6 papers
Unclustered BWTs of any Length over Non-Binary Alphabets
Gabriele Fici, Estéban Gabory, Giuseppe Romana +1
We prove that for every integer and for every alphabet of size , there exists a necklace of length whose Burrows-Wheeler Transform (BWT) is completely…
Bit catastrophes for the Burrows-Wheeler Transform
Sara Giuliani, Shunsuke Inenaga, Zsuzsanna Lipták +3
A bit catastrophe, loosely defined, is when a change in just one character of a string causes a significant change in the size of the compressed string. We study this phenomenon fo…
BWT for string collections
Davide Cenzato, Zsuzsanna Lipták, Nadia Pisanti +2
We survey the different methods used for extending the BWT to collections of strings, following largely [Cenzato and Lipták, CPM 2022, Bioinformatics 2024]. We analyze the specifi…
Generalization of Repetitiveness Measures for Two-Dimensional Strings
Lorenzo Carfagna, Giovanni Manzini, Giuseppe Romana +2
The problem of detecting and measuring the repetitiveness of one-dimensional strings has been extensively studied in data compression and text indexing. Our understanding of these…
Morphisms and BWT-run Sensitivity
Gabriele Fici, Giuseppe Romana, Marinella Sciortino +1
We study how the application of injective morphisms affects the number of equal-letter runs in the Burrows-Wheeler Transform (BWT). This parameter has emerged as a key repetiti…
Faster run-length compressed suffix arrays
Nathaniel K. Brown, Travis Gagie, Giovanni Manzini +2
We first review how we can store a run-length compressed suffix array (RLCSA) for a text of length over an alphabet of size whose Burrows-Wheeler Transform (BWT) consi…