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- Newsgroups: sci.math.stat
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!uchinews!quads!ngo1
- From: ngo1@quads.uchicago.edu (hang-yue ngo)
- Subject: LS with linear constraints
- Message-ID: <1992Nov20.182350.8925@midway.uchicago.edu>
- Followup-To: ngo1@midway.uchicago.edu
- Keywords: least squares
- Sender: news@uchinews.uchicago.edu (News System)
- Reply-To: ngo1@midway.uchicago.edu
- Organization: University of Chicago
- Distribution: usa
- Date: Fri, 20 Nov 1992 18:23:50 GMT
- Lines: 15
-
- I have a problem: minimize (Y - Xb)'(Y - Xb) with respect to b
- subject to Cb = d. b is a px1 vector and C is a qxp matrix.
- The matrix X may not be full rank (i.e., rank(X) = r < p).
-
- A solution is given in Kennedy and Gentle, the solution is
-
- b = (X'X + C'C)^{-1} X'Y.
-
- Can anyone show me other methods/solutions to this constrained
- LS problem? Thanks in advance.
-
- H.Y. Ngo
- ngo1@midway.uchicago.edu
-
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-