Zero-query information retrieval system no explicit query from - PowerPoint PPT Presentation

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

Zero-query information retrieval system 8

Context: Activity 9

Context: Activity Watching football match 10

Context: Activity 11

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? 12

RQ 1 Relevance of information needs given user's activity 13

RQ 1 Relevance of information needs given user's activity 14

RQ 2 Temporal dynamics of information needs 15

RQ 2 Temporal dynamics of information needs 16

RQ 2 Temporal dynamics of information needs 17

RQ 2 Temporal dynamics of information needs 18

RQ 3 Anticipation of user's future information needs given her last activity 19

Wrap up • Anticipating information needs and addressing them with information cards using activity as a context. Didn't fj t in presentation • Evaluation Future work • Exact timing of information cards • Content of information cards • Personalization 20

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

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