bioRxiv ScienceSearch

Biology subjects

Travis Gagie

Publications and source records attributed to Travis Gagie.

2 recordsLinked to original sources

Succinct Colored de Bruijn Graphs

Iqbal et al. (Nature Genetics, 2012) introduced the colored de Bruijn graph, a variant of the classic de Bruijn graph, which is aimed at \"detecting and genotyping simple and complex genetic variants in an individual or population\". Because they are intended to be applied to massive population level data, it is essential that the graphs be represented efficiently. Unfortunately, current succinct de Bruijn graph representations are not directly applicable to the colored de Bruijn graph, which require additional information to be succinctly encoded as well as support for non-standard traversal operations. Our data structure dramatically reduces the amount of memory required to store and use the colored de Bruijn graph, with some penalty to runtime, allowing it to be applied in much larger and more ambitious sequence projects than was previously possible.

Bioinformatics

Searching and Indexing Genomic Databases via Kernelization

The rapid advance of DNA sequencing technologies has yielded databases of thousands of genomes. To search and index these databases effectively, it is important that we take advantage of the similarity between those genomes. Several authors have recently suggested searching or indexing only one reference genome and the parts of the other genomes where they differ. In this paper we survey the twenty-year history of this idea and discuss its relation to kernelization in parameterized complexity.

Bioinformatics