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# Machine Learning notes - changelog

In the interest of making changes/updates as transparent and easy to follow as possible, I figured having a changelog here would make life a lot easier for everyone (and especially for me!).

## Changelog by date

Date | Chapter | Original | Updated | Notes
--- | --- | --- | --- | ---
Jan 9th 2012 | 10 | if d is too small --> this probably corresponds to a high variance problem | if d is too large--> this probably corresponds to a high variance problem | -
Jan 9th 2012 | 10 | For high variance, we find the cross validation is low but training error is high | For high variance, we find the cross validation error is high but training error is low | -
Jan 9th 2012 | 1 | This is an example of a clarification problem | This is an example of a classification problem | -
March 15th 2012 | 9 | i = the example index | i = the error of the affected node in the target layer | -