Name
Abstract | ||
|---|---|---|
Estimating set similarity is a central problem in many computer applications. In this paper we introduce the Odd Sketch, a compact binary sketch for estimating the Jaccard similarity of two sets. The exclusive-or of two sketches equals the sketch of the symmetric difference of the two sets. This means that Odd Sketches provide a highly space-efficient estimator for sets of high similarity, which is relevant in applications such as web duplicate detection, collaborative filtering, and association rule learning. The method extends to weighted Jaccard similarity, relevant e.g. for TF-IDF vector comparison. We present a theoretical analysis of the quality of estimation to guarantee the reliability of Odd Sketch-based estimators. Our experiments confirm this efficiency, and demonstrate the efficiency of Odd Sketches in comparison with $b$-bit minwise hashing schemes on association rule learning and web duplicate detection tasks. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1145/2566486.2568017 | WWW |
Keywords | Field | DocType |
association rule learning,odd sketch,compact binary sketch,association rule,high similarity,weighted jaccard similarity,tf-idf vector comparison,efficient estimation,odd sketches,odd sketch-based estimator,jaccard similarity,bloom filters | Data mining,Symmetric difference,Computer science,Theoretical computer science,Artificial intelligence,Jaccard index,Sketch,Bloom filter,World Wide Web,Collaborative filtering,Association rule learning,Hash function,Machine learning,Estimator | Conference |
Citations | PageRank | References |
19 | 0.66 | 18 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Michael Mitzenmacher | 1 | 7386 | 730.89 |
| Rasmus Pagh | 2 | 1344 | 86.08 |
| Ninh Pham | 3 | 169 | 7.68 |