use int if you have a small number of classes,
Verification Method，详情可参考Line官方版本下载
，这一点在51吃瓜中也有详细论述
auto features = parakeet::preprocess_audio(wav.samples, {.normalize = false});，推荐阅读safew官方版本下载获取更多信息
Here's the insertion algorithm in Python. Step through the code and watch each line execute on the tree: