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| Title | New Algorithms on Wavelet Trees and Applications to Information Retrieval |
| Authors | Travis Gagie, Gonzalo Navarro, Simon Puglisi |
| Publication date | 2012 |
| Abstract |
Wavelet trees are widely used in the representation of sequences, permutations, text collections, binary relations, discrete points, and other succinct data structures. We show, however, that this still falls short of exploiting all of the virtues of this versatile data structure. In particular we show how to use wavelet trees to solve fundamental algorithmic problems such as range quantile queries, range next value queries, and range intersection queries. We explore several applications of these queries in Information Retrieval, in particular document retrieval in hierarchical and temporal documents, and in the representation of inverted lists. |
| Pages | 25-41 |
| Volume | 426-427 |
| Journal name | Theoretical Computer Science |
| Publisher | Elsevier Science (Amsterdam, The Netherlands) |
| Reference URL |
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