Evidence
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Alignment-free methods based on word-pattern counts offer a complementary route to genome and metagenome comparison that does not require complete genomes and is generally computationally efficient. These approaches have been applied to problems such as comparing gene regulatory regions, binning metagenomic contigs, and detecting horizontal gene transfers, illustrating the breadth of sequence-comparison tasks that can be addressed without alignment.
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Alignment-Free Sequence Analysis and Applications
Alignment-free approaches based on the counts of word patterns in NGS data do not depend on the complete genome and are generally computationally efficient. Thus, they contribute significantly to genome and metagenome comparison. Recently, novel statistical approaches have been developed for the com…
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Alignment-free approaches based on the counts of word patterns in NGS data do not depend on the complete genome and are generally computationally efficient. Thus, they contribute significantly to genome and metagenome comparison. Recently, novel statistical approaches have been developed for the comparison of both long and shotgun sequences. These approaches have been applied to many problems including the comparison of gene regulatory regions, genome sequences, metagenomes, binning contigs in metagenomic data, identification of virus-host interactions, and detection of horizontal gene transfers. We provide an updated review of these applications and other related developments of word-count based approaches for alignment-free sequence analysis.