Update dataset card with comprehensive documentation

README.md

@@ -1,104 +1,110 @@
 ---
 language:
-- vi
+  - vi
 license: mit
 size_categories:
-- 100<n<1K
+  - 100<n<1K
 task_categories:
-- text-generation
-- text-classification
+  - text-generation
+  - text-classification
 tags:
-- legal
-- vietnamese
-- law
-- vietnam
-- corpus
-- legislation
+  - legal
+  - vietnamese
+  - law
+  - vietnam
+  - corpus
+  - legislation
 pretty_name: Vietnamese Legal Corpus
-dataset_info:
-  features:
-  - name: id
-    dtype: string
-  - name: filename
-    dtype: string
-  - name: title
-    dtype: string
-  - name: type
-    dtype: string
-  - name: content
-    dtype: string
-  - name: content_length
-    dtype: int32
-  splits:
-  - name: '2021'
-    num_bytes: 14282751
-    num_examples: 110
-  - name: '2023'
-    num_bytes: 24002999
-    num_examples: 208
-  - name: '2026'
-    num_bytes: 32429305
-    num_examples: 318
-  download_size: 20701121
-  dataset_size: 70715055
-configs:
-- config_name: default
-  data_files:
-  - split: '2021'
-    path: data/2021-*
-  - split: '2023'
-    path: data/2023-*
-  - split: '2026'
-    path: data/2026-*
 ---
 
 # Vietnamese Legal Corpus (UTS_VLC)
 
-A comprehensive dataset of Vietnamese laws and legal codes.
+A comprehensive dataset of Vietnamese laws and legal codes, maintained by [Underthesea NLP](https://github.com/undertheseanlp).
 
 ## Dataset Description
 
-This dataset contains 318 Vietnamese legal documents including:
-- **6 Codes (Bo luat)**: Civil Code, Criminal Code, Labor Code, etc.
-- **312 Laws (Luat)**: Various laws from 1945 to 2024
+This dataset contains Vietnamese legal documents including the Constitution, Codes (Bộ luật), and Laws (Luật) from 1945 to 2025.
 
-## Splits
+### Splits
 
 | Split | Documents | Description |
 |-------|-----------|-------------|
-| 2026  | 318       | Full corpus as of January 2026 |
+| 2021  | 110       | Original corpus with full text |
+| 2023  | 208       | Expanded corpus with processed text |
+| 2026  | 318       | Latest corpus with 2022-2025 laws |
+
+### Document Types
+
+- **Constitution (Hiến pháp)**: 1 document (2013 Constitution)
+- **Codes (Bộ luật)**: 6 major codes
+  - Civil Code 2015 (Bộ luật Dân sự)
+  - Civil Procedure Code 2015 (Bộ luật Tố tụng Dân sự)
+  - Criminal Code 2015 (Bộ luật Hình sự)
+  - Criminal Procedure Code 2015 (Bộ luật Tố tụng Hình sự)
+  - Maritime Code 2015 (Bộ luật Hàng hải)
+  - Labor Code 2019 (Bộ luật Lao động)
+- **Laws (Luật)**: 300+ laws covering various domains
+
+### Recent Laws (2022-2025)
+
+The 2026 split includes laws passed by the 15th National Assembly:
+- **2022**: 8 laws (Inspection, Anti-Money Laundering, IP, Insurance, Cinema, etc.)
+- **2023**: 12 laws (E-Transactions, Consumer Protection, Bidding, Telecoms, Housing, etc.)
+- **2024**: 24 laws (Land, Credit Institutions, Roads, Data, Electricity, Social Insurance, etc.)
+- **2025**: 50+ laws including landmark legislation:
+  - **AI Law** (Luật Trí tuệ nhân tạo) - First AI law in Vietnam
+  - **E-commerce Law** (Luật Thương mại điện tử)
+  - **Digital Transformation Law** (Luật Chuyển đổi số)
+  - **Personal Data Protection Law** (Luật Bảo vệ dữ liệu cá nhân)
 
 ## Features
 
-- `id`: Document identifier
-- `filename`: Source filename
-- `title`: Vietnamese title
-- `title_en`: English title
-- `type`: "code" or "law"
-- `year`: Year of enactment
-- `document_number`: Official document number
-- `effective_date`: Date when law became effective
-- `status`: Current status (Active/Amended/Repealed)
-- `url`: Source URL
-- `has_content`: Whether full text is available
-- `content`: Full text content
-- `content_length`: Character count
+| Feature | Type | Description |
+|---------|------|-------------|
+| id | string | Document identifier (slug) |
+| filename | string | Source filename |
+| title | string | Vietnamese title |
+| type | string | Document type: "code", "law", or "constitution" |
+| content | string | Full text content |
+| content_length | int32 | Character count |
 
 ## Usage
 
 ```python
 from datasets import load_dataset
 
-# Load the 2026 split
-ds = load_dataset("undertheseanlp/UTS_VLC", split="2026")
+# Load all splits
+ds = load_dataset("undertheseanlp/UTS_VLC")
 
-# Filter only documents with content
-ds_with_content = ds.filter(lambda x: x["has_content"])
+# Load specific split
+ds_2026 = load_dataset("undertheseanlp/UTS_VLC", split="2026")
 
-# Get all codes
-codes = ds.filter(lambda x: x["type"] == "code")
+# Filter by type
+codes = ds_2026.filter(lambda x: x["type"] == "code")
+laws = ds_2026.filter(lambda x: x["type"] == "law")
+
+# Search by title
+land_law = ds_2026.filter(lambda x: "Đất đai" in x["title"])
 ```
 
+## Statistics
+
+| Metric | 2021 | 2023 | 2026 |
+|--------|------|------|------|
+| Documents | 110 | 208 | 318 |
+| Total Characters | ~14M | ~21M | ~24M |
+| Codes | 6 | 6 | 6 |
+| Laws | 104 | 202 | 312 |
+
+## Data Source
+
+Documents were collected from [Thu Vien Phap Luat](https://thuvienphapluat.vn/), the official Vietnamese legal document database.
+
+## References
+
+- [Vietnam's System of Legal Documents](https://vietnamlawmagazine.vn/vietnams-system-of-legal-documents-5017.html)
+- [National Assembly of Vietnam](https://quochoi.vn/)
+
 ## License
 
 MIT License
@@ -106,7 +112,7 @@ MIT License
 ## Citation
 
 ```bibtex
-@dataset{uts_vlc_2026,
+@dataset{uts_vlc,
   title={Vietnamese Legal Corpus},
   author={Underthesea NLP},
   year={2026},
@@ -114,3 +120,8 @@ MIT License
   url={https://huggingface.co/datasets/undertheseanlp/UTS_VLC}
 }
 ```
+
+## Maintainers
+
+- [Underthesea NLP](https://github.com/undertheseanlp)
+- Contact: underthesea.nlp@gmail.com