小波树与小波矩阵构造的转换
Translating Between Wavelet Tree and Wavelet Matrix Construction
摘要:
小波树(Grossi等人[SODA,2003])和小波矩阵(Claude等人[Inf.Syst.,2015])是具有许多应用的紧凑数据结构,例如文本索引或计算几何。通过继续Fischer等人最近的研究。[ALENEX,2018],我们探索了这些高度相关的数据结构的相似性和差异,重点是它们的构造。我们开发了一种数据结构来修改小波树或矩阵的构造算法,以代替另一种。这种修改是有效的,因为它不会恶化任何已知的小波树或小波矩阵构造算法的渐近时间和空间要求。
英文摘要:
The wavelet tree (Grossi et al. [SODA, 2003]) and wavelet matrix (Claude et al. [Inf. Syst., 2015]) are compact data structures with many applications such as text indexing or computational geometry. By continuing the recent research of Fischer et al. [ALENEX, 2018], we explore the similarities and differences of these heavily related data structures with focus on their construction. We develop a data structure to modify construction algorithms for either the wavelet tree or matrix to construct instead the other. This modification is efficient, in that it does not worsen the asymptotic time and space requirements of any known wavelet tree or wavelet matrix construction algorithm.
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