Algorithm 1 Diffusion-Based SSL With Linear Arrays

%For each array, at each new iteration i, do %Adapt Step ${\mathit{\psi }}_{k,i}={\mathbf{s}}_{k,i-1}-2{\mu }_k{e}_k({\mathbf{s}}_{k,i-1},{\vartheta }_{k,i}){\nabla }_{\mathbf{s}}{e}_k({\mathbf{s}}_{k,i-1},{\vartheta }_{k,i})$ %Select Combination Strategy for each neighbor $l\in {\mathcal{N}}_k$ do    %$\mathrm{Compute}\mathrm{Penalty}\mathrm{Factor}$ ${\phi }_{l,i}$ $\mathrm{according}\mathrm{to}$(18)–(20)    ${\gamma }_{l,i}=(1-\zeta ){\gamma }_{l,i-1}+\zeta {\phi }_{l,i}$    $w_{lk,i}={\displaystyle \frac{1}{{\gamma }_{l,i}}}{\left({\sum }_{l\in {\mathcal{N}}_k}{\displaystyle \frac{1}{{\gamma }_{l,i}}}\right)}^{-1},\mathrm{if}l\in {\mathcal{N}}_k$ end for %Combine Step ${\mathbf{s}}_{k,i}={\sum }_{l\in {\mathcal{N}}_k}{w}_{lk,i}{\mathit{\psi }}_{l,i}$