Hi, I am Chen Liang, the first author of the paper. Thanks for pointing out the Latex problem and sorry for the inconvenience.

We are trying to fix the Latex problem and submit a replacement to ArXiv soon. In the meantime, we hosted the PDF version of the paper on another link:

https://www.researchgate.net/profile/Chen_Liang14/publicatio...

Thanks and look forward to your feedbacks and suggestions :)