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%vi skall använda templaten, och bifoga denna... |
%vi skall använda templaten, och bifoga denna... |
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\subsection{Measure the use case specifications shown in Design 1 using the |
\subsection{Measure the use case specifications shown in Design 1 using the |
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chosen use case metrics suite from the lecture} |
chosen use case metrics suite from the lecture} |
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svar |
See appendix b. |
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\subsection{Measure the use case specifications shown in Design 2 using the |
\subsection{Measure the use case specifications shown in Design 2 using the |
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chosen use case metrics suite from the lecture} |
chosen use case metrics suite from the lecture} |
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svar |
See appendix c. |
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\subsection{Write a short section (up to ½ page) with answers to the following |
\subsection{Write a short section (up to ½ page) with answers to the following |
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questions:} |
questions:} |
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\subsubsection{Which of the two systems presented can be expected to be |
\begin{itemize} |
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more complex and why?} |
\item Which of the two systems presented can be expected to be |
| 153 |
svar |
more complex and why? |
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\subsubsection{Which of the two systems can be expected to require more |
\item Which of the two systems can be expected to require more |
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effort to be built? Why?} |
effort to be built? Why? |
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svar |
\end{itemize} |
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|
We expect design 2 to become more complex, both since |
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|
it has more use cases, but also since it has higher |
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|
values (in general) on the metrics suit. |
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|
|
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We expect design 2 to require more effort to build |
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since it has more use cases and more actions (more |
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functionality). Also since we feel that design 2 has a |
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higher complexity. Also most of the values that we can |
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get out from our metrics suit are greater, both in |
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total and if we count them per use case. |
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|
|
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|
We feel that it is hard to make good (accurate) |
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|
estimations based on this suit only and we also feel |
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|
that while good estimations on use case level can be |
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made using this suit, it is not a good thing to try to |
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make estimations of the system as a whole only based |
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on this information. |
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\\ \\ \textbf{Measuring designs} |
\\ \\ \textbf{Measuring designs} |
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\subsection{Measure the class diagram presented in Design 1 using the CK metrics suite presented on the |
\subsection{Measure the class diagram presented in Design 1 using the CK metrics suite presented on the |
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lecture.} |
lecture.} |
| 177 |
svar |
See appendix b. |
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\subsection{Measure the class diagram presented in Design 2 using |
\subsection{Measure the class diagram presented in Design 2 using |
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the CK metrics suite presented on the lecture.} |
the CK metrics suite presented on the lecture.} |
| 180 |
svar |
See appendix c. |
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\subsection{Measure the code in the files .java from Design 1 with the CK metrics suite |
\subsection{Measure the code in the files .java from Design 1 with the CK metrics suite |
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presented on the lecture.} |
presented on the lecture.} |
| 183 |
svar |
See appendix b. |
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\subsection{ Measure the code in the files .java |
\subsection{ Measure the code in the files .java |
| 185 |
from Design 2 with the CK metrics suite presented on the lecture.} |
from Design 2 with the CK metrics suite presented on the lecture.} |
| 186 |
svar |
See appendix c. |
| 187 |
\subsection{Write a short section (up to ½ page) with answers to the following |
\subsection{Write a short section (up to ½ page) with answers to the following |
| 188 |
questions:} |
questions:} |
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\subsubsection{Which of the metrics could not be computed based on the class |
\subsubsection{Which of the metrics could not be computed based on the class diagrams? Why?} |
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diagrams? Why?} |
The LCOM (Lack of Cohesion in Methods) metric could |
| 191 |
svar |
not be computed from the class diagram because LCOM metrics |
| 192 |
|
are gathered through counting the number of |
| 193 |
|
method-pairs that have no attributes in common and |
| 194 |
|
then subtract the number of pairs that do have |
| 195 |
|
common attributes. This can not be seen when looking |
| 196 |
|
at the class diagram so you have to look at the |
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|
code to compute it. It would probably be quite handy |
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|
with a tool that computes this metric automatically |
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|
since it is very time consuming to do by hand. |
| 200 |
\subsubsection{Which of the two systems is more complex? Why?} |
\subsubsection{Which of the two systems is more complex? Why?} |
| 201 |
svar |
Since Design2 has a lower total LCOM value (140 vs |
| 202 |
|
93) it is therefore considered more complex. |
| 203 |
|
We draw this conclusion from the lecture and slides about CK metrics, a class |
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|
with low cohesion is ''hard to comprehend, hard to |
| 205 |
|
reuse, hard to maintain and constantly effected by |
| 206 |
|
change´´ |
| 207 |
\subsubsection{Which method of gathering metrics - from UML designs or source |
\subsubsection{Which method of gathering metrics - from UML designs or source |
| 208 |
code - is less time consuming?} |
code - is less time consuming?} |
| 209 |
svar |
You get a much better overview of the system when |
| 210 |
|
looking at the UML design and it is much less |
| 211 |
|
time consuming than searching through source code after source code to |
| 212 |
|
find inheritance, number of children and so on. Some |
| 213 |
|
metrics require going through source code though, so you |
| 214 |
|
can not get everything from the UML designs, although it |
| 215 |
|
would have been handy if it was possible. |
| 216 |
\section{External product attributes} |
\section{External product attributes} |
| 217 |
\subsection{Describe how the external product attributes differ from the |
\subsection{Describe how the external product attributes differ from the |
| 218 |
internal ones. Describe the connection between external and |
internal ones. Describe the connection between external and |