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<DIV>Hello,</DIV>
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<DIV>I am now using ICA to identify the components of mixed spectra. But one sharp peak of some mixed spectra is a few wavenumber shifts of that of ther other mixed spectra. So, when ICA is applied to identify the components, there would be two ICs who are similar but only a few wavenumber shifted. </DIV>
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<DIV>I do not how to deal with this situation. I have used some preprocessing methods to deal with the shift problem. But it still did not work. I wonder whether there are some efficient methods, no matter preprocessing, change of ICA algorithm and so on, that can solve this problem.</DIV>
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<DIV>Thank you very much for your help.</DIV>
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<DIV>Best wishes!</DIV>
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<DIV>LIN </DIV>
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