Package org.apache.mahout.matrix

Examples of org.apache.mahout.matrix.Vector.cardinality()

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  public double distance(Vector p1, Vector p2) {
    double result = 0;

    Vector res = p2.minus(p1);
    if (weights == null) {
      for (int i = 0; i < res.cardinality(); i++) {
        result += Math.abs(res.get(i));
      }
    }
    else {
      for (int i = 0; i < res.cardinality(); i++) {
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      for (int i = 0; i < res.cardinality(); i++) {
        result += Math.abs(res.get(i));
      }
    }
    else {
      for (int i = 0; i < res.cardinality(); i++) {
        result += Math.abs(res.get(i) * weights.get(i)); // todo this is where the weights goes, right?
      }
    }

    return result;
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