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Results tagged with optimization
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user 29336
Use this tag for any use of optimization within statistics.
1
vote
1
answer
76
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How can I make this biological relation into a glm model?
I have a biological relation:
Y/m = (X * b) / (1 + X * b)
where Y and X are variables, m and b are parameters. m is greater than Y, and everything is greater than 0.
I have some training data with …
- 1,029
9
votes
2
answers
2k
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Why does adding L1 penalty to R's optim slows things down so much (relative to no penalty or...
A quick Google search turned up a package call "lbfgs" which "finds the optimum of an objective plus the L1 norm of the problem’s parameters" with "a fast and memory-efficient implementation of these optimization …
- 1,029
2
votes
0
answers
219
views
When is logistic regression minimizing under squared error loss the same as maximizing binom... [duplicate]
Implementing logistic regression and getting different results depending on whether I minimize squared error or maximize log likelihood. When are the two equivalent?
- 1,029
1
vote
1
answer
523
views
Neural networks: how can convex optimization produce different weights each time?
However the optimization function (sum squared error in my case) is convex, which means there is one global minima. So I suppose this minima has several equivalent sets of weights that map to it. …
- 1,029