7. The system of claim 1 , wherein the at least one processor is further configured to: determine harmfulness of the input video segments; analyze occurrence information of the harmful input video segments based on the harmfulness determination results of the input video segments; and finally determine harmfulness of the input video based on the analyzed occurrence information of the harmful input video segments and the generated global harmfulness determination policy.
11. The system of claim 7 , wherein the at least one processor is further configured to: calculate the occurrence frequencies of the harmful input video segments and locations of the occurrences; assign occurrence continuities to the harmful input video segments which successively appear; and calculate the occurrence probability values of the harmful input video segments by combining harmfulness probability values of the harmful input video segments with the occurrence continuities.