信息英语作业ljc.doc

姓名：李建成 学号：030840904 ? Writing AI and Pattern recognition AI (Artificial Intelligence) is a new technology for science, which is used for simulating, extension and expansion of the human intelligence theories, methods, technologies and application system. Currently most of the definition of AI can be divided into four categories, namely machine think like a person, act like a person, the rational thinking and rational action. Here the action should be generalized to understand for action, or making decisions, instead of body movement. AI is a challenging job of science. It is an edge discipline, which belongs to the natural science and social science. the person who want to learn it well must know computer knowledge, psychology and philosophy. AI is to include a very wide range of science, it is composed by different areas, such as machine learning, computer vision, etc., Overall,one of the main objectives of the AI research is to make the machine capable of some complex jobs which human intelligence is usually required to complete . At present, the computer is the main material machine by which inteligence techniques can be achieved to research the AI. In the field of computer science, AI includs Robotics, speech recognition, image recognition, natural language processing and expert systems. Unfortunately, the computer still can not use the natural forms of informationdirectly and flexibly which human can, such as text, images, colors, natural scenery, sound, voice, etc. And this is currently a hot spot of pattern recognition field. Pattern recognition refers to the processing and analysis of various forms of information of the characterization of things or phenomena, so that it is to describe, to identify, to cassify, and to explain the things or phenomena. It is an important part of the information science and artificial intelligence. Its main application areas are image analysis and processing, speech recognit