## Exercises 2008

• Exercise sessions are held on Mondays 12.15-14.00 in room T5.
• The problems are published about a week before the session.
• Sample solutions are presented in the sessions.
• It is recommended that you try to solve them by yourself beforehand.
• Attendance is voluntary (no extra points etc. given).
• Usually one of the applicable problems will be in the exam.
• Below, the problems and solutions are provided in both English (Eng) and Finnish (Fin).
• However, the Finnish material is from year 2007 and it is not updated.

### Timetable

 Session Date Topics Problems Solutions Extra material 1 28.1.2008 Basics of probability calculus Manning and Schütze: Ch. 1.4, 2.1 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Zipf's law for Finnish 2 4.2.2008 Similarity measures Manning and Schütze: Ch. 2.2.5, 15.2.1 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] 3 11.2.2008 Information retrieval (evaluation, weighting, LSA) Manning and Schütze: Ch. 15.1-4 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] 4 18.2.2008 Entropy and perplexity Manning and Schütze: Ch. 2.2 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] 5 25.2.2008 Markov chains and Hidden Markov Models Manning and Schütze: Ch. 9 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] No exercises 3.3. No exercises 10.3. (examination period) 6 17.3.2008 Collocations (statistical testing, mutual information) Manning and Schütze: Ch. 5 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] No exercises 24.3. (Easter holiday) 7 31.3.2008 Word sense disabiguation (EM, SOM) Manning and Schütze: Ch. 7 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] 8 7.4.2008 N-gram language models Manning and Schütze: Ch. 6 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Preprocessed data for problems 2-3 9 14.4.2008 Statistical machine translation Manning and Schütze: Ch. 13 Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Europarl corpus Script for problem 2 10 21.4.2008 Speech recognition and language model evaluation Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF] Eng: [HTML | PS | PDF] Fin: [HTML | PS | PDF]

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