Function buildAffinityMatrix

src/core/clustering.ts:21–36

(vectors: number[][])

}

function buildAffinityMatrix(vectors: number[][]): Matrix {
  const n = vectors.length;
  const data = new Array(n);
  for (let i = 0; i < n; i++) {
    data[i] = new Array(n);
    data[i][i] = 0;
    for (let j = i + 1; j < n; j++) {
      const sim = Math.max(0, cosine(vectors[i], vectors[j]));
      data[i][j] = sim;
    }
    for (let j = 0; j < i; j++) {
      data[i][j] = data[j][i];
    }
  }
  return new Matrix(data);
}

function normalizedLaplacian(affinity: Matrix): Matrix {
  const n = affinity.rows;