関連キーワード
1. Information retrieval
2. Advancements
3. Techniques
4. Comprehensive review
5. Search engines
6. Ranking algorithms
7. Query expansion
8. Query preprocessing
9. Natural language processing
10. Machine learning
11. Deep learning
12. Text classification
13. Semantic indexing
14. Document clustering
15. Information filtering
16. Personalized search
17. User behavior analysis
18. Recommender systems
19. Collaborative filtering
20. Web scraping
21. Data mining
22. Text summarization
23. Information extraction
24. Topic modeling
25. Evaluation metrics
26. Precision
27. Recall
28. F-measure
29. Average precision
30. User satisfaction