School of Computer Science

Xiao-Wen CHANG

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  • COMP 350 Fall
    Numerical Computing
  • COMP 540 Fall
    Matrix Computations
  • COMP 642 Winter
    Numerical Estimation
  • Software

    Routines for solving the standard integer least squares problem$$ \min_{\boldsymbol{x} \in \mathbb{Z}^n}\|\boldsymbol{y}-\boldsymbol{B}\boldsymbol{x}\|_2, $$ where \(\boldsymbol{B}\) is a real matrix with full column rank, and \(\boldsymbol{y}\) is a real vector (June 2016):

    sils.m (driver routine), sils_reduction.m, qrmcp.m, sils_search.m

    Contributors: Xiao-Wen Chang, Xiangyu Ren, Xiaohu Xie, Tianyang Zhou

    The routines use the algorithms proposed in the following papers:

    [1] X. Xie, X.-W. Chang, and M. Al Borno. Partial LLL reduction, Proceedings of IEEE GLOBECOM 2011, 5 pages.

    [2] X.-W. Chang, X. Yang, and T. Zhou. MLAMBDA: A Modified LAMBDA Method for Integer Least-squares Estimation, Journal of Geodesy, 79 (2005), pp. 552-565.

    [3] A. Ghasemmehdi and E. Agrell. Faster Recursions in Sphere Decoding, IEEE Transactions on Information Theory, 57 (2011), pp. 3530-3536.