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We have recently found that the computation time of homology-based subcellular localization can be substantially reduced by aligning profiles up to the cleavage site positions of signal peptides, mitochondrial targeting peptides, and chloro-plast transit peptides [1]. While the method can reduce the profile alignment time by as much as 20 folds, it cannot reduce the computation time spent on creating...
The subcellular locations of proteins are important functional annotations. An effective and reliable subcellular localization method is necessary for proteomics research. This paper introduces a new method - PairProSVM - to automatically predict the subcellular locations of proteins. The profiles of all protein sequences in the training set are constructed by PSI-BLAST, and the pairwise profile alignment...
In biological sequence classification, it is common to convert variable-length sequences into fixed-length vectors via pairwise sequence comparison. This pairwise approach, however, can lead to feature vectors with dimension equal to the training set size, causing the curse of dimensionality. This calls for feature selection methods that can weed out irrelevant features to reduce training and recognition...
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