- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello,
It seems than the MeanStdDev function doesn't calculate the standard deviation following the documentation. After doing a simple test I noticed that the result value is divided by the length of the imput vector and not "length - 1" as it was written on the documentation.
I used the following vector for my test: vec[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
I'm using IPP version 2019.0.5
Is it a known issue?
- Tags:
- Development Tools
- General Support
- Intel® Integrated Performance Primitives
- Parallel Computing
- Vectorization
Link Copied
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello,
the quick checking with the current ( latest) IPP 2020 shown the following results with ippsMeanStdDev_64f function.
>_tese.exe
========================================================================
version of IPP is: ippIP AVX2 (l9) 2020.0.0 Gold (r0x0f66e7e3) 2020.0.0.258402275
========================================================================
... ippsMeanStdDev_64f PASSED ...
...Mean == 4.500000, ... StdDev == 3.027650 ...
Do you see the same outputs?
-Gennady
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
My outputs are: Mean = 4.500000, StdDev = 2.8722813232690143 .
I'm expected the same outputs as yours so I will update my version.
Thanks for your help =)
Cheers,
Pierre
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page