[R] fundamental guide to use of numerical optimizers?

I was in a presentation of optimizations fitted with both MPlus and SAS yesterday. In a batch of 1000 bootstrap samples, between 300 and 400 of the estimations did not converge. The authors spoke as if this were the ordinary cost of doing business, and pointed to some publications in which the

Re: [R] fundamental guide to use of numerical optimizers?

greg.s...@imail.org 801.408.8111 -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- project.org] On Behalf Of Paul Johnson Sent: Thursday, December 15, 2011 9:38 AM To: R-help Subject: [R] fundamental guide to use of numerical optimizers? I

Re: [R] fundamental guide to use of numerical optimizers?

Paul Johnson pauljoh...@gmail.com writes: I was in a presentation of optimizations fitted with both MPlus and SAS yesterday. In a batch of 1000 bootstrap samples, between 300 and 400 of the estimations did not converge. The authors spoke as if this were the ordinary cost of doing business,