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Not enough computer memory to train the data...

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Lester Lim 2013-1-28

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采纳的回答： per isakson

If my LDA is to train the data but I have not enough computer memory to train the data, what should I do? I tried splitting the data and used one of it to train. However, how should I input the rest of the training data?

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per isakson 2013-1-28

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编辑：per isakson 2013-1-28

Putting the training data in a memmapfile might help.
standard answer: memory is cheap

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Lester Lim 2013-1-28

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What's a memmap file? Can matlab variables be saved into it? Pardon me newbie questions...

per isakson 2013-1-28

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编辑：per isakson 2013-1-28

在 MATLAB Online 中打开

You are welcome! The most important MATLAB command is doc. It's limitation is that you need to know a name. Try

doc memmapfile

Lester Lim 2013-1-28

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I've read it, but still a bit unsure, I gather it is like not importing the data but rather, calling it from the excel without using memory is that right?

Lester Lim 2013-1-28

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Tried it, however when I tried to call it out from the GUI, it didn't work...

per isakson 2013-1-28

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编辑：per isakson 2013-1-28

I don't know what you done!
What error message you received.

However, I know

it is possible to use a memmapfile-object like a huge matrix
it is blasting fast - order of magnitude faster than reading from an excel file

Lester Lim 2013-1-28

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The orignial was to import an excel file and write it into a variable. Then I get down to work by separating the labels from the training data... It didn't work with my codes when I put in m = memmapfile(LDA data). Error was undefined variable...