Henok Mengistu presents a demo of an application called "Where is my tweet" that visualizes how tweets spread through re-tweets in a graph. The application collects and sorts re-tweets to show the spread over time as re-tweets can arrive out of order. Some engineering challenges included sorting data across streams in Spark. Henok is a PhD student from Ethiopia studying evolutionary computation who likes soccer but not skiing, and takes questions on analyzing re-tweet graphs to understand audiences and influential spreaders of tweets.

1. Where is my tweet?
Henok Mengistu
Insight Data Engineering Fellow
Silicon Valley, Summer 2016

2. Motivation

3. Motivation
But, this number doesn't show how the tweet spreads-out?

4. But, a re-tweet graph could show

5. A Demo
http://52.33.140.25/
http://www.whereismytweet.online/

6. Under the hood

7. Engineering Challenges
Re-tweets could arrive out of order
– Spark can't sort across a data stream
– The driver node should collect and sort re-tweets

8. ● I am Henok
– Originally, from Ethiopia
– Currently, a PhD student at the University of
Wyoming
● Working on Evolutionary Computation
– I like playing and watching Soccer
– But skiing, not so much so

9. Thank you!

10. Queries
● On the re-tweet graph
– who are my audiences?
● Geographically, social groups
– Betweenness centrality
● Who is relevant to spread out my tweet?
● Identify influential followers