update Readme

README.md

@@ -7,4 +7,46 @@ tags:
 - legal
 size_categories:
 - 10K<n<100K
----
+---
+## Vi-Ner
+
+### Dataset Description
+ner_tags: a list of classification labels (int). Full tagset with indices:
+
+```python
+{'B-DATETIME': 0,
+ 'B-LOCATION': 1,
+ 'B-ORGANIZATION': 2,
+ 'B-PERSON': 3,
+ 'I-DATETIME': 4,
+ 'I-LOCATION': 5,
+ 'I-ORGANIZATION': 6,
+ 'I-PERSON': 7,
+ 'O': 8}
+```
+### Data Splits
+
+|  name   |train|validation|test|
+|---------|----:|---------:|---:|
+|  Vi-Ner |19255|      2407|2407|
+### Example
+
+An example of 'train' looks as follows.
+
+```
+{
+    {'tokens': "['NSƯT', 'Hồng', 'Liên', '(trái)', 'đến', 'chúc', 'mừng', 'Thu', 'Trang..']",
+    'ner_tags': "['B-PERSON', 'I-PERSON', 'I-PERSON', 'O', 'O', 'O', 'O', 'B-PERSON', 'I-PERSON']",
+    'ner_idx': '[3, 7, 7, 8, 8, 8, 8, 3, 7]'}
+}
+```
+
+### Usage
+
+python
+```
+import datasets
+vi_ner = datasets.load_dataset('Minggz/Vi-Ner')
+vi_ner
+
+```