A metric tree is any tree data structure specialized to index data in metric spaces. Metric trees exploit properties of metric spaces such as the triangle inequality to make accesses to the data more efficient. Examples include the M-tree, vp-trees, cover trees, MVP Trees, and bk trees.
Read more about Metric Tree: Multidimensional Search, Metric Data Structures
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““The tree of knowledge is not the tree of life!” And yet can we cast out of our spirits all the good or evil poured into them by so many learned generations? Ignorance cannot be learned.”
—Gérard De Nerval (1808–1855)