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- W2550279822 abstract "Abstract While algorithm M (presented in A Memory-Efficient Huffman Adaptive Coding Algorithm for Very Large Sets of Symbols, by Steven Pigeon & Yoshua Bengio, Universite de Montreal technical report #1081 [1]) converges to the entropy of the signal, it also assumes that the characteristics of the signal are stationary, that is, that they do not change over time and that successive adjustments, ever decreasing in their magnitude, will lead to a reasonable approximation of the entropy. While this is true for some data, it is clearly not true for some other. We present here a modification of the M algorithm that allows negative updates. Negative updates are used to maintain a window over the source. Symbols enter the window at its right and will leave it at its left, after w steps (the window width). The algorithm presented here allows us to update correctly the weights of the symbols in the symbol tree. Here, we will also have negative migration or demotion , while we only had positive migration or" @default.
- W2550279822 created "2016-11-30" @default.
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- W2550279822 date "1997-01-01" @default.
- W2550279822 modified "2023-10-01" @default.
- W2550279822 title "A Memory-Efficient Adaptive Huffman Coding Algorithm for Very Large Sets of Symbols Revisited" @default.
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