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AN EFFICIENT REPRESENTATION FOR PERMUTATIONS

机译:有效的排列表示

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摘要

We give a representation for permutations and we compare it with other representations. On average, our representation has lower entropy and it could be used to efficiently compress permutations. The comparison of the methods used for encoding permutations is done taking into account randomly generated permutations of order n, therefore the method would give good performance when every permutation is equally likely to be used as input for the compression (encoding) algorithm. For smaller values of n, we were able to draw the same conclusion for all permutations of order n: our representation gives better (lower) average entropy than other representations.
机译:我们给出了置换的表示,我们将其与其他陈述进行比较。平均而言,我们的代表具有较低的熵,可用于有效压缩排列。考虑到顺序N的随机生成的置换进行了用于编码排列的方法的比较,因此当每个置换同样可能用作压缩(编码)算法的输入时,该方法将提供良好的性能。对于N的较小值,我们能够为所有订单N排列提供相同的结论N:我们的代表提供比其他陈述更好(更低)的平均熵。

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