diff --git a/NLP_recommend/Building deep retrieval models.md b/NLP_recommend/Building deep retrieval models.md
index 1ad5bb16957c89f20a1f1cee49937330d762a366..cc6ab1b9ec195edb9234ef46fb35159710736069 100644
--- a/NLP_recommend/Building deep retrieval models.md	
+++ b/NLP_recommend/Building deep retrieval models.md	
@@ -325,4 +325,4 @@ accuracy = three_layer_history.history["val_factorized_top_k/top_100_categorical
 print(f"Top-100 accuracy: {accuracy:.2f}.")
 ```
 
-代码链接: 
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+代码链接: https://codechina.csdn.net/csdn_codechina/enterprise_technology/-/blob/master/NLP_recommend/Building%20deep%20retrieval%20models.ipynb
\ No newline at end of file