User Portlet
| Discussions |
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| David, Thank you. Back to work. That will do it for me. Doug |
| In an attempt to speed up Mathematica's PseudoInverse function, I wonder if helping it zero out small numbers would work. With cubic scaling for CPU time and quadratic scaling for memory, I don't know that this will help much but I would like to... |
| David, That was very nice of you to go to all of the trouble to explain this to me. This reminds me of ~ 1987 when people started moving from Unix workstations to the 387! I sure hope that vi editor does not reappear! Doug |
| Illian, Thank you. It runs as: @wolframtap b = c = ConstantArray[0, {256, 256, 3}]; s = 21;;236; b[[All, s]] = c[[s, All]] = Tuples[{0, .5, .5, 0, .5, .5}, 3];Image[b + c] I had to cut into my variables! |
| Who would you credit for discovering the SVD method? Who would have first coded SVD? Does 1984 Waterloo ring a bell? (That was the indirect origin of my first copy on reel to reel in C, but I do not know who wrote it.) |
| I'm back to SVD and SVD short cuts, possibly because of redundancy. |
| Given that your customers have a Mathematica license, is there a way to sell executable code to them without giving away your proprietary source code too? |
| Answer: That's a hard way to take 12 column averages! Doug |
| Please try to stay simple so this can be understood by young students, age 10 -13. |
| Even after optimization, I might need a lot of computation time. Can anyone host me on a supercomputer running Mathematica? If so, could you compare your speed to an Intel i7 with 16 gigs of RAM? I believe I am CPU limited but not memory limited. |