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Old 05-14-2013, 02:58 PM
Elroch Elroch is offline
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Default Re: HW6 - Q 2 thru 6 - make sure you apply abs() to the last 2 features!

Quote:
Originally Posted by catherine View Post
I have to admit that due to the time constraints and my current workload - I'm taking a number of courses in parallel - I mostly focus on getting the algorithm right for this particular type of exercise, and don't spend enough time scrutinizing the problem statement. Though I'm not sure I understand why "x1 + x2" and "x1 - x2" wouldn't contribute anything to the model - as they have separate weights assigned to them that get tuned separately from the weights assigned to the separate x and y features.
The reason is because the weights on x1+x2 and x1-x2 could be replaced by adjusted weights on x1 and x2, with no loss of generality. This would just make the calculations simpler.
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