But due to the L2 equality, with u or v fixed, the constraints are not convex.
As J C W W — ) is complex-valued, the gradient-descent update for the constrained part for W — is obtained by taking the derivative of the cost function J C W with) with respect to W H H [38]. Besides, as we want to keep w21 fixed, the constraint must be applied to the demixing filter w11 only.
Table 6 indicates the rules appropriate to fix the violated constraints.
The sub-gradient descent is an iterative method that generates a sequence of Lagrangian multipliers λ (0 ), λ (1 ), λ (2 ), …, starting from λ (0 ) = 0, where λ (i + 1 ) aims to fix the broken relaxed constraints in the solution of LR(λ (i ) ), by making a step along its sub-gradient vector.
The constraints may fix the surface type or set geometric relations between parts of an object's surface, such as orthogonality, parallelity and others.
These constraints fix the combustion chamber diameter and length as well as the maximum intake area profile.
The analysis of data shown in Figures 9, 10 and 11 provided again the best trade-off for fixing the shape constraint parameters.
We also fixed the power constraint to P ̌ = 20 dBm and used a large-scale attenuation of 0 dB for all users.
Furthermore, it is possible to find all right-maximal e-CCC-Biclusters by fixing the quorum constraint, used to specify the number of rows/genes necessary to identify a model as valid, to the value q = 2.
For example, generating spikes costs energy, and so metabolic constraints might fix the mean spike rate [32] [35].
