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| Abstract |
Recently the compressed pattern matching problem has attracted special concern, where the goal is to find a pattern in a compressed text without decompression. In previous work, we proposed an Aho-Cor...asick (AC) type algorithm for searching in text files compressed by the so-called byte pair encoding (BPE). The searching time is reduced at the same rate as the compression ratio compared with AC. In this paper, we show a Boyer-Moore (BM) type algorithm for pattern matching in BPE compressed files. Experimental results show that the algorithm runs about 1.5 ∼ 3.0 times faster than the exact match routines based on the BM algorithm in the software package Agrep, which is known as the fastest pattern matching tool.show more
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