Fig. 2
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Sparsity patterns of Λ, Σ, and Id – ΛΣ using Ns = 10, Nθ = 2, Nχ = 1, and Νν = 10, i.e., N2 = 8002 = 6.4 × 105 elements. The corresponding number of nonzero elements (nz) is reported. The elements in the lower and upper triangular parts of Id – ΛΣ correspond to downward (negative µ) and upward (positive µ) directions, respectively.
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