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Veronika Strnadová – University of California, Santa Barbara
David Jurgens, Tsai-Ching Lu – HRL Laboratories, LLC
Supported by the Intelligence Advanced Research Projects Activity (IARPA) via Department of Interior National Business Center (DoI/NBC) contract number D12PC00285.
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Goal – Analyze Microtext Characterize online discussions using a network
model of Twitter
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Goal – Analyze Microtext Characterize online discussions using a network
model of Twitter
Identify different discussion types
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Background
Correlating financial time series with micro-blogging activity. Ruiz E., Hristidis V., Castillo C., Gionis A., Jaimes A.
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Keyword Categories
Musicians Sports Teams Companies Countries
Lady Gaga Dodgers Microsoft Great Britain
Jay-Z Yankees IBM United States
Red Hot Chili Peppers Cardinals Intel Uganda
Dave Matthews Band Diamondbacks Apple Greece
Kanye West Padres Sony Mexico
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Dataset Twitter Decahose: a live feed of 10% of real tweets,
sampled at random
15,000 tweets per keyword graph per day
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Network Construction: Graph Schema
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Network Construction: Graph Schema
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Network Construction: Example
Los Angeles, California, USA
Alice
Bob Clarissa
tweet1
#mlb
tweet2
tweet3 tweet4
#dodgers
tweet5
tweet6 #cardinals
St. Louis, Missouri, USA
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Temporal Changes in Network Properties
Whole-Graph Metrics Graph Node Metrics
• Node Type Composition • Number of Connected Components • Diameter • Normalized Diameter
• Degree Distribution • Pagerank Distribution • Closeness Distribution
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Results: Normalized Diameter
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Results: Normalized Diameter “Yankees” Keyword Graph
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Results: Normalized Diameter “Yankees” Keyword Graph
July 2012
Sunday Monday Tuesday Wednesday Thursday Friday
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Results: Pagerank
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Results: Pagerank “IBM” Keyword Graph
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Results: Pagerank “Lady Gaga” Keyword Graph
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Closeness
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Closeness
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Conclusion and Future Directions Modeling online discussions as relationships between people, locations, and topics has potential to reveal interesting properties of online discourse
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Conclusion and Future Directions Modeling online discussions as relationships between people, locations, and topics has potential to reveal interesting properties of online discourse
Future work:
Move beyond basic graph metrics
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Conclusion and Future Directions Modeling online discussions as relationships between people, locations, and topics has potential to reveal interesting properties of online discourse
Future work:
Move beyond basic graph metrics
Identify key elements in a discussion
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Conclusion and Future Directions Modeling online discussions as relationships between people, locations, and topics has potential to reveal interesting properties of online discourse.
Future work:
Move beyond basic graph metrics
Identify key elements in a discussion
Track geographic shifts of public interest in a topic
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Thank You!
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Backup – Graph Construction