Path: news.mathworks.com!not-for-mail
From: "vicky " <vivek_mutalik@yahoo.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Is this kind of regression possible?
Date: Wed, 2 Jan 2008 23:40:32 +0000 (UTC)
Organization: University of California, San Francisco
Lines: 14
Message-ID: <flh7dg$8dc$1@fred.mathworks.com>
References: <fio8nm$6k4$1@fred.mathworks.com> <fior8p$asa$1@fred.mathworks.com> <flfcpq$nf8$1@fred.mathworks.com> <flh50h$kun$1@fred.mathworks.com>
Reply-To: "vicky " <vivek_mutalik@yahoo.com>
NNTP-Posting-Host: webapp-02-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1199317232 8620 172.30.248.37 (2 Jan 2008 23:40:32 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Wed, 2 Jan 2008 23:40:32 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 998324
Xref: news.mathworks.com comp.soft-sys.matlab:444115


"Bruno Luong" 
> The algebric solution W=pinv(M)*Y is what one obtains with a
> gradient algorithm starting from 0 as first-guess.
> 
> If you want an equivalent algebric solution to a
> minimization from a first guess W0, do the following:
> 
> W = W0 + pinv(M)*(Y-M*W0)
> 

What's 'M' here ? Wo is initial guess for nucleotides ; Y is
my response (activity);