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The memory requirements in the M-step include two three-dimensional matrices for saving and and two two-dimensional matrices for saving the denominators of (19).
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The memory requirements in the E-step include a four-dimensional matrix for saving and a three-dimensional matrix for saving the normalization parameter (denominator of (11)).
An H-register, employed for saving a specific H-matrix selected from the four H-matrices, prevents accessing of the non-volatile memory frequently during the communication time.
As indicated in [6], directly employing the lookup tables for saving multiple H-matrices is always prohibitive.
This is still suboptimal, because for saving the Jacobian and other expansion matrices, a large amount of memory is required.
For example, for saving the normalization parameters, we need a -dimensional matrix which contains elements.
The first way is for saving cost.
Set concrete goals for saving.
For computational purposes, this approach also avoids more computations by using sparse operational matrices and saves much memory.
The final matrix is saved by clicking the "Save Matrix" button.
In the matrix inversion process, using the reduced weight matrix can save lots of time compared with the original weight matrix.
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