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what are the strategies to deal with rank deficient matrices in solving linear systems?

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perhaps constraining to have particular norm value – sam Mar 22 '11 at 10:10
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en.wikipedia.org/wiki/Least_squares – t.b. Mar 22 '11 at 11:48
Can you please explain more how can I constrain to have particular norm value? thanks alot. – user8566 Mar 22 '11 at 17:00
sorry, at the moment can only suggest to read en.wikipedia.org/wiki/Underdetermined_system and en.wikipedia.org/wiki/Compressed_sensing. – sam Mar 24 '11 at 9:57

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