Lecture 3 Modeling.pdf
Lecture 3 Modeling.pdf
Lecture 3 Modeling.pdf
- No tags were found...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Formal Definition of IR Models• /D, Q, F, R(q i , d j )/– D: a set composed of logical views (or representations)for the documents in collection– Q: a set composed of logical views (or representations)for the user information needsquery– F: a framework for modeling documentsrepresentations, queries, and their relationships– R(q i , d j ): a ranking function which associations a realnumber with q i ∈Q and d j ∈D3-10