report mvp
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@ -360,7 +360,8 @@ three of my colleagues and making them install and run my project on their local
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system. The examination approximately took 20 minutes for each test subject,
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including installation.
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The questionnaire was implemented using Qualtrics at \href{TBD}{this link}.
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\subsection{User evaluation implementation}
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The questionnaire was implemented using USI's Qualtrics instance.
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Data for the evaluation was collected using a questionnaire with a ``before
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test'' and an ``after test'' section.
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@ -372,9 +373,10 @@ images or stock photos. All participants stated they were mostly familiar with
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TR image search systems, and they had the chance to search for user created
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images. Only one participant never searched for stock photos.
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\begin{figure}[H]
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\begin{tabular}{p{4cm}|p{3.5cm}|p{3.5cm}|p{3.5cm}}
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Question & Subject 1 & Subject 2 & Subject 3 \\
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\begin{figure}[h]
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\begin{subfigure}{1\textwidth}
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\begin{tabular}{p{4.5cm}|p{2.9cm}|p{3.5cm}|p{3.2cm}}
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Question abbreviation & Subject 1 & Subject 2 & Subject 3 \\
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\hline
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\textsc{metadata:} Start time & 2020-12-06 14:52 & 2020-12-07 13:35 & 2020-12-07 13:54\\
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\textsc{metadata:} End time & 2020-12-06 14:58 & 2020-12-07 13:48 & 2020-12-07 14:05\\
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@ -382,18 +384,58 @@ images. Only one participant never searched for stock photos.
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Has searched for user images & Yes & Yes & Yes \\
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Has searched for stock photos & Yes & No & Yes \\
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The UI was easy to use & 6 & 6 & 7 \\
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Accurate results for ``find a person sneezing'' & 6 & 7 & 7 \\
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Accurate results for ``find Varenna'' & 5 & 7 & 7 \\
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Personal task & ``Churchill Pfeil'' & Eiffel tower from query ``France'' &
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``find a person sneezing'' task & 6 & 7 & 7 \\
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``find Varenna'' task & 5 & 7 & 7 \\
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Personal task description & ``Churchill Pfeil'' & Eiffel tower from query ``France'' &
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``Italian traditional masks'' \\
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Accurate results for personal task & 7 & 7 & 7 \\
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Personal task & 7 & 7 & 7 \\
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Clustering was helpful & 6 & 7 & 7 \\
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Irrelevant results were a lot and distracting & 4 & 5 & 2 \\
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Suggestions & Missing Search button & Did not understand clustering was a
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filter & \textit{Great survey background image} \\
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filter & \textit{Great survey background image}\footnote{The background
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image for the Qualtrics survey was this:
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\url{https://usi.qualtrics.com/CP/Graphic.php?IM=IM_9Bmxolx0D6iGvUp}} \\
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\end{tabular}
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\caption{Data collected from the questionnaire.}
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\label{fig:qs}
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\end{subfigure}
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\begin{subfigure}{1\textwidth}
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\vspace{0.3cm}
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\begin{tabular}{p{4cm} | p{11.3cm}}
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Question abbreviation & Actual question presented to test subject \\
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\hline
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\textsc{initial disclaimer} & By proceeding with this user evaluation you
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consent to be recorded and to participate in the user evaluation of the
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"Image Search" Text retrieval system. The whole procedure will take at
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most 15 minutes, any you are allowed to take a break or forfeit at any
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time by first notifying verbally the examiner. \\
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Familiarity with image search TR systems & How much are you familiar with
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image search text retrieval systems (such as google images)? \\
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Has searched for user images & Have you ever searched for an image in
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user-created images sites such as Imgur, Pinterest, \ldots? \\
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Has searched for stock photos & Have you ever searched for images in stock
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image sites such as Shutterstock, 123rf, \ldots ? \\
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The UI was easy to use & The UI of the ``Image Search'' TR system was easy to
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use. \\
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``find a person sneezing'' task & The search results for the
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``find pictures of a person sneezing'' task felt accurate. \\
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``find Varenna'' task & The search results for the ``
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find pictures of Varenna, knowing Varenna is a town in the Lecco area``
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task felt accurate. \\
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Personal task description & Please describe briefly the task of personal choice you
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selected. \\
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Personal task & The search results for the task of
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personal choice felt accurate. \\
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Clustering was helpful & The results clustering feature made finding
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relevant images easier. \\
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Irrelevant results were a lot and distracting & The presence of irrelevant
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results was significant and distracting from my search task. \\
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Suggestions & Something to add? \\
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\end{tabular}
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\caption{Actual questions presented to the test subjects.}
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\label{fig:qsa}
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\end{subfigure}
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\caption{The questionnaire}
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\end{figure}
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Figure \ref{fig:qs} illustrates the data gathered from the questionnaire.
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@ -407,6 +449,26 @@ expressed in CEST without DST (corresponding to the local time of participants).
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All participants started the questionnaire before they started effectively using
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the IR system, so this data can also be used to measure the experiment's length.
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Figure \ref{fig:qsa} illustrates the actual questions presented in the exact
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wording test subject read them.
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\subsection{Evaluaiton results}
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Results from the user evalutation appear promising. The users are generally
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satisfied by the system, with the only notable exception being a general feeling
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of unsatisfactory precision of the TR system (as evinced by the answers to the
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``Inaccurate results'' question).
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From the general suggestions emerges the need for two additional features:
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\begin{itemize}
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\item The need for a search button next to the search box. At the moment,
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users must press Enter to search, and this may be unclear due to the fact
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that this breaks the average expectation of unexperienced users and this
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quirk is only described in the placeholder of the search box;
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\item The need to label and explain the clustering feature to users. Subject
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2 in particular was confused by the current presentation of clusters and did
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not understand that this feature could be used to filter results. This issue
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can be solved by either adding a textual description of the feature or by
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having a ``tutorial'' of sorts when the user first opens the interface.
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\end{itemize}
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\end{document}
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