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User Interactions in OSNs

User Interactions in OSNs. Evangelia Skiani. Do you have a Facebook account? Why? How likely to know ALL your friends? Why confirm requests? Why not remove them? How much do you care? Interactions,birthday wishes, updates, news. To summarize.

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User Interactions in OSNs

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  1. User Interactions in OSNs EvangeliaSkiani

  2. Do you have a Facebook account? Why? • How likely to know ALL your friends? • Why confirm requests? • Why not remove them? • How much do you care? • Interactions,birthday wishes, updates, news

  3. To summarize • Problem: Indicators of real interactions? Meaningfulness of links, “ties” strength • What about quality? • Future? • Easy task to measure? • Extremes? Think about siblings or singles!! • Approach: Data analysis • Main Finding: Milgram’s experiment not applied • Small World Properties • High clustering • Smaller path lengths (Barabasi) • Connection with protein interactions?

  4. Evolution of activity graphs • Interaction networks: What about the fluctuations in activity? • Example: workplace • Different approach: study subsets by distinguishing strong & weak links • Over 54% of the interactions between the infrequently interacting user pairs can be directly attributed to Facebook’s birthday reminder feature • Privacy: filtering VS public profile • Challenges: • Strong ties: family do not interact online • Weak ties: miscellaneous relationships, friends diversity

  5. Interaction Characterization: Usage profiles in OSNs • Wall posts, Message exchange? What about “silent” interaction? • Questions: • What keeps you interested? What is the impact of interactions? • Is there homogeneity in user behavior? • Where is it useful? • Design • Features Popularity • Differences & commonalities eg densification laws, degree dist, • However: • Clickstream: HTTPS vs HTTP • Data Availability: limited • Observations: • Users stay within same activity • Power law session duration • Criteria for feature popularity

  6. Only 25–35% @ users’ own profile Facebook, 10–15% of the accesses are to public profiles vs 20–25% in LinkedIn Why? Everything Connected? More precisely…

  7. Thank You 

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