関連キーワード
1. Evolution
2. Information retrieval
3. Comprehensive analysis
4. IR techniques
5. Modern search systems
6. Search engines
7. Ranking algorithms
8. Query expansion
9. Relevance feedback
10. Natural language processing
11. Machine learning
12. Deep learning
13. Text mining
14. Web crawling
15. Indexing
16. Information extraction
17. User modeling
18. Personalization
19. User behavior analysis
20. Semantic search
21. Entity recognition
22. Contextual search
23. Cross-lingual retrieval
24. Multimedia retrieval
25. Information visualization
26. User interface design
27. Evaluation metrics
28. Scalability
29. Big data
30. Privacy and security