Week 9: Scale-Free Networks and the Friendship Paradox

Dad Joke

Why did the raisin go out with the prune?

Because he couldn’t find a date.

Housekeeping

  • Thursday - 6 Degrees of Wikipedia
  • Final Project Ideas due (yesterday)
  • Self Assessment, Lab 6, and Social Search all due after Spring Break
  • 6 degrees of Wikipedia on Thursday

Troubled Lands Reflection

Troubled Lands Reflection

  • What did you think about while playing?
  • How did you feel as you played? Did those feeling change across different versions of the game?
  • When do you help others in real life?

Troubled Lands Reflection

  • Were resources and abilities distributed fairly?
  • How should resources be distributed in the real world?
  • What role did communication play? How did your group make decisions?
  • Did you work to make things equal? Why or why not?
  • What kinds of inequality appeared in the game?

Troubled Lands Reflection

  • Did anyone sanction someone else? Why?

Review Questions

  • What is a degree distribution?

Review Questions

  • What is a scale-free distribution?
  • When/where do we find scale-free distributions?
  • What is an example of a network that would not have a scale-free distribution?
  • What are the benefits of scale-free networks?

Review Questions

  • What is the “friendship paradox”?
  • How is the friendship paradox useful?

Friendship Paradox Example

Discussion Questions

  • What are the limits of scale-free networks?
  • Should we try to limit them more?

Visualization Challenge