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From Mike Zhou <>
Subject [MATH] Linear equation [A] [X] = [B] solution using Sparse Matrix
Date Wed, 08 Dec 2010 21:49:16 GMT

I am trying to use common math library to solve large-scale liner equation
with sparse structure. Use the SpareRealMatrix interface
and OpenMapRealMatrix implementation, I defined my matrix. Then using the LU

new LUDecompositionImpl(A).getSolver().solve(B)

I could find the solution. However, the LU based solution seems to be very
slow. I guess, it solves the sparse matrix as a full matrix.


- Does the LUComposition implementation take full advantage of the sparse
matrix structure
- If yes, where I might be wrong?

I am using common math lib 2.1.

Thanks, Mike Zhou

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