English to Russian Science Mathematics & Statistics

Marker selection
This part was to select the N most informative markers (e.g., N is 5000) from the total raw marker space (117K).
This explored a cost-efficient and precise array of markers to sample the blood cell for sequential blood-sample categorization.
Further modifications included enlarging the N value or duplicate the same set of markers (i.e., place each of 5000 markets in two different locations) to increase the signal-to-noise ratio (SNR) in blood-cell sampling.
Step 1:
Independent component analysis (ICA)
***The ICA found an ‘unmixing’ matrix W that linearly unmixed the input data matrix X (7176 x 117K) into a spatially independent source matrix U, where U=WX.***
The rows of estimated source matrix U (component activations) were the waveforms of the corresponding ICs along each of the markers.
At this step, the ICA analysis returned 7176 components for further analysis.

Что-то я с матрицами тут запутался, что с чем "смешивается". Заранее спасибо.