I am a graduate student majoring in computer science, and I have three research directions: artificial intelligence video image processing, big data and software framework. Which of these three is better? The three majors you mentioned are all popular now, and there are more than N people doing them, and all of them have made certain achievements. If you want to learn technology, choose what you like. If you don't want to work in the future, you can switch to management, software framework and big data. After all, there are too many young people graduating from the computer industry every year.