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---
configs:
- config_name: uncased
data_files:
- path:
- uncased.jsonl.zst
split: train
default: true
- config_name: cased
data_files:
- path:
- cased.jsonl.zst
split: train
language:
- en
tags:
- grammar
- linguistics
- NLP
license: odc-by
task_categories:
- feature-extraction
---
# Noun Phrases Dataset
This dataset contains noun phrases extracted from [allenai/c4](https://huggingface.co/datasets/allenai/c4).
It includes two configurations: **uncased** and **cased**, with 1 895 908 and 2 000 002 entries, respectively.
### JSONL Fields
Each entry contains:
- **noun_phrase:** The extracted noun phrase.
- **count:** Frequency of occurrence.
#### Example Rows
```json
{"noun_phrase": "ship invoices", "count": 1}
{"noun_phrase": "\"river", "count": 1}
{"noun_phrase": "no boiler system", "count": 1}
```
### Construction
- **Cased Data:** Original noun phrases with preserved casing.
- **Uncased Data:** Constructed by normalizing cased data to lowercase, aggregating counts for identical phrases, and retaining the original phrase with the highest count.
### Preprocessing and Extraction
- [**Preprocessing:**](https://textacy.readthedocs.io/en/latest/api_reference/preprocessing.html) Unicode normalization, bracket removal, bullet point standardization, quotation mark normalization, and whitespace normalization.
- [**SpaCy:**](https://spacy.io/) Noun phrase extraction using the `"en_core_web_sm"` model. Articles such as "a" or "the" were removed.
### Original Data Source
The C4 dataset is a cleaned version of the Common Crawl dataset, providing a comprehensive source of English text for linguistic analysis and NLP tasks.
### Applications
Suitable for grammar analysis, linguistic studies, and natural language processing (NLP) tasks.
### Dataset Details
- **Language:** English (`en`)
- **Licence:** Open Data Commons License |