exx8 / tau_swp_pca

tau_swp_pca

software project task 1. ended @23 of april 2020. project is done

tau_swp_pca's Issues

calculate mean once instead of 2n-1

in:

tau_swp_pca/main.c

Line 23 in c05f7f7

double rowMeanArr1 = rowMean(row1, rowLength);

we calc for each line the avg 2n-1 times. instead taking it out and calc it once.
So what we need to do is to extract the avg calc out of the func (and rename to something much more specific). and then pass the arr of results into the func.

fix ERROR: Covariance header states

Checking covariance matrix...
Input file:
        Size: 808
        Cols: 10
        Rows: 10
Expected covariance:
        Size: 808
        Cols: 10
        Rows: 10
ERROR: Covariance header states 1668180259 cols instead of 10

cov matrix isn't right

Checking covariance matrix...
Input file:
Size: 808
Cols: 10
Rows: 10
Expected covariance:
Size: 808
Cols: 10
Rows: 10
ERROR: Difference in row 0 col 0, value is 651135.600000 but should be 568782718760.255859

asymmetric matrix handling

Checking covariance matrix...
Input file:
        Size: 32016008
        Cols: 2000
        Rows: 2001
Expected covariance:
        Size: 32032016
        Cols: 2001
        Rows: 2001
ERROR: Covariance header states 2000 rows instead of 2001

check why asymmetric matrix doesn't pass the program