A Self-index on Block Trees
A Self-index on Block Trees
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DOI:
10.1007/978-3-319-67428-5_24
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发表时间:
2016
期刊:
影响因子:
1.1
通讯作者:
G. Navarro
中科院分区:
文献类型:
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作者:
G. Navarro
The Block Tree is a recently proposed data structure that reaches compression close to Lempel-Ziv while supporting efficient direct access to text substrings. In this paper we show how a self-index can be built on top of a Block Tree so that it provides efficient pattern searches while using space proportional to that of the original data structure. More precisely, if a Lempel-Ziv parse cuts a text of length $n$ into $z$ non-overlapping phrases, then our index uses $O(z\log(n/z))$ words and finds the $occ$ occurrences of a pattern of length $m$ in time $O(m\log n+occ\log^\epsilon n)$ for any constant $\epsilon>0$.
DOI:
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发表时间:
2003-01
期刊:
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影响因子:
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作者:
R. Grossi;Ankur Gupta;J. Vitter
通讯作者:
R. Grossi;Ankur Gupta;J. Vitter
DOI:
10.1137/1.9781611972870.6
发表时间:
2006-09
期刊:
ArXiv
影响因子:
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作者:
Daisuke Okanohara;K. Sadakane
通讯作者:
Daisuke Okanohara;K. Sadakane