数学基础

https://www.bilibili.com/video/BV1gQ4y1E7iy?spm_id_from=333.788.videopod.episodes&vd_source=84c6248eddb324af82e41d582aee0877

pytorch

https://www.bilibili.com/video/BV1hE411t7RN/?spm_id_from=333.1387.homepage.video_card.click&vd_source=84c6248eddb324af82e41d582aee0877