Timeline for Is it possible to perform PCA on a multimensional array?
Current License: CC BY-SA 2.5
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| Mar 30, 2018 at 6:00 | history | edited | YCor |
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| Mar 30, 2018 at 5:59 | comment | added | YCor | PCA = Principal component analysis en.wikipedia.org/wiki/Principal_component_analysis | |
| Mar 30, 2018 at 1:08 | answer | added | Manel Martínez-Ramón | timeline score: 1 | |
| Feb 7, 2011 at 21:44 | comment | added | David Roberts♦ | Look at any linear algebra book advanced enough to mention tensors. You'll see that it all boils down to matrices in the end, so yes, you can do it. As for specifics (implementations and software and whatnot), I'm not sure if this is the Q&A site for you. | |
| Feb 7, 2011 at 21:10 | comment | added | Gilead | Look into Multiway PCA, PARAFAC and Tucker-3 decompositions. Most decomposition methods require you to "unfold" your multidimensional matrix before performing PCA. A few years ago I was a talk where it was claimed that it was possible to perform PCA directly on a n-dimensional matrix, but there were something underlying assumptions that had to be made regarding its interpretation. My knowledge in this area is not the most up to date, so someone please correct me if I'm wrong. Also I recommend asking this question on stats.stackexchange.com | |
| Feb 7, 2011 at 20:52 | history | asked | ximixanga | CC BY-SA 2.5 |