Hierarchical Annotation Event Extraction Method in Multiple Scenarios

Table 3

Event extraction error instance.

Type	Error instance
Trigger classification error	Pick up orders at 4 am! 51-year-old takeaway rider killed in a car accident
	Corpus label: disaster/accident-traffic accident
	Model tag: life-death
Missing of trigger word recognition	Three people have been killed and five injured in the collapse of Shenzhen sports center
	Corpus label: disaster/accident-collapse life-death
	Model tag: life-death
Argument classification errors	Lack of major general Braves hard won the G5, even if the public opinion is more optimistic about the rackets into the west
	Argument role: {winner: Braves}
	Role tag: {winner: Braves} {winner: rocket}
Missing of argument recognition	A 5.4 earthquake occurred in Gongxian country.
	Argument role: {magnitude: 5.4} {epicenter: Gongxian country}
	Role tag: {magnitude: 5.4}
Argument boundary segmentation error	The movie “Cold Pursuit” will be released nationwide on September 6!
	Argument role: {time: September 6} {movie: “Cold Pursuit”}
	Role tag: {movie: ““Cold Pursuit” will be released nationwide on September 6”}