Abstract
The retrieval capabilities of the signature file access method have become very attractive for data processing applications dealing with both formatted and unformatted data. Multimedia databases should also take advantage of this method, provided convenient storage structures for organizing signature files are available. In this paper a high performance dynamic signature file organization is proposed, combining the latest developments in storage structures (dynamic partitioning schemes) with the classical multilevel organizations in an efficient and effective way. We call the method the parametric weighted filter (PWF) and the performance analysis shows its superiority over previous methods. Finally, refinements are proposed that can further improve the scheme and that are worth further investigation.
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