In-Place versus Re-Build versus Re-Merge: Index Maintenance Strategies for Text Retrieval Systems

Lester, N., Williams, H.E. and Zobel, J.

    Indexes are the key technology underpinning efficient text search. A range of algorithms have been developed for fast query evaluation and for index creation, but update algorithms for high-performance indexes have not been evaluated or even fully described. In this paper, we explore the three main alternative strategies for index update: in-place update, indexmerging, and complete re-build. Our experiments with large volumes of web data show that re-merge is for large numbers of updates the fastest approach, but in-place update is suitable when the rate of update is low or buffer size is limited.
Cite as: Lester, N., Williams, H.E. and Zobel, J. (2004). In-Place versus Re-Build versus Re-Merge: Index Maintenance Strategies for Text Retrieval Systems. In Proc. Twenty-Seventh Australasian Computer Science Conference (ACSC2004), Dunedin, New Zealand. CRPIT, 26. Estivill-Castro, V., Ed. ACS. 15-22.
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