source: trunk/c++_tools/statistics/NaiveWeighted.cc @ 675

Last change on this file since 675 was 675, checked in by Jari Häkkinen, 15 years ago

References #83. Changing project name to yat. Compilation will fail in this revision.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.4 KB
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1// $Id: NaiveWeighted.cc 675 2006-10-10 12:08:45Z jari $
2
3/*
4  Copyright (C) The authors contributing to this file.
5
6  This file is part of the yat library, http://lev.thep.lu.se/trac/yat
7
8  The yat library is free software; you can redistribute it and/or
9  modify it under the terms of the GNU General Public License as
10  published by the Free Software Foundation; either version 2 of the
11  License, or (at your option) any later version.
12
13  The yat library is distributed in the hope that it will be useful,
14  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  General Public License for more details.
17
18  You should have received a copy of the GNU General Public License
19  along with this program; if not, write to the Free Software
20  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
21  02111-1307, USA.
22*/
23
24#include "yat/statistics/NaiveWeighted.h"
25
26#include "yat/statistics/AveragerWeighted.h"
27#include "yat/statistics/OneDimensional.h"
28#include "yat/utility/vector.h"
29
30
31namespace theplu {
32namespace statistics {
33namespace regression {
34
35
36  void NaiveWeighted::fit(const utility::vector& x,
37                  const utility::vector& y,
38                  const utility::vector& w)
39  {
40    AveragerWeighted a;
41    for (size_t i=0; i<y.size(); i++)
42      a.add(y(i), w(i));
43    m_=a.mean();
44    m_err_=a.standard_error();
45    s2_=m_err_*m_err_*w.sum(); 
46  }
47
48
49}}} // of namespaces regression, statisitcs and thep
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