Absent subsequences in words

M Kosche, T Koß, F Manea, S Siemer - International Conference on …, 2021 - Springer
An absent factor of a string w is a string u which does not occur as a contiguous substring
(aka factor) inside w. We extend this well-studied notion and define absent subsequences: a …

Internal shortest absent word queries in constant time and linear space

G Badkobeh, P Charalampopoulos… - Theoretical Computer …, 2022 - Elsevier
Given a string T of length n over an alphabet Σ⊂{1, 2,…, n O (1)} of size σ, we are to
preprocess T so that given a range [i, j], we can return a representation of a shortest string …

Absent subsequences in words

M Kosche, T Koß, F Manea… - Fundamenta …, 2023 - journals.sagepub.com
An absent factor of a string w is a string u which does not occur as a contiguous substring
(aka factor) inside w. We extend this well-studied notion and define absent subsequences: a …

Reverse-safe text indexing

G Bernardini, H Chen, G Fici, G Loukides… - Journal of Experimental …, 2021 - dl.acm.org
We introduce the notion of reverse-safe data structures. These are data structures that
prevent the reconstruction of the data they encode (ie, they cannot be easily reversed). A …

Constructing antidictionaries of long texts in output-sensitive space

LAK Ayad, G Badkobeh, G Fici, A Héliou… - Theory of Computing …, 2021 - Springer
A word x that is absent from a word y is called minimal if all its proper factors occur in y.
Given a collection of k words y 1,…, yk over an alphabet Σ, we are asked to compute the set …

[PDF][PDF] Internal shortest absent word queries

G Badkobeh, P Charalampopoulos… - … Annual Symposium on …, 2021 - research.gold.ac.uk
Given a string T of length n over an alphabet Σ⊂{1, 2,..., nO (1)} of size σ, we are to
preprocess T so that given a range [i, j], we can return a representation of a shortest string …

Substring complexity in sublinear space

G Bernardini, G Fici, P Gawrychowski… - arXiv preprint arXiv …, 2020 - arxiv.org
Shannon's entropy is a definitive lower bound for statistical compression. Unfortunately, no
such clear measure exists for the compressibility of repetitive strings. Thus, ad hoc measures …

On Combinatorial Properties of Subsequences

T Koß - 2024 - ediss.uni-goettingen.de
In this overview, I present chronologically the published articles to which I contributed during
my doctoral studies. The papers that make up the chapters of this thesis, that is, Paper 1 [69] …

[PDF][PDF] Algorithms for string and graph data protection

H Chen - ACM Journal of Experimental Algorithmics (JEA), 2021 - kclpure.kcl.ac.uk
The growth in data volume has led to an increasing interest in analyzing data about
individuals in domains ranging from marketing to biomedical informatics. Therefore, data …

COMBINATORIAL METHODS FOR BIOLOGICAL DATA

G Bernardini - 2021 - boa.unimib.it
The main goal of this thesis is to develop new algorithmic frameworks to deal with (i) a
convenient representation of a set of similar genomes and (ii) phylogenetic data, with …