IR Implementation Issues, Web Crawlers and Web Search Engines
Review
PPT Slide
Boolean Model
Boolean Searching
Boolean Problems
Advantages and Disadvantage of the Boolean Model
Boolean Extensions
Vector Space Model
Documents in Vector Space
Vector Space Documents and Queries
Similarity Measures
Vector Space with Term Weights and Cosine Matching
Problems with Vector Space
Today
Probabilistic Retrieval
Probabilistic Models: Some Notation
Probabilistic Models
Vector and Probabilistic Models
Web Search Engines
Web Search Conclusions
Web Crawlers
Depth-First Crawling
Breadth First
Inverted Files
How Are Inverted Files Created
How Inverted Files are Created
Inverted files
Probabilistic Models (Again)
Probabilistic Models: Logistic Regression
Probabilistic Models: Logistic Regression attributes
Email: ray@sherlock.berkeley.edu
Home Page: http://sherlock.berkeley.edu
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