Software flexibility is the ease with which a software system can be modified for use in applications or environments other than those for which it was specifically designed. Software flexibility is not an absolute term. ...

learning techniques based on some software metrics such as Halstead and McCabe\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s cyclomatic. However, many of these metrics usually do not follow Gaussian distribution, and defect and non-defect classes have overlaps...