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Techniques of Model-Based Control by Babu Joseph, Coleman Brosilow

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Appendix C. Review of Linear Least-Squares Regression

Objectives

The objective of this appendix is to briefly review the theory of linear least-squares. Topics discussed include

  • The concept of linear least-squares solution.

  • Properties of the least-squares estimates.

  • Overcoming collinearity problems with principal component and partial least-squares regression.

Derivation of the Linear Least-Squares Estimate

The problem of finding a least-squares solution to a set of linear equations arises at a number of places in this text.

  • In process identification where we want to determine parameters in a linear model from empirical data.

  • In model-predictive control where we want to determine the control moves that will minimize the future deviations of the output ...

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