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From: | Jordi Gutiérrez Hermoso |
Subject: | [Octave-bug-tracker] [bug #42181] slash operator on underdetermined system gives "minimum norm solution" instead of "basic solution" |
Date: | Tue, 29 Apr 2014 19:52:09 +0000 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:28.0) Gecko/20100101 Firefox/28.0 Iceweasel/28.0 |
Update of bug #42181 (project octave): Status: Need Info => Wont Fix Open/Closed: Open => Closed _______________________________________________________ Follow-up Comment #7: If it's for pedagogical purposes, I think this would be a great time to explain to students why the Moore-Penrose pseudoinverse is the best thing you can do in general for *both* over-determined and under-determined systems. It's nice that a single concept generalises to both cases. A discussion of least squares regression or the SVD could also be beneficial. This is, for example, how Strang's linear algebra text approaches the topic. It's also a good opportunity to explain to students how Matlab isn't the infallible word of God and why Octave made a better choice here. A good way to help students stop using Matlab is to ensure that they don't deify it. It's flawed software just like everything else. _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?42181> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
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