Data Mining EDUC 545 Spring 2017 Assignment C3 Assignment C3 Who here used principal component analysis Assignment C3 Who here used principal component analysis One person come up here and explain your solution ID: 651436
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Slide1
Core Methods in Educational Data Mining
EDUC 545
Spring 2017Slide2
Assignment C3Slide3
Assignment C3
Who here used principal component analysis?Slide4
Assignment C3
Who here used principal component analysis?
One person come up here and explain your solution
How did you do it?
What tool did you use?
What was your final result?Slide5
Did anyone else
Use the same method
Get a different answer
What was your answer?
What did you do differently?Slide6
Assignment C3
Who here used a different type of factor analysis? (Not including LFA)
One person come up here and explain your solution
How did you do it?
What tool did you use?
What was your final result?Slide7
Did anyone else
Use another factor analysis method
Get a different answer
What was your answer?
What did you do differently?Slide8
Assignment C3
Who here used Learning Factors Analysis?
One person come up here and explain your solution
How did you do it?
What tool did you use?
What was your final result?Slide9
Did anyone else
Use the same method
Get a different answer
What was your answer?
What did you do differently?Slide10
Assignment C3
Who here used Barnes’s Q-Matrix method?
One person come up here and explain your solution
How did you do it?
What tool did you use?
What was your final result?Slide11
Did anyone else
Use the same method
Get a different answer
What was your answer?
What did you do differently?Slide12
Assignment C3
Who here used Knowledge Spaces or Partial Order Knowledge Spaces?
One person come up here and explain your solution
How did you do it?
What tool did you use?
What was your final result?Slide13
Did anyone else
Use the same method
Get a different answer
What was your answer?
What did you do differently?Slide14
Assignment C3
Who here used Non-Native Matrix Factorization?Slide15
Assignment C3
Who here used Non-Native Matrix Factorization?
Really?Slide16
Assignment C3
Who here used Non-Native Matrix Factorization?
Really?
How did you set it up
?
What was the result?Slide17
Assignment C3
Did anyone use a different method than any of these?
What did you use?
How did it work?Slide18
The true answer…Slide19
Why…
Did folks use the methods they used?
Did folks not use the other methods?Slide20
Easy to use tools matter, right?Slide21
What are…
The pluses and minuses of PCA for this problem?Slide22
What are…
The pluses and minuses of other FA for this problem?Slide23
What are…
The pluses and minuses of LFA for this problem?Slide24
What are…
The pluses and minuses of Barnes’s method for this problem?Slide25
What are…
The pluses and minuses of KS/POKS for this problem?Slide26
Any other questions or comments on the assignment?Slide27
What could I have changed about the assignment…
That would have made LFA the obviously best approach to solving it?Slide28
What could I have changed about the assignment…
That would have made KS/POKS the obviously best
approach to solving it
?Slide29
What are the relative benefits of using a q-matrix versus a knowledge space?Slide30
What are the consequences of getting a knowledge mapping wrong?Slide31
What are the relative advantages of
Automatic model discovery
Hand-development and refinement
Hybrid approachesSlide32
What does a spike in a learning curve mean? (Distinct from MBMLM)Slide33Slide34
What is the trade-off
Between Knowledge Spaces
And Bayes Nets
?Slide35
Other questions or comments?Slide36
Next Class
Wednesday, April 19
Assignment B5 due
Baker, R.S. (2015) Big Data and Education. Ch. 5, V1, V2.
Rai, D., Beck, J.E. (2011) Exploring user data from a game-like math tutor: a case study in causal modeling. Proceedings of the 4th International Conference on Educational Data Mining, 307-313.
[pdf]
Rau, M. A.,
Scheines
, R. (2012) Searching for Variables and Models to Investigate Mediators of Learning from Multiple Representations. Proceedings of the 5th International Conference on Educational Data Mining, 110-117.
[pdf]
Slater, S.,
Ocumpaugh
, J., Baker, R.,
Scupelli
, P.,
Inventado
, P.S., Heffernan, N. (2016) Semantic Features of Math Problems: Relationships to Student Learning and Engagement.
Proceedings of the 9th International Conference on Educational Data Mining, 223-230.
[pdf]Slide37
The End