Alignment free sequence comparison methods and reservoir host prediction
نویسندگان
چکیده
منابع مشابه
Multiple alignment-free sequence comparison
MOTIVATION Recently, a range of new statistics have become available for the alignment-free comparison of two sequences based on k-tuple word content. Here, we extend these statistics to the simultaneous comparison of more than two sequences. Our suite of statistics contains, first, C(*)1 and C(S)1, extensions of statistics for pairwise comparison of the joint k-tuple content of all the sequenc...
متن کاملAlignment-free sequence comparison-a review
MOTIVATION Genetic recombination and, in particular, genetic shuffling are at odds with sequence comparison by alignment, which assumes conservation of contiguity between homologous segments. A variety of theoretical foundations are being used to derive alignment-free methods that overcome this limitation. The formulation of alternative metrics for dissimilarity between sequences and their algo...
متن کاملAlignment-Free Sequence Comparison (II): Theoretical Power of Comparison Statistics
Rapid methods for alignment-free sequence comparison make large-scale comparisons between sequences increasingly feasible. Here we study the power of the statistic D2, which counts the number of matching k-tuples between two sequences, as well as D2*, which uses centralized counts, and D2S, which is a self-standardized version, both from a theoretical viewpoint and numerically, providing an eas...
متن کاملAlignment-Free Sequence Comparison (I): Statistics and Power
Large-scale comparison of the similarities between two biological sequences is a major issue in computational biology; a fast method, the D(2) statistic, relies on the comparison of the k-tuple content for both sequences. Although it has been known for some years that the D(2) statistic is not suitable for this task, as it tends to be dominated by single-sequence noise, to date no suitable adju...
متن کاملFast alignment-free sequence comparison using spaced-word frequencies
MOTIVATION Alignment-free methods for sequence comparison are increasingly used for genome analysis and phylogeny reconstruction; they circumvent various difficulties of traditional alignment-based approaches. In particular, alignment-free methods are much faster than pairwise or multiple alignments. They are, however, less accurate than methods based on sequence alignment. Most alignment-free ...
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ژورنال
عنوان ژورنال: Bioinformatics
سال: 2021
ISSN: 1367-4803,1460-2059
DOI: 10.1093/bioinformatics/btab338