Popular MLlib understanding of the Euclidean distance
In mathematics, Euclidean distance or Euclidean metric is the Euclidean space between two points, "normal" (ie linear) distance. Using this distance, Euclidean space becomes a metric space. Associated norm called the Euclidean norm. Pythagoras called the earlier literature metric.
Below shows x (x1, x2 ... xn) to a point of y (y1, y2, y3 ... yn) from the point of
the point corresponding to the respective squares of the differences are added in prescribing
