This exercise has two parts.
Part 1: Visual Encoding Scheme and Tasks
Here are videos to explain a visual encoding scheme:
Are the presentations clear to you? Which one is better? Why?
What are the data? What are the visualizations? What are the tasks?
The original paper: https://dl.acm.org/citation.cfm?id=3174074
Part 2: Please watch this video:
and answer the following questions:
1. In which years, the top author has been changed?
2. In which year, the researchers from Asia have appeared in the chart for the first time?
3. In which year, the number of European researchers has reached its peak?
4. What is the highest rank for a researcher from USA? from Europe? from Asia?
Can you design some visualizations other than animations to answer the above questions more efficiently?