discussion of Biases
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Other Known Limitations
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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## Additional Information
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### Dataset Curators
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[More Information Needed](https://github.com/huggingface/datasets/blob/master/CONTRIBUTING.md#how-to-contribute-to-the-dataset-cards)
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### Licensing Information
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The dataset is available under the [Creative Commons Attribution-ShareAlike License (CC BY-SA 4.0)](https://creativecommons.org/licenses/by-sa/4.0/).
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### Citation Information
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```
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@misc{merity2016pointer,
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title={Pointer Sentinel Mixture Models},
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author={Stephen Merity and Caiming Xiong and James Bradbury and Richard Socher},
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year={2016},
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eprint={1609.07843},
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archivePrefix={arXiv},
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primaryClass={cs.CL}
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}
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```
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### Contributions
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Thanks to [@thomwolf](https://github.com/thomwolf), [@lewtun](https://github.com/lewtun), [@patrickvonplaten](https://github.com/patrickvonplaten), [@mariamabarham](https://github.com/mariamabarham) for adding this dataset.
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