Computer Science > Data Structures and Algorithms
[Submitted on 19 Jul 2016 (v1), last revised 2 Nov 2016 (this version, v3)]
Title:Distance Sensitive Bloom Filters Without False Negatives
View PDFAbstract:A Bloom filter is a widely used data-structure for representing a set $S$ and answering queries of the form "Is $x$ in $S$?". By allowing some false positive answers (saying "yes" when the answer is in fact `no') Bloom filters use space significantly below what is required for storing $S$. In the distance sensitive setting we work with a set $S$ of (Hamming) vectors and seek a data structure that offers a similar trade-off, but answers queries of the form "Is $x$ close to an element of $S$?" (in Hamming distance). Previous work on distance sensitive Bloom filters have accepted false positive and false negative answers. Absence of false negatives is of critical importance in many applications of Bloom filters, so it is natural to ask if this can be also achieved in the distance sensitive setting. Our main contributions are upper and lower bounds (that are tight in several cases) for space usage in the distance sensitive setting where false negatives are not allowed.
Submission history
From: Johan von Tangen Sivertsen M.Sc [view email][v1] Tue, 19 Jul 2016 08:20:26 UTC (21 KB)
[v2] Wed, 20 Jul 2016 11:41:32 UTC (29 KB)
[v3] Wed, 2 Nov 2016 14:47:57 UTC (46 KB)
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