- coefficient of similarity
- 镶边粉芽堆
Medical Chinese dictionary (湘雅医学词典). 2013.
coefficient of similarity
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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… … Wikipedia
Dice's coefficient — Dice s coefficient, named after Lee Raymond Dice[1] and also known as the Dice coefficient, is a similarity measure over sets: It is identical to the Sørensen similarity index, and is occasionally referred to as the Sørensen Dice coefficient. It… … Wikipedia
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… … Wikipedia
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… … Wikipedia
Overlap coefficient — The overlap coefficient is a similarity measure related to the Jaccard index that computes the overlap between two sets which is defined as follows: If set X is a subset of Y or the converse then the overlap coefficient is equal to one.… … Wikipedia
Partition coefficient — In chemistry and the pharmaceutical sciences, a partition (P) or distribution coefficient (D) is the ratio of concentrations of a compound in the two phases of a mixture of two immiscible solvents at equilibrium.[1] The terms gas/liquid partition … Wikipedia
Jaccard index — The Jaccard index, also known as the Jaccard similarity coefficient (originally coined coefficient de communauté by Paul Jaccard), is a statistic used for comparing the similarity and diversity of sample sets.The Jaccard coefficient measures… … Wikipedia
String metric — String metrics (also known as similarity metrics) are a class of textual based metrics resulting in a similarity or dissimilarity (distance) score between two pairs of text strings for approximate matching or comparison and in fuzzy string… … Wikipedia
SimMetrics — is an open source extensible library of similarity or distance metrics (also known as string metrics). The SimMetrics open source library includes the following metrics * Levenshtein distance, * Block distance or city block distance or L2… … Wikipedia
biogeographic region — Introduction area of animal and plant distribution having similar or shared characteristics throughout. It is a matter of general experience that the plants and animals of the land and inland waters differ to a greater or lesser… … Universalium
W-shingling — A w shingling is a set of unique shingles mdash;contiguous subsequences of tokens in a document mdash;that can be used to gauge the similarity of two documents. The w denotes the number of tokens in each shingle in the set.The document, a rose is … Wikipedia
