Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 2011 Eric Nichols <epnichols@gmail.com> 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program is distributed in the hope that it will be useful, 00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 #if !defined(__statistics_h) 00020 #define __statistics_h 00021 00022 00023 #include <cmath> 00024 #include <cstdio> 00025 #include <vector> 00026 #include <limits> 00027 #include <marsyas/common_header.h> 00028 #include <marsyas/realvec.h> 00029 00030 namespace Marsyas 00031 { 00039 class marsyas_EXPORT statistics 00040 { 00041 private: 00042 static mrs_real momentN(const realvec& zData, const realvec& weights, int n); 00043 static realvec zDataWeighted(const realvec& data, const realvec& weights, mrs_real mean); 00044 00045 public: 00046 00047 statistics(); 00048 ~statistics(); 00049 00050 static mrs_real meanWeighted(const realvec& data, const realvec& weights); 00051 static mrs_real stddevWeighted(const realvec& data, const realvec& weights, mrs_real mean); 00052 static mrs_real varWeighted(const realvec& data, const realvec& weights, mrs_real mean); 00053 static mrs_real skewnessWeighted(const realvec& data, const realvec& weights, mrs_real mean); 00054 static mrs_real kurtosisWeighted(const realvec& data, const realvec& weights, mrs_real mean); 00055 }; 00056 00057 00058 } //namespace Marsyas 00059 00060 #endif //__statistics_h