Data Structure Visualization Evaluation

1
Data Structure Visualization Evaluation

• Aejaaz Kamal,
• Fanye Cui,
• Gowri Santhanam,
• Priya Shivakumar

2
Motivation

• Data Structures hard to visualize using text.

• AIM
• To evaluate the effectiveness of AVL tree
  visualization versus text in teaching.
• To compare the two Visualizations among
  themselves.
• - To find out if any special patterns exist.

3
DEMOS !!

• INSET
• Binary Treesome

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Experiment

• Subjects
• students taking the course of CS2604
• Three groups using different tools Text, Inset
  and Binary Treesome

5
Experiment (Contd.)

• Procedure
• Introduction, consent form and demographic form
  (5 minutes)
• Learning AVL tree using one of tools (15 minutes)
• Quiz and post survey form (15 minutes)

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Experiment (Contd.)

• Tasks and Materials
• Consent form and demographic form
• Text material and two visualization tools inset
  and binary tree
• Question-answering tasks conceptual questions
  and procedural questions
• Post session survey
• Dependent Measures
• Students performance
• Students satisfaction

7
Results

• Means Scores

8
Analysis

• ANOVA
• T - test
• See Data

9
Other Trivia (Feedbacks)

• Most People using Visualizations liked them.
• - Interesting and Informative.
• - Some Inset users thought the animation was
  fast.
• The opinions about text were varied
• - Some people liked the pictures.
• - Others termed the text as boring.

10
Questions / Discussions
??