ml-distance
Version:
Distance and similarity functions to compare vectors
17 lines • 470 B
JavaScript
/**
* Returns the Kulczynski distance between vectors a and b
* @link [Kulczynski algorithm](https://www.naun.org/main/NAUN/ijmmas/mmmas-49.pdf)
* @param a - first vector
* @param b - second vector
*
*/
export default function kulczynski(a, b) {
let up = 0;
let down = 0;
for (let i = 0; i < a.length; i++) {
up += Math.abs(a[i] - b[i]);
down += Math.min(a[i], b[i]);
}
return up / down;
}
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