threshold for GUI display
gilles.plourde@mcgill.ca
Posted on 03/17/08 13:17:28
Number of posts: 23
Gilles
I want to use a 99 percentile threshold instead of the default and I tried to find where the info in the PETresult file. I think that the data are in boot_result.compare for the bootstrap ratio and in boot_result.original_sal for the LV since I got matching min and max values between the threshold values of the GUI display and the info from the min and max commands executed in the Matlab in the command window. In the case of the bootstrap ratio, the 95 percentile shown in the GUI display is the same as the one I get with the command percentile (boot_result.compare, 95), as expected.
For the LV data however the command percentile (boot_result.original_sal, 95) yields a higher value than the one shown in the GUI display, which in the about 88 percentile of the boot_result.original_sal. Could you help me find the cause of the apparent mismatch?
I use PLS version 5.0802011 running on an Intel Mac (OS 10.4.11). Matlab 7.5 R2007b.
Thank you
Gilles
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jshen
Posted on 03/18/08 11:00:09
Number of posts: 291
For BSR threshold, we use 95 percentile as default. However, for BLV threshold, we use (abs(max_blv) + abs(min_blv)) / 6 as default. There is no particular reason for choosing them differently. It's nothing but one of many values that you can choose. You can always change the default value using by your own criteria.
By the way, the very original program that PLSgui derived from has been set this way.
threshold for GUI display
gilles.plourde@mcgill.ca
Posted on 03/18/08 12:22:47
Number of posts: 23
Gilles
Thank you. Is there a way to change the threshold calculation method used by default?
Gilles
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jshen
Posted on 03/18/08 12:28:06
Number of posts: 291
Since all other people are comfortable with the default values, we are not planning to change the default values. However, as I mentioned earlier, you can always change the threshold criteria by yourself as an individual case.