Talk:QR decomposition: Difference between revisions

:Why not read the [https://en.wikipedia.org/wiki/QR_decomposition Wikipedia page about QR]? Then if it is not enough, why not open a book on numerical analysis, for example Golub & Van Loan? If a book is asking too much, there are many good online courses about matrix decompositions, [http://www.giyf.com/ Google is your friend]. I'm not claiming that writing a good QR code is easy: it needs some thoughts about geometry, basic matrix operations, and some good ideas about storage (in order to write the Q and R factor in a single n x n matrix plus a vector, as is done in linpack or lapack) -- for example, the Ada solution is not very usable as is, it's just showing how things work with Householder matrix H, in an inefficient way. But programming is not about translating someone else's code, and sometimes it requires some "homework" to understand how to write it yourself. [[User:Arbautjc|Arbautjc]] ([[User talk:Arbautjc|talk]]) 19:55, 6 October 2013 (UTC)