Statistical and Machine Learning Methods for Software Fault Prediction Using CK Metric Suite: A Comparative Analysis

Table 2

CK metric suite.

CK metric	Description	Value
WMC	Sum of the complexities of all class methods	Low
DIT	Maximum length from the node to the root of the tree	<six
NOC	Number of immediate subclasses subordinate to a class in the class hierarchy	Low
CBO	Count of the number of other classes to which it is coupled	Low
RFC	A set of methods that can potentially be executed in response to a message received by an object of that class	Low
LCOM	Measures the dissimilarity of methods in a class via instanced variables	Low