Textual Backdoor Attack for the Text Classification System

Algorithm 1

Textual backdoor attack.

Description: normal training dataset , textual backdoor data , original class , target class , and validation data
Textual backdoor:
(1)	matching dataset ( )
(2)	matching dataset ( )
(3)	Train the target classifier  +
(4)	Record classification accuracy on the validation dataset
(5)	Return