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Hi, firstly thank you for your excellent work. I had a question when I read the 'Spectral Analysis' part in your paper, as follow, ![image](https://github.com/Tiiiger/SGC/assets/58901253/a5a251f3-d13f-4949-ab3d-d75fc29653cc) ![image](https://github.com/Tiiiger/SGC/assets/58901253/2ce44cdd-22dc-4559-b6c4-5e9208644d23) I wonder what effects...

作者你好,我最近在看一些关于spectral graph theory的文章,看到了您的这篇,有些问题想请教一下。 1. non negative的限制对于滤波时有什么好处?不做这样的限制会有什么坏处?因为像一些monomial bases,是会有负的信号响应的,但是仍然能有效果。 2. BernNet在有监督的条件下很好的学习到了基底的系数,有考虑过将其推广到无监督条件下嘛? 可能因为是初学者,提的问题会不太准确,请多见谅。希望能进一步交流呀~