Update url.md

README.md

@@ -52,7 +52,7 @@ pip install -r requirements.txt
 
 ## 数据集
 
-我们考虑到imagenet数据集比较庞大，为了用户可以使用OneFlow快速进行Resnet50的训练验证，采用mini-imagenet小数据集。原始数据集快速下载通道[imagenet](http://113.200.138.88:18080/aidatasets/project-dependency/imagenet-2012)如果需要原始数据需要参考该链接https://github.com/Oneflow-Inc/models/tree/main/Vision/classification/image/resnet50#prepare-ofrecord-for-the-full-imagenet-dataset进行转换为ofrecord 
+我们考虑到imagenet数据集比较庞大，为了用户可以使用OneFlow快速进行Resnet50的训练验证，采用mini-imagenet小数据集：[tiny-imagenet-200](http://cs231n.stanford.edu/tiny-imagenet-200.zip)。原始数据集下载通道[imagenet-2012](https://image-net.org/download.php)，如果需要原始数据需要参考该链接https://github.com/Oneflow-Inc/models/tree/main/Vision/classification/image/resnet50#prepare-ofrecord-for-the-full-imagenet-dataset进行转换为ofrecord 
 
 
     OFRECORD_PATH="./mini-imagenet/ofrecord"