Lecture 3 Modeling.pdf
Lecture 3 Modeling.pdf
Lecture 3 Modeling.pdf
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Retrieval: Ad hoc and Filtering• Ad hoc retrieval– Documents remain relatively static while new queriesare submitted• Filtering– Queries remain relatively static while new documentscome into the system• e.g., news wiring services in the stock market– User profile describes the user’s preferences• Filtering task indicates to the user which document might beinterested to him• Which ones are really relevant is fully reserved to the user– Routing: a variation of filtering• Ranking filtered documents and show this ranking to users3-8