Abstract
In this paper we address the problem of searching in LZW compressed text directly, and present a new algorithm for finding multiple patterns by simulating the move of the Aho-Corasick pattern matching machine. The new algorithm finds all occurrences of multiple patterns whereas the algorithm proposed by Amir, Benson, and Farach finds only the first occurrence of a single pattern. The new algorithm runs in O(n + m2 + r) time using O(n + m2) space, where n is the length of the compressed text, m is the length of the total length of the patterns, and r is the number of occurrences of the patterns. We implemented a simple version of the algorithm, and showed that it is approximately twice faster than a decompression followed by a search using the Aho-Corasick machine.
| Original language | English |
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| Pages (from-to) | 103-112 |
| Number of pages | 10 |
| Journal | Data Compression Conference Proceedings |
| Publication status | Published - 1998 |
| Event | Proceedings of the 1998 Data Compression Conference, DCC - Snowbird, UT, USA Duration: Mar 30 1998 → Apr 1 1998 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications