Reference Based Genome Compression

Details Reference Based Genome Compression Reference Based Genome Compression

2012-04-09

arxiv.org/abs/1204.1912v1

Computer Science

Information Theory

5 pages; Submitted to the IEEE Information Theory Workshop (ITW) 2012

Scientific paper

DNA sequencing technology has advanced to a point where storage is becoming the central bottleneck in the acquisition and mining of more data. Large amounts of data are vital for genomics research, and generic compression tools, while viable, cannot offer the same savings as approaches tuned to inherent biological properties. We propose an algorithm to compress a target genome given a known reference genome. The proposed algorithm first generates a mapping from the reference to the target genome, and then compresses this mapping with an entropy coder. As an illustration of the performance: applying our algorithm to James Watson's genome with hg18 as a reference, we are able to reduce the 2991 megabyte (MB) genome down to 6.99 MB, while Gzip compresses it to 834.8 MB.

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