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