Question about Casia-webface dataset and bugs about prepare_data.py

Thanks for your great work! When I downloaded the casia-webface dataset from the link that our repository gave. I found some `.bin` files like lfw.bin. My question is what this lwf.bin file means?
I know that images are stored in `.bin` files. **But what is the relationship between the lfw dataset and this `lfw.bin` file?**

Another question about prepare_data.py. In this file, it mentions in line 14
`bin_files = ['agedb_30', 'cfp_fp', 'lfw', 'calfw', 'cfp_ff', 'cplfw', 'vgg2_fp']`
But from the download file, I don't have vgg2_fp.bin and an error occurs
`FileNotFoundError: [Errno 2] No such file or directory: '/data/zhaohongbo/Github/amnesic-face-recognition/Face-Transformer/data/faces_webface_112x112/vgg2_fp.bin'`
How to solve this problem?
**Is vgg2_fp.bin in the casia-webface dataset?**

感谢您的出色工作！当我从我们的资源库提供的链接下载 casia-webface 数据集时。我发现了一些 `.bin` 文件，比如 lfw.bin。我的问题是这个 lwf.bin 文件是什么意思？
我知道图像存储在`.bin`文件中。**但是，lfw 数据集和这个 `lfw.bin` 文件之间有什么关系**

另一个问题是关于 prepare_data.py。在这个文件中，第 14 行提到 `bin_files = ['agedb_30', 'cfp_fp', 'lfw', 'calfw', 'cfp_ff', 'cplfw', 'vgg2_fp']` 但是从下载文件中，我没有 vgg2_fp.bin，而且出现了一个错误 `FileNotFoundError：[Errno 2] No such file or directory: '/data/zhaohongbo/Github/amnesic-face-recognition/Face-Transformer/data/faces_webface_112x112/vgg2_fp.bin'`

如何解决这个问题？

**vgg2_fp.bin是否在 casia-webface 数据集中？**