Update README.md

README.md

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 license: mit
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 # AlignScore
-This is the repository for AlignScore, a metric for automatic factual consistency evaluation of text pairs. The metric is introduced in 
+This is the repository for AlignScore and its checkpoints, a metric for automatic factual consistency evaluation of text pairs. The metric is introduced in 
 
 [AlignScore: Evaluating Factual Consistency with a Unified Alignment Function](https://arxiv.org/abs/2305.16739)
 
@@ -10,6 +10,8 @@ Yuheng Zha, Yichi Yang, Ruichen Li and Zhiting Hu
 
 ACL 2023
 
+Code is at https://github.com/yuh-zha/AlignScore
+
 What is factual consistency and its evaluation?
 * **Facutual Consistency:** For a given text pair (**a**, **b**), they are considered factual consistent if 1) all the information in **b** is also present in **a**; 2) **b** does not contradict **a**.
 * **Evaluation:**  Show the degree of factual consistency between the context (text **a**) and the claim (text **b**).