docs: public double getPartialMinDist(int dimension, int vp) {
      final int qp = queryApprox.getApproximation(dimension);
      if(vp < qp) {
        return lookup[dimension][vp + 1];
      }
      else if(vp > qp) {
        return lookup[dimension][vp];
      }
      else {
        return 0.0;
      }
    }