Claude elwood Shannon (1965438+April 30, 2006-February 24, 2006, 5438+0) is an American mathematician and the founder of information theory. 1936 received a bachelor's degree from the University of Michigan. 1940 received master's and doctor's degrees from Massachusetts Institute of Technology, 194 1 year worked in Bell Laboratories.
Shannon put forward the concept of information entropy, which laid the foundation of information theory and digital communication. The main thesis is the master thesis of 1938, the symbolic analysis of relay and switch circuit, the mathematical principle of communication of 1948, and the communication under noise of 1949.
The life of the character
Shannon began to think about information theory and effective communication system from 65438 to 0940 when she was in Princeton Institute for Advanced Studies. After eight years' efforts, Shannon published a far-reaching paper "Mathematical Principles of Communication" in Bell System Technology Journal in June of 1948 and June of 10.
1949, Shannon published another famous paper "Communication under Noise" in this magazine. In these two papers, Shannon clarified the basic problems of communication, gave the model of communication system, put forward the mathematical expression of information quantity, and solved a series of basic technical problems such as channel capacity, source statistical characteristics, source coding, channel coding and so on. These two papers became the basic works of information theory.
1948, the epoch-making Mathematical Theory of Communication is divided into two parts, which were published in Bell System Technology Journal in July and June of 10 respectively. This paper systematically discusses the definition of information, how to quantify information and how to encode information better. In these studies, probability theory is an important tool used by Shannon. Shannon also put forward the concept of information entropy to measure the uncertainty of news.
Shannon published another important paper "Communication Theory of Secret Systems" from 65438 to 0949. Based on this work practice, its significance lies in turning secret communication from art to science.