Domain Error with negative sqrt.

[fluxml]

Domain Error with negative sqrt.

[yuehhua]

Within GCN convolution layer, a inverse squared degree matrix is computed. This matrix is computed for normalized graph Laplacian. If the degree of each vertex becomes negative, this makes it happen to compute over the square root of a negative number. You may want to check the degree of each vertex not to be a negative value to avoid this error.

in at GeometricFlux\k4atN\src\layers\conv.jl:48
in normalized_laplacian##kw at GeometricFlux\k4atN\src\graph\featuredgraphs.jl:133
in #normalized_laplacian#104 at GeometricFlux\k4atN\src\graph\featuredgraphs.jl:133
in at GeometricFlux\k4atN\src\operations\linalg.jl:127
in #normalized_laplacian#85 at GeometricFlux\k4atN\src\operations\linalg.jl:128
in _normalized_laplacian at GeometricFlux\k4atN\src\operations\linalg.jl:133
in inv_sqrt_degree_matrix##kw at GeometricFlux\k4atN\src\operations\linalg.jl:98
in #inv_sqrt_degree_matrix#83 at GeometricFlux\k4atN\src\operations\linalg.jl:98