Information Processing Letters
Compression and Coding Algorithms
Compression and Coding Algorithms
Word assembly through minimal forbidden words
Theoretical Computer Science
DCC '08 Proceedings of the Data Compression Conference
On the Construction of an Antidictionary with Linear Complexity Using the Suffix Tree
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
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An antidictionary is in particular useful for data compression, and it consists of minimal forbidden words for a given string. We derive the average length Mn of minimal forbidden words in strings of length n under a stationary ergodic source with entropy H which takes values on a finite alphabet. For the string length n, we prove, log n/Mn = H, in probability, as n → ∞. We use the Wyner-Ziv result, with respect to connection between entropy and recurrence-time for ergodic processes, to prove the theorem. Its validity is shown by simulation results on a memoryless binary information source.