2007
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Statistical analysis of electrophoresis time series for improving basecalling in DNA sequencing

Tonazzini A., Bedini L.

Blind Source Separation  Basecalling  Bayesian estimation  Blind deconvolution  DNA sequencing 

In automated DNA sequencing, the final algorithmic phase, referred to as basecalling, consists of the translation of four time signals in the form of peak sequences (electropherogram) to the corresponding sequence of bases. Commercial basecallers detect the peaks based on heuristics, and are very efficient when the peaks are distinct and regular in spread, amplitude and spacing. Unfortunately, in the practice the signals are subject to several degradations, among which peak superposition and peak merging are the most frequent. In these cases the experiment must be repeated and human intervention is required. Recently, there have been attempts to provide methodological foundations to the problem and to use statistical models for solving it. In this paper, we exploit a priori information and Bayesian estimation to remove degradations and recover the signals in an impulsive form which makes basecalling straightforward.

Source: Advances in Mass Data Analysis of Signals and Images in Medicine, Biotechnology and Chemistry, edited by Petra Perner, Ovidio Salvetti, pp. 146–155, 2007


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BibTeX entry
@inbook{oai:it.cnr:prodotti:44018,
	title = {Statistical analysis of electrophoresis time series for improving basecalling in DNA sequencing},
	author = {Tonazzini A. and Bedini L.},
	doi = {10.1007/978-3-540-76300-0},
	booktitle = {Advances in Mass Data Analysis of Signals and Images in Medicine, Biotechnology and Chemistry, edited by Petra Perner, Ovidio Salvetti, pp. 146–155, 2007},
	year = {2007}
}