# similarity

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**Substantial similarity**— Intellectual property law Primary rights Copyright · authors rights  …62

**Cosine similarity**— is a measure of similarity between two vectors by measuring the cosine of the angle between them. The cosine of 0 is 1, and less than 1 for any other angle. The cosine of the angle between two vectors thus determines whether two vectors are… …63

**Chemical similarity**— (or molecular similarity) refers to the similarity of chemical elements, molecules or chemical compounds with respect to either structural or functional qualities, i.e. the effect that the chemical compound has on reaction partners in anorganic… …64

**Musical similarity**— is a certain similarity between two or more musical fragments. If these fragments are from one musical piece a musical similarity implies a repetition of the first occurring fragment. As well, eventually, the similarity does not occur by direct… …65

**Lexical similarity**— In linguistics, lexical similarity is a measure of the degree to which the word sets of two given languages are similar. A lexical similarity of 1 (or 100%) would mean a total overlap between vocabularies, whereas 0 means there are no common… …66

**Self-similarity**— NOTOC [ thumb|right|250px|A Koch curve has an infinitely repeating self similarity when it is magnified.] In mathematics, a self similar object is exactly or approximately similar to a part of itself (i.e. the whole has the same shape as one or… …67

**Sørensen similarity index**— The Sørensen index, also known as Sørensen’s similarity coefficient, is a statistic used for comparing the similarity of two samples. It was developed by the botanist Thorvald Sørensen and published in 1948 [Sørensen, T. (1948) A method of… …68

**How Long Is the Coast of Britain? Statistical Self-Similarity and Fractional Dimension**— is a paper by mathematician Benoît Mandelbrot, first published in Science in 1967. In this paper Mandelbrot discusses self similar curves that have Hausdorff dimension between 1 and 2. These curves are examples of fractals , although Mandelbrot… …69

**Gallery of flags by similarity**— This is a gallery of pairs (or larger groupings) of flags that exhibit such similarity in design that they can be difficult to distinguish. They are organized by the number of main colors (disregarding, for example, colors in emblems) in the… …70

**Structural Similarity**— SSIM (Structural SIMilarity) est une mesure de similarité entre deux images numériques. Elle a été développée pour mesurer la qualité visuelle d une image compressée, par rapport à l image originale. L idée de SSIM est de mesurer la similarité de …