Gene similarity measures can be distances {gene distance} between expression vectors in expression space.
metric
Distances can have metrics {metric distance}. Distance can always be positive. Distance between point and itself can always be 0. Euclidean distance between two points can always be less than or equal to sum of distance from first point to third point and distance from third point to second point {triangle rule}.
metric: Euclidean distance
Euclidean distances can be differences in point coordinates. Euclidean distances are metric.
semi-metric
Distance measures {semi-metric distance} can be always positive and have distance between point and itself always zero, but not obey triangle rule.
Biological Sciences>Genetics>Recombinant DNA>Gene Expression
4-Genetics-Recombinant DNA-Gene Expression
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Date Modified: 2022.0224