
And solving the linear equation system when the system matrix is a triangular matrix is very efficient!# Normal equations:(J^TJ)x = J^Ty# This is exactly our Ax = b where:A = J^TJ # symmetric positive definite!b = J^Ty# Solve using Cholesky:A = LL^T # Cholesky decompositionLy = b # Forward substitutionL^Tx = y # Backward substitution # For n×n system:General matrix: O(n³) # Using Gaussian elimin..
Research (연구 관련)
2025. 2. 17. 12:06
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