Update README.md

README.md

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----
-license: apache-2.0
----
+---
+license: apache-2.0
+task_categories:
+- image-classification
+- text-to-image
+- token-classification
+language:
+- zh
+tags:
+- chinese
+- ancient-script
+pretty_name: 'CHUBS: A Large-Scale Dataset of Chu Bamboo Slip Script'
+size_categories:
+- 100K<n<1M
+---
+
+# CHUBS: A Large-Scale Dataset of Chu Bamboo Slip Script
+
+<div align="center">
+  <a href="https://github.com/THUNLP/Chujian">Code</a> | <a href="">Paper (upcoming)</a>
+</div>
+
+## Introduction
+
+This is a large-scale dataset of Chu bamboo slip (CBS, Chinese: 楚简, chujian) script, an ancient Chinese script used during the Spring and Autumn period over 2,000 years ago. This dataset consists of two parts: 
+
+1. The main dataset where each example is an image and the corresponding text label. This part is contained in the `glyphs.zip` ZIP file.
+2. A POS tagging dataset where each example is a sentence and POS annotations (using the BIO format). This part is contained under the `pos-tagging-data` directory.
+
+This data is compiled to foster applications of NLP methods in the study of Chu bamboo slip script, and possibly other forms of ancient Chinese.
+
+## Data Source
+
+The sources for this dataset are shown in the following list.
+
+| **Source name**            | **Chinese name** | **# documents** | **# slips** | **# characters** |
+|----------------------------|------------------|-----------------|-------------|------------------|
+| Tsinghua University Slips   | 清华简           | 50              | 1,402       | 31,468           |
+| Shanghai Museum Slips       | 上博简           | 60              | 881         | 25,795           |
+| Baoshan Slips               | 包山简           | 4               | 337         | 12,647           |
+| Guodian Slips               | 郭店简           | 18              | 705         | 11,865           |
+| Geling Slips                | 葛陵简           | 8               | 743         | 6,209            |
+| Zenghouyi Slips             | 曾侯乙简         | 4               | 198         | 6,016            |
+| Jiudian Slips               | 九店简           | 2               | 232         | 2,956            |
+| Wangshan Slips              | 望山简           | 3               | 273         | 2,218            |
+| Changtaiguan Slips          | 长台关简         | 3               | 148         | 1,504            |
+| Zidanku Silk                | 子弹库帛         | 7               | 7           | 1,471            |
+| Yangtianhu Slips            | 仰天湖简         | 1               | 42          | 335              |
+| Wulipai Slips               | 五里牌简         | 1               | 18          | 109              |
+| Xiyangpo Slips              | 夕阳坡简         | 1               | 2           | 54               |
+| Ynagjiawan Slips            | 杨家湾简         | 1               | 38          | 41               |
+| Caojiagang Slips            | 曹家岗简         | 1               | 7           | 34               |
+| **Total**                   |                  | **164**         | **5,033**   | **102,722**      |
+
+## Copyright
+
+As mentioned in the paper, the main CHUBS dataset is extracted and processed from existing openly available textbooks and quality-checked by our team. Compiling and analyzing such data is a common practice within the paleography field in ancient Chinese script, and we have consulted with legal experts to make sure that this data can be released under a permissive license such as Apache 2.0. The POS tagging data is annotated by our team, and also has no legal concerns related to its usage.