64 lines
2.2 KiB
TeX
64 lines
2.2 KiB
TeX
\documentclass[addpoints,11pt]{exam}
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\usepackage{url}
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\usepackage{color}
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\usepackage{hyperref}
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\pagestyle{headandfoot}
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\runningheadrule
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\firstpageheadrule
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\firstpageheader{Scientific Computing}{Project Assignment}{11/05/2014
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-- 11/06/2014}
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%\runningheader{Homework 01}{Page \thepage\ of \numpages}{23. October 2014}
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\firstpagefooter{}{}{}
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\runningfooter{}{}{}
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\pointsinmargin
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\bracketedpoints
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%\printanswers
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%\shadedsolutions
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\begin{document}
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%%%%%%%%%%%%%%%%%%%%% Submission instructions %%%%%%%%%%%%%%%%%%%%%%%%%
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\sffamily
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% \begin{flushright}
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% \gradetable[h][questions]
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% \end{flushright}
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\begin{center}
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\input{../disclaimer.tex}
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\end{center}
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%%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
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\section*{Analysis of eye trajectories.}
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In this project you will analyse eye-tracking data provided by the
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Mallot-Group. In this task the subject had to memorize the positions
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of targets that can be only learned with active gaze shifts. The eye
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movements during training and test are recorded.
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\begin{questions}
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\question In the accompanying dataset you find six variables. (i)
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\textit{eye\_found} a logical array indicating whether the eye was
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found by the tracker. (ii, iii) \textit{gaze\_x} and
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\textit{gaze\_y} containing the x- and y-position of the gaze. They
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relate to a screen with 1280x1024 pixel resolution. (iv)
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\textit{frame\_time} containing time stamps for each frame. (v)
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\textit{marker\_time} containing the time of the last marker. (vi)
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\textit{marker\_count} the count of the markers. All entries with
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the same marker belong to the same trial.
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\begin{parts}
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\part Cut the data in chunks belonging to the same trial.
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\part Characterize the eye movements statistically; eye
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velocity, accelerations.
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\part Detect and correct the eye traces for instances in which the
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eye was not correctly detected. Interpolate linearily in these sections.
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\part Create a 'heatmap' plot that shows the eye trajectories
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for one or two (nice) trials.
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\part Use the \verb+kmeans+ clustering function to
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discriminate different types of eye-movements. Try clustering
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using eye velocitiy and acceleration.
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\end{parts}
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\end{questions}
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\end{document}
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