Thursday, August 7, 2008

Similarity Matrix


A similarity matrix is a matrix of scores which express the similarity between two data points. Similarity matrices are used in sequence alignment. Higher scores are given to more-similar characters, and lower or negative scores for dissimilar characters. This similarity matrix compares a recording of TV stream with itself. We can observe that programs can be easily localized because they correspond to blocs of high coefficients around the first diagonal.

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