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Shannon-Fano
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Data compression in fields, Shannon Fano coding, named Claude Shannon and Robert van Nuo, is a technique to construct prefix codes based on a set of symbols and their probabilities (estimation or measurement). In the most ideal sense, it can not achieve the lowest possible expected codeword length, like Huffman coding; but unlike Huffman coding, it does not guarantee whether all codeword lengths meet its theoretical ideal bit. In 1948, Shannon introduced the field information theory and put forward the technology. The method was attributed to van Nuo, who later published it as a technical report. [1] Shannon Fano coding should not be confused with Shannon coding. The coding method uses the silent coding theorem of proveshannon, or the prelude of arithmetic coding with Shannon Fano Elias coding (also known as Elias coding). In Shannon Fano coding, these symbols are arranged in the most unlikely order, and then divided into two settings. The total probability is as close as possible to the same situation. All symbols are then assigned; the first digit of its code is in the first set of symbol reception & quot; 0 & quot; and in the second set of symbol reception & quot; 1 & quot;. As long as any number with more than one member set, these sets repeat the same process to determine their code's consecutive numbers. When the group has been reduced to a symbol, of course, this means that the code that completes symbol does not form any prefix for other symbol code.
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