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help > RE: CONN connectivity results are not reproducing
Apr 13, 2018 02:04 PM | Ekaterina Kondrateva - Skoltech
RE: CONN connectivity results are not reproducing
Dear Alfonso,
My apologies for such a long response, I was retesting the experiment that was described previously on different machines.
Thus to conclude:
1. the results are 100% reproducible on one machine in time, it was just my bad: I've used *.nii structural files stacked in different software (SPM and Nibabel for the 3D image retrieval from DICOM). And it leads to some bias, that I've referred to CONN processing.
2. the results are not reproducing on different machines, indeed; and the bias is related to the processor core. On our test, the maximum Mean Average Percentage Error (MAPE) of the functional connectivity graph analysis results reached 8%.
Attaching the archive with 5 *.mat files (4 subjects in each). These files were processed with default settings on 5 different machines and should produce identical results: 1. Core i5, Win10 2. Core i5, macOS 3. Pentium, Linux, 4. and 5. Core i7, Win 10.
Could you please have a brief look if you can spot the differences?
Thanks so much!
Warm regards, Kate
My apologies for such a long response, I was retesting the experiment that was described previously on different machines.
Thus to conclude:
1. the results are 100% reproducible on one machine in time, it was just my bad: I've used *.nii structural files stacked in different software (SPM and Nibabel for the 3D image retrieval from DICOM). And it leads to some bias, that I've referred to CONN processing.
2. the results are not reproducing on different machines, indeed; and the bias is related to the processor core. On our test, the maximum Mean Average Percentage Error (MAPE) of the functional connectivity graph analysis results reached 8%.
Attaching the archive with 5 *.mat files (4 subjects in each). These files were processed with default settings on 5 different machines and should produce identical results: 1. Core i5, Win10 2. Core i5, macOS 3. Pentium, Linux, 4. and 5. Core i7, Win 10.
Could you please have a brief look if you can spot the differences?
Thanks so much!
Warm regards, Kate
Threaded View
Title | Author | Date |
---|---|---|
Ekaterina Kondrateva | Nov 28, 2017 | |
Alfonso Nieto-Castanon | Nov 28, 2017 | |
Ekaterina Kondrateva | Apr 13, 2018 | |
Alfonso Nieto-Castanon | Apr 16, 2018 | |
Ekaterina Kondrateva | Apr 19, 2018 | |
Stephen L. | Apr 10, 2018 | |
Vasudev Devulapally | Nov 28, 2017 | |
Ekaterina Kondrateva | Nov 28, 2017 | |
Stephen L. | Mar 26, 2018 | |
Ekaterina Kondrateva | Apr 10, 2018 | |
Stephen L. | Apr 10, 2018 | |
Ekaterina Kondrateva | Apr 13, 2018 | |
Stephen L. | Apr 13, 2018 | |
Ekaterina Kondrateva | Apr 16, 2018 | |
Vasudev Devulapally | Nov 28, 2017 | |