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Delve into user modeling approaches applied in information retrieval (IR), including user stereotypes, goals, and implicit evidence sources. Explore challenges and potential solutions in modeling user behavior for enhanced IR systems.
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User Modeling for IR Nicholas J. BelkinSCILS, Rutgers University nick@belkin.rutgers.edu IR & LM Workshop
What’s Been Done in UM for IR • Queries as representations of user’s information “need” – model of the topic • LM could be/has been applied to this purpose (but usually there’s too little language) • Type of user – novice/experienced in topic, in IR; individual differences • Usually explicitly elicited, hard to see what LM has to offer IR & LM Workshop
What’s Been Done in UM for IR • User stereotypes • Based on relating other users’ behaviors to the current user’s (e.g. Amazon recommendations). Some possibilities for LM here IR & LM Workshop
What’s Not Been Done in UM for IR • User goals • At various levels • User situation • Environment, context • Type of information problem • User knowledge (other than categorical) • Long-term models for different interests / topics IR & LM Workshop
What Should be Done in UM for IR • Implicit sources of evidence for all types of models • Dynamic models for single information seeking episodes, and for sequences of episodes • Discriminating between different topic, type, and goal models IR & LM Workshop
Challenges for UM in IR • Explicit personalization of interaction to specific user situation • Integrating short-term and long-term models • Identifying and effectively using appropriate sources of evidence in user behavior for modeling IR & LM Workshop