1. 1 Alexander Gelbukh Moscow, Russia

2. 2 Mexico

3. 3 Computing Research Center (CIC), Mexico

4. 4 Chung-Ang University, Korea Electronic Commerce and Internet Application Lab

5. 5 Special Topics in Computer Science Advanced Topics in Information Retrieval Alexander Gelbukh www.Gelbukh.com

6. 6 Information Retrieval In a huge amount of poorly structured information find the information that you need when you dont know exactly what you need or cant explain it Key concepts: The Web User information need Ranking

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9. 9 Importance Knowledge: the main treasure of man Web: Repository? Cemetery of information! Natural language and multimedia information oPoorly structured, badly written Corporate and organizational document bases oSenate speeches: Mexico oMedical data collections oCorporate memory. Microsoft knowledge base Future: data explosion increasing importance

10. 10 Perspectives Corporations: corporate databases Organizations: document bases Government oEuropean Union multilingual problem oThe same in Asia Academy oLots of open research topics oWeb topics oComputational Linguistics topics oIntelligent technologies, AI

11. 11 Textbook http://sunsite.dcc.uchile.cl/irbook/

12. 12 Contents 1.Introduction 2.Modeling 3.Retrieval Evaluation 4.Query Languages 5.Query Operations 6.Text and Multimedia Languages and Properties 7.Text Operations 8.Indexing and Searching 9.Parallel and Distributed IR 10.User Interfaces and Visualization 11.Multimedia IR: Models and Languages 12.Multimedia IR: Indexing and Searching 13.Searching the Web 14.Libraries and Bibliographical Systems 15.Digital Libraries

13. 13 Calendar 1.March 4Presentation of the course 2.March 11Chapter 1: Introduction. Paper presentation. 3.March 18Chapter 2: Modeling. Paper presentation. 4.March 25Chapter 3: Retrieval evaluation. Paper presentation. 5.April 1Chapters 4-7. Paper presentation. 6.April 8Chapter 8: Indexing and Searching. Paper presentation. 7.April 15Chapter 9: Parallel and Distributed IR. 8.April 22Midterm exam. Consultations. Discussion. 9.April 29Chapter 11: Multimedia IR: Models and languages 10.May 6Paper presentation and discussion. 11.May 13Chapter 12: Multimedia IR: Indexing and Searching 12.May 20Paper presentation and discussion. 13.May 27Thesis presentation. 14.June 3Thesis presentation. 15.June 10Paper presentation and discussion. 16.June 17Final exam. Consultations. Discussion.

14. 14 Class structure Main course: Information Retrieval Discussion of previous chapter. Questions I briefly present a new chapter Research seminar: Natural Language Processing Discussion of previous paper. Questions. oIdentification of possible research topics Presentation of a new paper or current work Discussion and questions Goal: publications!

15. 15 Evaluation Oral tests Written test Activity in paper presentations and discussions Preparation of papers for publication

16. 16 Papers for the next classes March 11: Challenges in the Interaction of Information Retrieval and Natural Language Processing Ricardo Baeza-Yates March 18: Head/Modifier Frames for Information Retrieval Cornelis H.A. Koster

17. 17 Thank you! Till March 11