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Results tagged with regression
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user 4405
Regression analysis is the process of measuring and establishing a relationship between a dependent variable and one or more independent variables.
8
votes
Accepted
Reverse-engineering a quadratic fit?
My first guess was that they computed a minimax best-approximation polynomial to $\sqrt{x}$ on [0,5,1] with something like the Remez algorithm. However, plotting the difference $p(x)-\sqrt{x}$ I do no …
- 12.6k
6
votes
Accepted
How can I draw a regression line in log scale?
Short version
That regression line looks correct; it is perfectly normal that regression lines might look wonky when you plot them in log-space, because the distances are altered. … The third mixed regression assumes an even weirder error model, which is probably not realistic at all. …
- 12.6k
1
vote
How can we solve the normal equations with limited memory?
Among approximate techniques:
Gradient descent should do a decent job, given the limitations.
Randomized SVD is an effective technique. It is quick to implement, and there are ready-to-use error boun …
- 12.6k