activity profiles in online social media
TRANSCRIPT
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Activity Profiles in Online Social Media
Mohamed Faouzi Atig, Sofia Cassel, Lisa Kaati Amendra Shrestha
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Overview
• Trends in social media• What is an activity profile?• Experiments • Future work
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Online Social Networks• 1.6 billion social network users• 64% of Internet users
– spend time, stay in contact, catching up news• Most popular social network sites
– Facebook, LinkedIn, Twitter• Examples of user generated content
– text– images– multimedia
Statistics from: http://www.statista.com/markets/424/topic/540/social-media-user-generated-content/
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Behavior in Social Media
• People make use of multiple accounts• Free and easy to change identity• Personal information is available on the Internet
– communication pattern– writing style– geographical tags– IP addresses– web browser history– search patterns
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Objectives
• To what extent can we group people with similar communication patterns?
• Experiment on boards.ie discussion forum
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Activity Profile• Users most and least active period• Chronotypes
– morning type, evening type or neutral– stable over time
• Use of temporal information from posts• Divided each day into 6 periods
– information gain• Activity profiles consist of:
– first activity peak– sleeping peak– second activity peak
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Activity Profile
UsersFirst Activity PeakSleeping Activity PeakSecond Activity Peak
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Activity Profile
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Experiment
• Activity Profile– create an activity profile for each user– similar activity pattern
• at least two same activity period• at least one inactivity period
• Multiple Aliases– activity profiles– stylometry and post time analysis
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Data
• Irish discussion forum boards.ie data• Available data
– 11 years data– 50 GB of disk space– 9 million documents
• Used data– 2003 year data for activity profile– 2008 year data for multiple aliases
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Activity Profiles
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Results
Activity Profile Multiple Aliases
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Summary
• Capture activity profiles of Internet users• Group Internet users with similar behavior• Activity profiles can be used to detect multiple
aliases• Minimize analysis time
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Future Work
• Dynamic methods for activity peaks• Cross-platform experiments• Large-scale experiments
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Thank You