Details about this assignment can be found on the course webpage, under Assignment #1 of Spring 2019.
note：Good job! 有个小细节，要填的代码块里面的pass在填上你的代码之后删掉好一些。虽然也没有什么影响，但是留下来不是很好看。
Good job! Your results and picture are convincing and solid. A detail about implemention of soft thresholding is attached in '.ipynb' file.