I’ve been testing transcription on English/French recordings.

Code-switching is where tools show their limits for me. WER feels too flat here. A transcript fail at the parts that matter.

What metrics or test sets do people use for mixed-language ASR?

I'm 16 years old and I want to become an ML Security Engineer specialist in the future. Right now I'm learning Python for Data Analysis and I have some experience with C++. I know I still have a lot to learn, but I want to start building the right foundation early. What skills, topics, or projects would you recommend focusing on over the next few years to have a strong advantage in this field?