Xiao-Wen CHANG

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• COMP 350 Fall
Numerical Computing
• COMP 540 Fall
Matrix Computations
• COMP 642 Winter
Numerical Estimation
•  Software MLAMBDA: MATLAB package for integer least squares ambiguity determination (Released in October 2011/ Last updated in May 2016). This package provides routines to solve the integer least squares problem (in quadratic form) $$\min_{\boldsymbol{x}\in \mathbb{Z}^n} (\boldsymbol{x} - \boldsymbol{a})^T \boldsymbol{W}^{-1} (\boldsymbol{x} - \boldsymbol{a}),$$ where $$\boldsymbol{x}$$ is an integer vector, $$\boldsymbol{a}$$ is a real vector and $$\boldsymbol{W}$$ is a symmetric positive definite matrix. Documentation: Users' Guide Download Package: MLAMBDA_Matlab_2016.zip file (including User's Guide) Citation: If you use this package in your research work to be published, please include explicit mention of our following work in your publication: [1] X.-W. Chang, MLAMBDA: Matlab Package for Integer Least Squares Ambiguity Determination, http://www.cs.mcgill.ca/~chang/software.php, May 2016. [2] X.-W. Chang, X. Yang, and T. Zhou. MLAMBDA: A modified LAMBDA method for integer least-squares estimation. Journal of Geodesy, 79:552-565, 2005. [3] M. Al Borno, X.-W. Chang, and X. Xie. On "Decorrelation" in Solving Integer Least-Squares Problems for Ambiguity Determination, Survey Review, 46:37-49, 2014.