Evaluating Information Visualization Applications: Difference between revisions

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'''Access Plot:'''<br/>
'''Access Plot:'''<br/>
The access plot shows the students' accesses to the course. It is an mixture of a scatterplot and a histogram.<br/>
<br/>The access plot shows the students' accesses to the course. It is an mixture of a scatterplot and a histogram.<br/>
The scatterplot shows the data of students and of the course while the histogram shows the number of pages of the course accessed by all students on a special date.<br/>
The scatterplot shows the data of students and of the course while the histogram shows the number of pages of the course accessed by all students on a special date.<br/>


[[Image:Accessesplot.JPG|center|400px|Access Plot]]<br/>
<br/>[[Image:Accessesplot.JPG|center|400px|Access Plot]]<br/>


'''Discussion Plot:'''<br/>
'''Discussion Plot:'''<br/>
This 3D scatterplot is about the disussions of the course. The figure shows time, topics and students.<br/>
<br/>This 3D scatterplot is about the disussions of the course. The figure shows time, topics and students.<br/>
The sphere represents a new thread and the number of messages are encoded with the color and size of the sphere.<br/>
The sphere represents a new thread and the number of messages are encoded with the color and size of the sphere.<br/>


[[Image:Sozal_Aspects.jpg|center|300px|Discussion Plot]]<br/>
<br/>[[Image:Sozal_Aspects.jpg|center|300px|Discussion Plot]]<br/>




'''Behavioural Graph:'''<br/>
'''Behavioural Graph:'''<br/>
This graph represents the behaviours of a single student.<br/>
<br/>This graph represents the behaviours of a single student.<br/>
It shows the student's access to the content pages, the global access to the course, a progress with the schedule of the course, messages and the submission of quizzes and assignments.<br/>
It shows the student's access to the content pages, the global access to the course, a progress with the schedule of the course, messages and the submission of quizzes and assignments.<br/>


[[Image:Behavioural_Aspects.jpg|center|300px|Behavioural Graph]]<br/>
<br/>[[Image:Behavioural_Aspects.jpg|center|300px|Behavioural Graph]]<br/>


== Important  Citation ==
== Important  Citation ==
Line 43: Line 43:
{{Quotation| formulate and answer questions [users] didn’t anticipate having
{{Quotation| formulate and answer questions [users] didn’t anticipate having
before looking at the visualization| [C. Plaisant, 2004]}}
before looking at the visualization| [C. Plaisant, 2004]}}
== Suitable Data Types ==


== Evaluation ==
== Evaluation ==

Revision as of 20:01, 26 April 2007


Author

Riccardo Mazza

Short Description

CourseVis

[...] a novel approach of using web log data generated by course management systems (CMS) to help instructors become aware of what is happening in distance learning classes. Specifically, techniques from Information Visualization are used to graphically render complex, multidimensional student tracking data collected by CMS. A system, called CourseVis, illustrates the proposed approach.
[Mazza and Dimitrova, 2004]


Figures

The following visualizations are used to represent the collected data from CourseVis:

Access Plot:

The access plot shows the students' accesses to the course. It is an mixture of a scatterplot and a histogram.
The scatterplot shows the data of students and of the course while the histogram shows the number of pages of the course accessed by all students on a special date.


Access Plot
Access Plot


Discussion Plot:

This 3D scatterplot is about the disussions of the course. The figure shows time, topics and students.
The sphere represents a new thread and the number of messages are encoded with the color and size of the sphere.


Discussion Plot
Discussion Plot



Behavioural Graph:

This graph represents the behaviours of a single student.
It shows the student's access to the content pages, the global access to the course, a progress with the schedule of the course, messages and the submission of quizzes and assignments.


Behavioural Graph
Behavioural Graph


Important Citation

attitudes, feelings and beliefs ... are more likely to be revealed

via the social gathering and the interaction which being in a focus

group entails
[A. Gibbs, 1997]



formulate and answer questions [users] didn’t anticipate having before looking at the visualization
[C. Plaisant, 2004]


Evaluation