Hi David,
Now, something much important that has to be done before you can apply your learning algorithm is to
normalize your data to z-scores. You can normalize it by using the Accord.Statistics.Tools.ZScores method. This method will subtract the mean of your variables, and divide them by their standard deviation, transforming them into "dimensionless" variables.
I hope it helps, please let me know if it works for you!
I might also create a sample application demonstrating how this can be done. Thanks for exposing the problem!
Best regards,
Cesar