Defect Prediction Technology of Aerospace Software Based on Deep Neural Network and Process Measurement

Table 2

The process metrics for aerospace software.

Category	Metric	Definition
Metrics of the software history process	NM	The number of modified modules, which is the number of revisions to the software module before the version is released
	NDP	New developer proportion, which is the proportion of new personnel participating in the revision’s development
	LA	Lines added, that is, the total number of lines of increased code
	LD	Lines deleted, that is, the total number of lines deleted code
	LM	Lines modified, that is, the total number of lines modified code
Metrics of the demand analysis stage in software management	PND	Proportion of new demand
	PCD	Proportion of continuing demand
	NCD	Number of changes in demand
	PDA	Proportion of demand analysts newly joining the project
Metrics of the demand design stage in software management	DCR1	Demand change rate
	IDR	The inherit design ratio
	PSD1	Proportion of software designers newly joining the project
Metrics of the demand coding stage in software management	DCR2	Demand change rate
	ISD	The inherit ratio of software module
	PSD2	Proportion of new software developers entering the project