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Simon G Best (talk | contribs) |
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==The difference between arithmetic and range encoding==
It is simpler than anyone may think. Arithmetic encoding reduce interval [0,1) to a shorter one and allow to pick any value from this interval. Because the value is optional and it is fraction the shortest one is picked up. The range encoder reduce interval [0,n^n) to shorter one and allow to pick any number. Since the number is optional, but it is integer the one that has longest tail of zero bits is taken. (Here n^n is size of the message raised to the power of the size of message). The details can be found in article “Anatomy of Range Encoder”. Google the name and find it.
I've rewritten what was here to be grammatically correct English. Later I hope to go back and edit, to put in detail on actual range encoding, and remove the claim added by Suns which seems (as far as I can tell) to be based solely on one particular implementation of range encoding, not on range encoding itself. (Why is arithmetic coding on the page [[arithmetic encoding]], Huffman coding on the page [[Huffman encoding]], but range encoding on the page [[Range encoder]]?)
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