slide1:Introduction to Information Retrieval (IR)
slide 4: Information Retrieval (IR) Architecture
- slide 6:IR queries types
- Keyword queries
- Boolean queries (using AND, OR, NOT)
- Phrase queries
- Proximity queries
- Full document queries
- Natural language questions
Slide 13:
- Information retrieval models
- Boolean model
- Vector space model
- Statistical language model
- Probabilistic Model
Slide 15:
- Boolean Model
- Document Representation:
- Query Representation
- Document Retrieval
Slide 17:
- Vector space model
- Document Representation
- Query representation
- Retrieval
slide 21:An Example
slide 23: Okapi relevance method
slide 24: Statistical Language Model
slide 27:
- improving retrieval effectiveness :
- Relevance feedback
- Rocchio method
slide 31:
- Evaluation
- Precision
- Recall
Slide 34:Example
slide 35:Precision–Recall Curve & Interpolation
slide 39:Evaluation Using Multiple Queries
slide 40:Rank precision
slide:F-Score