torch_lu_unpack function

Lu_unpack

torch_lu_unpack(LU_data, LU_pivots, unpack_data = TRUE, unpack_pivots = TRUE)

Arguments

• LU_data: (Tensor) – the packed LU factorization data
• LU_pivots: (Tensor) – the packed LU factorization pivots
• unpack_data: (logical) – flag indicating if the data should be unpacked. If FALSE, then the returned L and U are NULL Default: TRUE
• unpack_pivots: (logical) – flag indicating if the pivots should be unpacked into a permutation matrix P. If FALSE, then the returned P is None. Default: TRUE

lu_unpack(LU_data, LU_pivots, unpack_data = TRUE, unpack_pivots=TRUE) -> Tensor

Unpacks the data and pivots from a LU factorization of a tensor into tensors L and U and a permutation tensor P such that LU_data_and_pivots <- torch_lu(P$matmul(L)$matmul(U)). Returns a list of tensors as list(the P tensor (permutation matrix), the L tensor, the U tensor)