Prediction of Defective Software Modules Using Class Imbalance Learning

Table 2

Details of software metrics.

Type	Metrics	Definition
McCabe	LOC	Number of code lines
	v(g)	Cyclomatic complexity
	ev(g)	Essential complexity
	iv(g)	Design complexity
Derived Halstead	n	Number of operators and operands
	v	Volume
	l	Program length
	d	Difficulty
	i	Intelligence
	e	Effort to write code
	b	Effort estimate
	t	Time estimator
Basic Halstead	lOCode	Line count
	lOComment	Comment count
	lOBlank	Blank line count
	lOCodeAndComment	Count of code and comment lines
	uniq_op	Number of unique operators
	uniq_opnd	Number of unique operands
	total_op	Number of total operators
	total_opnd	Number of total operands
	branchcount	Number of branch counts
Class	Defect	Describing whether a software module is defective or not