1. Core Methods in Educational Data Mining
HUDK4050 Fall 2015

2. Assignment C4
What are some interesting rules that people found?

3. Assignment C4
How did people find their rules?

4. Last thoughts or comments on sequential pattern mining

5. Text Mining

6. Thoughts about video lecture?

7. How is textual data different than interaction data?

8. What are the advantages and disadvantages
Of looking for counts of words
Also called “bag of words”/LSA
Of looking for bigrams
Of looking for trigrams
Of looking for grammatical structures

9. Semantic Tagging
What is it?

10. WMatrix categories
At the end

11. What are the advantages and disadvantages
Of semantic tagging versus looking for specific words

12. Questions/Comments?

13. What measures (of student responses) did Graesser et al. paper use?

14. What measures (of student responses) did Graesser et al. paper use?
Learner Verbosity
LSA-based comparison to “good” and “bad” answers
Change in degree of goodness of answer

15. Questions/Comments
About Graesser et al. paper?

16. Talk about other papers (2015)

17. What was goal/approach of
Adamson et al. paper

18. Questions/comments
About Adamson paper?

19. What was goal/approach of
Crossley et al. paper

20. Questions/comments
About Crossley paper?

21. Assignment C5
Visualization
Questions?
me your visualizations

22. Assignment C6 Final project
Please read assignment, I keep getting questions that indicate people have not read assignment
Questions?

23. Next Class Monday, December 10: Visualization Readings
Baker, R.S. (2014) Big Data and Education. Ch. 6, V1, V2, V3, V4, V5.
Kay, J., Maisonneuve, N., Yacef, K., Reimann, P. (2006) The big five and visualisations of team work activity. Intelligent Tutoring Systems: Proceedings 8th International Conference, ITS 2006,
Ritter, S., Harris, T., Nixon, T., Dickinson, D., Murray, R.C., Towle, B. (2009) Reducing the Knowledge Tracing Space. Proceedings of the 2nd International Conference on Educational Data Mining,
Martinez, R., Kay, J., Yacef, K. (2011) Visualisations for longitudinal participation, contribution and progress of a collaborative task at the tabletop. International Conference on Computer Supported Collaborative Learning, CSCL 2011,

24. Some final project presentations next class
Check where you are on the sign-up sheet on the forum!

25. The End