---
dataset_info:
  features:
  - name: id
    dtype: string
  - name: title
    dtype: string
  - name: context
    dtype: string
  - name: question
    dtype: string
  - name: answers
    struct:
    - name: answer_start
      sequence: int32
    - name: text
      sequence: string
  splits:
  - name: train
    num_bytes: 79301631
    num_examples: 87588
  - name: validation
    num_bytes: 5239631
    num_examples: 5285
  - name: test
    num_bytes: 5233006
    num_examples: 5285
  download_size: 19809326
  dataset_size: 89774268
configs:
- config_name: default
  data_files:
  - split: train
    path: data/train-*
  - split: validation
    path: data/validation-*
  - split: test
    path: data/test-*
task_categories:
- question-answering
language:
- en
size_categories:
- 10K<n<100K
---

## Clean SQuAD v1

This is a refined version of the [SQuAD v1](https://huggingface.co/datasets/rajpurkar/squad) dataset. It has been preprocessed to ensure higher data quality and usability for NLP tasks such as Question Answering.

## Description

The **Clean SQuAD v1** dataset was created by applying preprocessing steps to the original SQuAD v1 dataset, including:
- **Trimming whitespace**: All leading and trailing spaces have been removed from the `question` field.
- **Minimum question length**: Questions with fewer than 12 characters were filtered out to remove overly short or uninformative entries.
- **Balanced validation and test sets**: The validation set from the original SQuAD dataset was split 50-50 into new validation and test sets.

This preprocessing ensures that the dataset is cleaner and more balanced, making it suitable for training and evaluating machine learning models on Question Answering tasks.

## Dataset Structure

The dataset is divided into three subsets:

1. **Train**: The primary dataset for model training.
2. **Validation**: A dataset for hyperparameter tuning and model validation.
3. **Test**: A separate dataset for evaluating final model performance.

## Data Fields

Each subset contains the following fields:
- `id`: Unique identifier for each question-context pair.
- `title`: Title of the article the context is derived from.
- `context`: Paragraph from which the answer is extracted.
- `question`: Preprocessed question string.
- `answers`: Dictionary containing:
  - `text`: The text of the correct answer(s).
  - `answer_start`: Character-level start position of the answer in the context.

## Usage

The dataset is hosted on the Hugging Face Hub and can be loaded with the following code:

```python
from datasets import load_dataset

dataset = load_dataset("decodingchris/clean_squad_v1")
```