Editing Machine Learning Meetup Notes: 2010-05-23

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We decided to remove (-) and add (+) the following features:
We decided to remove (-) and add (+) the following features:
* Row, (only used for submission, not for ML algorithms)
- Row,
* Anon Student Id,
Anon Student Id,
* Problem Hierarchy,
Problem Hierarchy,
* Problem Name,
Problem Name,
* Problem View,
Problem View,
* - Step Name,
- Step Name,
* + unique step name (step name+problem name)
+ unique step name (step name+problem name)
* - Step Start Time,
- Step Start Time,
* - First Transaction Time,
- First Transaction Time,
* - Correct Transaction Time,
- Correct Transaction Time,
* - Step End Time,
- Step End Time,
* - Step Duration (sec),
- Step Duration (sec),
* - Correct Step Duration (sec),
- Correct Step Duration (sec),
* - Error Step Duration (sec),
- Error Step Duration (sec),
* Correct First Attempt,
  Correct First Attempt,
* - Incorrects,
- Incorrects,
* - Hints,
- Hints,
* - Corrects,
- Corrects,
* - KC(...),
- KC(...),
* - Opportunity(...)
- Opportunity(...)
* + set of superskills (either boolean or opportunity value) (superskills = clustered skills)
+ set of superskills (either boolean or opportunity value) (superskills = clustered skills)
* + step success chance (% of successes total for this unique stepname)
+ step success chance (% of successes total for this step)
* + student "IQ" (% successful answers by this student)
+ student IQ (% successful answers)
* + complexity (number of skills required for this unique stepname)
+ complexity (number of skills required)
 
+ frequency of skills (e.g. discretize into low/medium/high frequency)




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