cvs/02/assignment2.tex

%Assignment is conducted in pairs. Max. 8 pages.
\documentclass[12pt, a4paper]{article}
\usepackage[latin1]{inputenc}

\begin{document}
  \pagenumbering{roman}
  \thispagestyle{empty}
  \begin{centering}
    Assignment 1 - PAC003: Software Metrics, 5p\\
    Jonas Petersson \& Mathias Börjeson\\
    \emph{jopd01@student.bth.se \& tb00mbo@student.bth.se}\\
  \end{centering}
  \tableofcontents
  \newpage
  \pagenumbering{arabic}
  \section{Internal product attributes}
    \subsection{Explain how the three aspects of the software size (Length,
    Functionality and Complexity) are supplementing each other to describe
    the notion of software size.}
        %length        = is a physical size of the product
        %functionality = counts the functions supplied by the product
        %complexity    = measures the complexity od underlying problem, or a solution
%utan att ha en aning om hur notationen ser ut drar jag till med följande
        These three supplements each other adding references to
        each other. None of these is useful by itself, but by
        adding them up one can get a better perspective of the
        size of the software. The length itself don't tell
        anything of how large the completed software will be, but
        together with functions and complexity one can understand
        the size of the software. Once the size of the software is
        established one may come with effort estimations, and
        based on those make a budget for what resources the
        project will need. Given these three it is possible to get
        an idea of how productive a programmer is during a time
        unit. It will not be a perfect answer, but it will be
        something that could be used to measure deviations in work
        etc.
    \subsection{Give an example where code length measure can be useful and an
    example where source code length measure is not useful.}
        Code length is useful if it is not going to be used by
        itself. One example of this could be if we are interested
        in how much work is done in a week. Then we could look at
        loc, and also take into account the complexity and the functions provided
        (like loc * complexity / functions or something similar).
        Then loc could be useful.

        Code length is useless if it is used by itself. For
        example the statement I am a good programmer since I
        produce more then n loc per week useless.
    \subsection{Explain what are the main ideas behind Albrecht's Function Points.
    Discuss advantages and disadvantages of the measure. Motivate.}
        %denna var bra http://www.spr.com/products/function.htm
        The main idea behind FP's are to provide  language
        independent metric that can be used no matter what
        language are used. Albrech thought it was wrong that the
        only way to tell effort and cost per effort until he begun
        was in loc. A often used metric to tell productivity was
        cost/loc, and that don't tell anything since different
        languages require different number of loc's to solve the
        same problem. This cost could be lover if the language
        requires a lot of code, but the end cost could still get
        higher if the program takes longer time to complete.
        The main idea behind FP's is to give ways to
        tell cost and productivity in a way that is language
        independent. FP's does satisfy this idea. A easier
        language will get a lower cost/FP and a greater number of
        FP's/person\&month then a more complex language.

        The great advantage with this method is that it is (almost) truly
        language independent, while a disadvantage would be that
        if this is established in the beginning of a project and
        should be used to choose a appropriate language to use, if
        the language is unfamiliar, then these metrics can't be
        computed (like FP's/person\&month). Also this way of presenting
        the result does not take into account training and
        inexperience while showing the result. Also this should
        not be used to compare different projects or groups to se
        the difference between them since this does not take
        everything into account. Also one might be tempted to
        always use the language with the highest productivity,
        this is good in most cases, but sometimes there are other
        factors to sum in, like speed, security etc.
    \subsection{Describe structural measures presented by Fenton. (Control flow
    structure, Data flow structure, Data structure). Give an example
    where you explain how one could use the structural measures
    (specify which structural measure) to ensure the quality of the
    software product.}
        svar
    \subsection{Draw the flow graph for the program, which
    based on the data provided by everyday measurements of the air
    temperature will calculate the maximum, minimum and the most
    commonly occurred temperature (the temperature that occurs twice
    or more) for a given month. Present program paths that has to be
    executed in order to satisfy the following testing strategies:}
        \subsubsection{Statement coverage}
            svar
        \subsubsection{Branch coverage}
            svar
        \subsubsection{Visit each loop}
            svar
    \subsection{Calculate the cyclomatic complexity of your program. What does
    this figure tell you?}
        svar
  \section{OO metrics}
  \textbf{Measuring the use cases}
    \subsection{Measure the use case specifications shown in Design 1 using the
    chosen use case metrics suite from the lecture}
        svar
    \subsection{Measure the use case specifications shown in Design 2 using the
    chosen use case metrics suite from the lecture}
        svar
    \subsection{Write a short section (up to ½ page) with answers to the following
    questions:}
        \subsubsection{Which of the two systems presented can be expected to be
             more complex and why?}
                svar
        \subsubsection{Which of the two systems can be expected to require more
            effort to be built? Why?}
                svar
  \textbf{Measuring designs}
  \subsection{Measure the class diagram presented in Design 1 using the CK metrics suite presented on the
    lecture.}
          svar
    \subsection{Measure the class diagram presented in Design 2 using
    the CK metrics suite presented on the lecture.}
          svar
    \subsection{Measure the code in the files .java from Design 1 with the CK metrics suite
    presented on the lecture.}
          svar
    \subsection{ Measure the code in the files .java
    from Design 2 with the CK metrics suite presented on the lecture.}
          svar
    \subsection{Write a short section (up to ½ page) with answers to the following
    questions:}
        \subsubsection{Which of the metrics could not be computed based on the class
        diagrams? Why?}
            svar
        \subsubsection{Which of the two systems is more complex? Why?}
            svar
        \subsubsection{Which method of gathering metrics - from UML designs or source
        code - is less time consuming?}
            svar
  \section{External product attributes}
    \subsection{Describe how the external product attributes differ from the
    internal ones. Describe the connection between external and
    internal product attributes.}
          svar
    \subsection{Assume that you are
    working at the company that mainly specializes on developing of
    web-based applications. Your manager gives you an assignment to
    develop a software quality model for the company. The model should
    show external quality attributes, corresponding internal
    attributes and metrics. Present the assumptions that you will use
    while creating of the quality model. Provide an explanatory text
    for your model.}
        max 8 sidor
\end{document}
1	%Assignment is conducted in pairs. Max. 8 pages.
2	\documentclass[12pt, a4paper]{article}
3	\usepackage[latin1]{inputenc}
4
5	\begin{document}
6	\pagenumbering{roman}
7	\thispagestyle{empty}
8	\begin{centering}
9	Assignment 1 - PAC003: Software Metrics, 5p\\
10	Jonas Petersson \& Mathias Börjeson\\
11	\emph{jopd01@student.bth.se \& tb00mbo@student.bth.se}\\
12	\end{centering}
13	\tableofcontents
14	\newpage
15	\pagenumbering{arabic}
16	\section{Internal product attributes}
17	\subsection{Explain how the three aspects of the software size (Length,
18	Functionality and Complexity) are supplementing each other to describe
19	the notion of software size.}
20	%length = is a physical size of the product
21	%functionality = counts the functions supplied by the product
22	%complexity = measures the complexity od underlying problem, or a solution
23	%utan att ha en aning om hur notationen ser ut drar jag till med följande
24	These three supplements each other adding references to
25	each other. None of these is useful by itself, but by
26	adding them up one can get a better perspective of the
27	size of the software. The length itself don't tell
28	anything of how large the completed software will be, but
29	together with functions and complexity one can understand
30	the size of the software. Once the size of the software is
31	established one may come with effort estimations, and
32	based on those make a budget for what resources the
33	project will need. Given these three it is possible to get
34	an idea of how productive a programmer is during a time
35	unit. It will not be a perfect answer, but it will be
36	something that could be used to measure deviations in work
37	etc.
38	\subsection{Give an example where code length measure can be useful and an
39	example where source code length measure is not useful.}
40	Code length is useful if it is not going to be used by
41	itself. One example of this could be if we are interested
42	in how much work is done in a week. Then we could look at
43	loc, and also take into account the complexity and the functions provided
44	(like loc * complexity / functions or something similar).
45	Then loc could be useful.
46
47	Code length is useless if it is used by itself. For
48	example the statement I am a good programmer since I
49	produce more then n loc per week useless.
50	\subsection{Explain what are the main ideas behind Albrecht's Function Points.
51	Discuss advantages and disadvantages of the measure. Motivate.}
52	%denna var bra http://www.spr.com/products/function.htm
53	The main idea behind FP's are to provide language
54	independent metric that can be used no matter what
55	language are used. Albrech thought it was wrong that the
56	only way to tell effort and cost per effort until he begun
57	was in loc. A often used metric to tell productivity was
58	cost/loc, and that don't tell anything since different
59	languages require different number of loc's to solve the
60	same problem. This cost could be lover if the language
61	requires a lot of code, but the end cost could still get
62	higher if the program takes longer time to complete.
63	The main idea behind FP's is to give ways to
64	tell cost and productivity in a way that is language
65	independent. FP's does satisfy this idea. A easier
66	language will get a lower cost/FP and a greater number of
67	FP's/person\&month then a more complex language.
68
69	The great advantage with this method is that it is (almost) truly
70	language independent, while a disadvantage would be that
71	if this is established in the beginning of a project and
72	should be used to choose a appropriate language to use, if
73	the language is unfamiliar, then these metrics can't be
74	computed (like FP's/person\&month). Also this way of presenting
75	the result does not take into account training and
76	inexperience while showing the result. Also this should
77	not be used to compare different projects or groups to se
78	the difference between them since this does not take
79	everything into account. Also one might be tempted to
80	always use the language with the highest productivity,
81	this is good in most cases, but sometimes there are other
82	factors to sum in, like speed, security etc.
83	\subsection{Describe structural measures presented by Fenton. (Control flow
84	structure, Data flow structure, Data structure). Give an example
85	where you explain how one could use the structural measures
86	(specify which structural measure) to ensure the quality of the
87	software product.}
88	svar
89	\subsection{Draw the flow graph for the program, which
90	based on the data provided by everyday measurements of the air
91	temperature will calculate the maximum, minimum and the most
92	commonly occurred temperature (the temperature that occurs twice
93	or more) for a given month. Present program paths that has to be
94	executed in order to satisfy the following testing strategies:}
95	\subsubsection{Statement coverage}
96	svar
97	\subsubsection{Branch coverage}
98	svar
99	\subsubsection{Visit each loop}
100	svar
101	\subsection{Calculate the cyclomatic complexity of your program. What does
102	this figure tell you?}
103	svar
104	\section{OO metrics}
105	\textbf{Measuring the use cases}
106	\subsection{Measure the use case specifications shown in Design 1 using the
107	chosen use case metrics suite from the lecture}
108	svar
109	\subsection{Measure the use case specifications shown in Design 2 using the
110	chosen use case metrics suite from the lecture}
111	svar
112	\subsection{Write a short section (up to ½ page) with answers to the following
113	questions:}
114	\subsubsection{Which of the two systems presented can be expected to be
115	more complex and why?}
116	svar
117	\subsubsection{Which of the two systems can be expected to require more
118	effort to be built? Why?}
119	svar
120	\textbf{Measuring designs}
121	\subsection{Measure the class diagram presented in Design 1 using the CK metrics suite presented on the
122	lecture.}
123	svar
124	\subsection{Measure the class diagram presented in Design 2 using
125	the CK metrics suite presented on the lecture.}
126	svar
127	\subsection{Measure the code in the files .java from Design 1 with the CK metrics suite
128	presented on the lecture.}
129	svar
130	\subsection{ Measure the code in the files .java
131	from Design 2 with the CK metrics suite presented on the lecture.}
132	svar
133	\subsection{Write a short section (up to ½ page) with answers to the following
134	questions:}
135	\subsubsection{Which of the metrics could not be computed based on the class
136	diagrams? Why?}
137	svar
138	\subsubsection{Which of the two systems is more complex? Why?}
139	svar
140	\subsubsection{Which method of gathering metrics - from UML designs or source
141	code - is less time consuming?}
142	svar
143	\section{External product attributes}
144	\subsection{Describe how the external product attributes differ from the
145	internal ones. Describe the connection between external and
146	internal product attributes.}
147	svar
148	\subsection{Assume that you are
149	working at the company that mainly specializes on developing of
150	web-based applications. Your manager gives you an assignment to
151	develop a software quality model for the company. The model should
152	show external quality attributes, corresponding internal
153	attributes and metrics. Present the assumptions that you will use
154	while creating of the quality model. Provide an explanatory text
155	for your model.}
156	max 8 sidor
157	\end{document}