Well Packed – Not a Bit Too Much by Olaf Manz

Author:Olaf Manz
Language: eng
Format: epub
ISBN: 9783658347376
Publisher: Springer Fachmedien Wiesbaden

the expected value for the bit length under coding C. Thus, the expected value is the mean bit length weighted by the relative frequencies when coding with C. The more effectively an entropy coding compresses C, the smaller its expected value EC. It can be shown in general that Huffman coding is always the entropy coding with the smallest expected value.

We want to calculate the expectation value EH for the Huffman coding C = H for our example file with the six capital letters A, N, S, E, B, and I.

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