A non-sequential method for constructing trees and hierarchical classifications |
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| Authors: | Walter M Fitch |
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| Institution: | (1) Department of Physiological Chemistry, University of Wisconsin, 53706 Madison, Wisconsin, USA |
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| Abstract: | Summary A procedure is presented that forms an unrooted tree-like structure from a matrix of pairwise differences. The tree is not formed a portion at a time, as methods now in use generally do, but is formed en toto without intervening estimates of branch lengths. The method is based on a relaxed additivity (four-point metric) constraint. From the tree, a classification may be formed. |
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| Keywords: | Classifications Trees Additivity Matrix methods Neighborliness |
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