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Setting global precision and decimals

Anne-Claire Martines
Posted 12 years ago
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POSTED BY: Anne-Claire Martines
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Thank you very much! I will discuss this with my professor and let other students in my group recheck my code. (I might be missing something since I have been looking at it so much). I will keep you posted.
POSTED BY: Anne-Claire Martines

You could be running into ill conditioned problems. At which point you may need to think through carefully the formulation to see if the results make sense (sometimes they do, even if it seems that error terms are large). Also it might be possible that rescaling of variables will help.
POSTED BY: Daniel Lichtblau

Dear Daniel,

Thank you for looking further at my problem. I have indeed added the precision code for the parameter lists and the ssp calculation. It did indeed resolve the warning I had before. :-) Thank you. An increase in precision has not resulted in any change in my Identity matrix for the larger k values (the result with which I check whether all my calculations are ok). And I have yet also not found any mistake in my code. So still only for the situations where some of the variables are very small and very large (which occurs at the low k values) I do not obtain a perfect Identity matrix. I will continue working on it, simplifying and checking it.

When I have a better readable script I will resubmit and give an update.

Kind regards,

Anne-Claire
POSTED BY: Anne-Claire Martines
POSTED BY: Daniel Lichtblau
POSTED BY: Anne-Claire Martines

You should also try the changes I suggested. I did, and did not run into the problems mentioned in the first post.

The analysis of error propagation will still need to be done, of course. But at least you'll get further along in the computations to the point where that can proceed.
POSTED BY: Daniel Lichtblau
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