Development of a Novel Soft Sensor with Long Short-Term Memory Network and Normalized Mutual Information Feature Selection

Table 1

Candidate input variables of debutanizer column.

Input Variable	ID	Description
	TI-040	Top temperature
	PRC-011	Top pressure
	FRC-015	Reflux flow
	FRC-018	Flow to next system
	TRC-004	6th tray temperature
	TI-036	Bottom temperature 1
	TI-037	Bottom temperature 2