Get unexpected result

[fickleee]

Hi there 👋, I had some problems running your code and I was wondering if I was right to get this result when running the original code directly, it doesn't seem to work well. I tried to change the values of the hyperparameters, such as epoch, depth, and also changed different models, but the results were as shown below, and the prediction and the true data were very different. Can you tell me what I should do? Thank you very much!