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MathGroup Archive 2005

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Re: angry FindMinimum

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57678] Re: angry FindMinimum
  • From: "Pascal" <Pascal.Plaza at ens.fr>
  • Date: Fri, 3 Jun 2005 05:35:12 -0400 (EDT)
  • References: <d7k1ho$o3m$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In fact, that error message is generated because the minimum on this
example is angular, non derivable. If a bit of noise is added to the
data matrix U, the minimum is smooth and FindMinimum works fine.

The real problem comes when the dimensions of U is a lot larger, like
100x10 times. This is when the Kernel gets stuck, using all the memory
available.
Thanks for any help.


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