Artificial intelligence is the science and engineering of making intelligent machines. Intelligent computer program, referred to as ai, is a simulation of the information process of human consciousness and thinking. Artificial intelligence is not human intelligence, but it can think like human beings, or it may exceed human intelligence. Mathematics is generally regarded as the basic science of many disciplines. Mathematics has also entered the field of language and thinking, and the discipline of artificial intelligence must also borrow mathematical tools. Practical applications of artificial intelligence: machine vision, fingerprint recognition, face recognition, retina recognition, iris recognition, palmprint recognition, expert system, automatic planning, intelligent search, theorem proving, games, automatic programming, intelligent control, robotics, language and image understanding, genetic programming, etc. At present, artificial intelligence is also divided into bottom-up AI and top-down AI.