We make use of users' (check-in) activity as a novel type of context for anticipating information needs in a mobile scenario. We study the temporal dynamics of information needs and develop a set of models to address users' future information needs with a ranked list of information cards.

7. Zero-query
information retrieval system
7
• no explicit query from user
• IR triggered by context
• cheap information for user

8. Zero-query
information retrieval system
8

9. Context:
Activity
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10. Context:
Activity
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Watching
football match

11. Context:
Activity
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12. Research questions
1) What are common information needs w.r.t. activity?
2) Are information needs static or dynamic in time?
3) How to rank future information needs given the last
activity of the user?
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13. RQ 1
Relevance of information needs
given user's activity
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14. RQ 1
Relevance of information needs
given user's activity
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15. RQ 2
Temporal dynamics of information needs
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16. RQ 2
Temporal dynamics of information needs
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17. RQ 2
Temporal dynamics of information needs
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18. RQ 2
Temporal dynamics of information needs
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19. RQ 3
Anticipation of user's future information needs
given her last activity
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20. Future work
• Exact timing of information cards
• Content of information cards
• Personalization
• Evaluation
Didn't fit in presentation
• Anticipating information needs and addressing them
with information cards using activity as a context.
Wrap up
20

21. Future work
• Exact timing of information cards
• Content of information cards
• Personalization
• Evaluation
Didn't fit in presentation
• Anticipating information needs and addressing them
with information cards using activity as a context.
Wrap up
Hire me for
an internship!

22. www.zero-query.com