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Information Distance Revisited

Abstract : We consider the notion of information distance between two objects x and y introduced by Bennett, G\'acs, Li, Vitanyi, and Zurek [1] as the minimal length of a program that computes x from y as well as computing y from x, and study different versions of this notion. It was claimed by Mahmud [11] that the prefix version of information distance equals max(K(x|y), K(y|) + O(1) (this equality with logarithmic precision was one of the main results of the paper by Bennett, G\'acs, Li, Vitanyi, and Zurek). We show that this claim is false.
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-01982345
Contributor : Alexander Shen Connect in order to contact the contributor
Submitted on : Friday, January 17, 2020 - 1:34:50 PM
Last modification on : Friday, August 5, 2022 - 3:02:59 PM

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  • HAL Id : lirmm-01982345, version 1
  • ARXIV : 1807.11087

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Bruno Bauwens, Alexander Shen. Information Distance Revisited. 2020. ⟨lirmm-01982345⟩

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