A family of tree-based generators for bubbles in directed graphs - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Journal of Graph Algorithms and Applications Year : 2021

A family of tree-based generators for bubbles in directed graphs


Bubbles are pairs of internally vertex-disjoint (s, t)-paths in a directed graph. In de Bruijn graphs built from reads of RNA and DNA data, bubbles represent interesting biological events, such as alternative splicing (AS) and allelic differences (SNPs and indels). However, the set of all bubbles in a de Bruijn graph built from real data is usually too large to be efficiently enumerated and analysed in practice. In particular, despite significant research done in this area, listing bubbles still remains the main bottleneck for tools that detect AS events in a reference-free context. Recently, in [1] the concept of a bubble generator was introduced as a way for obtaining a compact representation of the bubble space of a graph. Although this bubble generator was quite effective in finding AS events, preliminary experiments showed that it is about 5 times slower than state-of-art methods. In this paper we propose a new family of bubble generators which improve substantially on previous work: bubble generators in this new family are about two orders of magnitude faster and are still able to achieve similar precision in identifying AS events. To highlight the practical value of our new bubble generators, we also report some experimental results on real datasets.
Fichier principal
Vignette du fichier
luca-jgaa.pdf (601.14 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03504540 , version 1 (29-12-2021)



Vicente Acuña, Leandro Ishi Soares de Lima, Giuseppe F Italiano, Luca Pepè Sciarria, Marie-France Sagot, et al.. A family of tree-based generators for bubbles in directed graphs. Journal of Graph Algorithms and Applications, 2021, 25 (1), pp.549-562. ⟨10.7155/jgaa.00572⟩. ⟨hal-03504540⟩
75 View
101 Download



Gmail Facebook X LinkedIn More