@langchain/core
Version:
Core LangChain.js abstractions and schemas
23 lines (21 loc) • 469 B
JavaScript
//#region src/utils/ml-distance/similarities.ts
/**
* Returns the average of cosine distances between vectors a and b
* @param a - first vector
* @param b - second vector
*
*/
function cosine(a, b) {
let p = 0;
let p2 = 0;
let q2 = 0;
for (let i = 0; i < a.length; i++) {
p += a[i] * b[i];
p2 += a[i] * a[i];
q2 += b[i] * b[i];
}
return p / (Math.sqrt(p2) * Math.sqrt(q2));
}
//#endregion
exports.cosine = cosine;
//# sourceMappingURL=similarities.cjs.map