ECHO is an error correction algorithm designed for short-reads from next-generation sequencing platforms such as Illumina’s Genome Analyzer II. The algorithm uses a Bayesian framework to improve the quality of the reads in a given data set by employing maximum a posteriori estimation.
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Kao, W.-C., Chan, A. H., and Song, Y. S.
ECHO: A reference-free short-read error correction algorithm,
Genome Research, 21 (2011) 1181-1192″