2026
Factorization-in-Loop:Proximal Fill-in Minimization for Sparse Matrix Reordering
AAAI 2026technical
Fill-ins are new nonzero elements in the summation of the upper and lower triangular factors generated during LU factorization. For large sparse matrices, they will increase the memory usage and computational time, and be reduced through proper row or column arrangement, namely matrix reordering. Fi