ml-distance/lib/distances/waveHedges.js

Distance and similarity functions to compare vectors

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/**
 *Returns the Wave Hedges distance between vectors p and q, and accepts the bitVector use, see the test case for an example
 * @link [Wave Hedges algorithm](https://www.naun.org/main/NAUN/ijmmas/mmmas-49.pdf)
 * @param a - first vector
 * @param b - second vector
 * @param bitvector - bitVector
 *
 */
function waveHedges(a, b) {
    let ans = 0;
    for (let i = 0; i < a.length; i++) {
        ans += 1 - Math.min(a[i], b[i]) / Math.max(a[i], b[i]);
    }
    return ans;
}
exports.default = waveHedges;
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