information retrieval

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Across
  1. 7. - Assigning documents to predefined categories
  2. 9. - Ratio of relevant documents retrieved to total retrieved
  3. 11. - Ratio of relevant documents retrieved to total relevant
  4. 13. - Basic unit of information in IR
  5. 14. - Process of organizing data for fast retrieval
  6. 15. - User input that expresses information need
  7. 18. - Data structure mapping terms to documents
  8. 19. - Weighting scheme based on term frequency and inverse document frequency
  9. 20. - Grouping documents with similar content
Down
  1. 1. - Common words usually removed during preprocessing
  2. 2. - Breaking text into words or terms
  3. 3. - System that retrieves web documents based on queries
  4. 4. - Model that represents documents and queries as vectors
  5. 5. - Retrieval model using logical operators AND, OR, NOT
  6. 6. - Reducing words to their base or root form
  7. 8. - Process of obtaining relevant documents from a large collection
  8. 10. - Technique where user feedback improves retrieval
  9. 12. - Reducing words to their dictionary form
  10. 16. - Ordering of retrieved documents by relevance
  11. 17. - Automated program that browses and collects web pages