Artificial intelligence, the abbreviation is AI. It is focus on research and develops the theory, method, techniques and application for simulating and extending of human intelligence. AI is a branch of computer science, it attempts to understand the essence of intelligence, and finally produce a new machine which can respond like a human. The researches in that field include robotics, speech recognition, image recognition, natural language processing and expert systems.

• The practical application
  

Machine vision, fingerprint recognition, face recognition, retina recognition, iris recognition, palm print recognition, expert systems, intelligent search, theorem proving, gamming, automatic programming, as well as aerospace applications.

• Subject field
  

Artificial intelligence is an interdisciplinary, belongs to both social science and natural science.

• Related disciplines
  

Include philosophy, cognitive science, mathematics, neurophysiology, psychology, computer science, information theory, control theory, uncertainty theory and bionics.

• Research field
  

Natural language processing, knowledge representation, intelligent search, reasoning, planning, machine learning, knowledge acquisition, perception problems, pattern recognition, logic programming, soft computing, artificial life, neural networks, complex systems, genetic algorithms and the way humans think.

• Security issue
  

Scientists are still researching on AI. However, some scholars believe that to make the computer have IQ is very dangerous, it may against human beings. The hidden dangers also occurred in many films.

There are two way can achieve AI on computer. One is the traditional programming techniques, which can make system present the intelligence. But we don’t consider whether the method generate by system is the same as human beings. This is called Engineering approach. Some achievements like character recognition and computer chess are using Engineering approach. Another one is modeling approach. It use genetic algorithm and artificial neural network achieve AI.