Function cosineSim

src/context/retrieval.ts:167–177

(a: number[], b: number[])

}

export function cosineSim(a: number[], b: number[]): number {
  let dot = 0, na = 0, nb = 0;
  const len = Math.min(a.length, b.length);
  for (let i = 0; i < len; i++) {
    dot += a[i]! * b[i]!;
    na += a[i]! * a[i]!;
    nb += b[i]! * b[i]!;
  }
  if (na === 0 || nb === 0) return 0;
  return dot / (Math.sqrt(na) * Math.sqrt(nb));
}

export function indexPath(projectRoot: string, embeddingModel: string): string {
  const hash = createHash('sha1').update(`${projectRoot}::${embeddingModel}`).digest('hex').slice(0, 16);