def intersection(self, sk1, sk2):
    """Intersect two sketches.

    Args:
      sk1: first sketch
      sk2: second sketch

    Returns:
      a countmin sketch for intersection
    """
    assert sk1.shape == sk2.shape
    assert self.depth, self.width == sk1.shape
    sk_intersection = sk1 * sk2
    return sk_intersection
Intersect two sketches.

    Args:
      sk1: first sketch
      sk2: second sketch

    Returns:
      a countmin sketch for intersection
    
language/emql/cm_sketch.py