@@ -54,7 +54,7 @@ Concerning software metrics, we have collected all the metrics used in literatur
\noindent\textbf{McCabe} (e.g. Cyclomatic Complexity, Essential Complexity): is used to evaluate the complexity of a software program. It is derived from a flow graph and is mathematically computed using graph theory. Basically, it is determined by counting the number of decision statements in a program \cite{McCabe1976, McCabe1989}.
\noindent\textbf{Halstead} (e.g. Base Measures, Derived Measures): is used to measure some characteristics of a program module - such as the "Length", the "Potential Volume", "Difficulty", the "Programming Time" - by employing some basic metrics like number of unique operators, number of unique operands, total occurrences of operators, total occurrences of operands \cite{shen, Halstead1977}.
\noindent\textbf{Halstead} (e.g. Base Measures, Derived Measures): is used to measure some characteristics of a program module - such as the ``Length'', the ``Potential Volume'', ``Difficulty'', the ``Programming Time'' - by employing some basic metrics like number of unique operators, number of unique operands, total occurrences of operators, total occurrences of operands \cite{shen, Halstead1977}.
\noindent\textbf{Size} (e.g. Lines of Code, Comment Lines of Code): the Lines of Code (LOC) is used to measure a software module and the accumulated LOC of all the modules for measuring a program \cite{li}.
