Update README.md

README.md

@@ -17,4 +17,40 @@ configs:
         path: phd_webdataset/phd-icc.tar
       - split: phd_ccs
         path: phd_webdataset/phd-ccs.tar
----
+---
+
+# PhD Webdataset
+
+This repository contains the packaged version of [**PhD**](https://huggingface.co/datasets/AIMClab-RUC/PhD). For a detailed introduction to PhD, please visit the [official website](https://huggingface.co/datasets/AIMClab-RUC/PhD).
+
+## Overview
+
+The PhD Webdataset is designed to facilitate easy access and usage of the PhD dataset. It includes various fields in 'json' key. 
+
+## Installation
+
+Ensure you have [Hugging Face's datasets library](https://github.com/huggingface/datasets) installed. You can install it via pip:
+
+```bash
+pip install datasets
+```
+
+## Usage
+
+To load and use the PhD dataset, simply run the following code:
+
+```python
+from datasets import load_dataset
+
+phd = load_dataset("AIMClab-RUC/PhD-package")['phd_base']  # options include (phd_base, phd_sec, phd_icc, phd_ccs)
+
+# see phd[0]['json']['question']
+```
+
+The loaded dataset includes the following fields:
+- **question_id**
+- **question**
+- **answer**
+- **image**
+- **task**
+- **mode**