Show
Ignore:
Timestamp:
02/09/09 23:08:46 (16 years ago)
Author:
smidl
Message:

doc

Files:
1 modified

Legend:

Unmodified
Added
Removed

  • doc/html/libPF_8h-source.html

    r255 r261  
    11<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
    22<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> 
    3 <title>mixpp: work/git/mixpp/bdm/estim/libPF.h Source File</title> 
     3<title>mixpp: libPF.h Source File</title> 
    44<link href="doxygen.css" rel="stylesheet" type="text/css"> 
    55<link href="tabs.css" rel="stylesheet" type="text/css"> 
    … …  
    1212      <li><a href="pages.html"><span>Related&nbsp;Pages</span></a></li> 
    1313      <li><a href="modules.html"><span>Modules</span></a></li> 
    14       <li><a href="annotated.html"><span>Classes</span></a></li> 
     14      <li><a href="namespaces.html"><span>Namespaces</span></a></li> 
     15      <li><a href="classes.html"><span>Classes</span></a></li> 
    1516      <li class="current"><a href="files.html"><span>Files</span></a></li> 
    1617    </ul> 
    1718  </div> 
    18 <h1>work/git/mixpp/bdm/estim/libPF.h</h1><a href="libPF_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001  
     19<h1>libPF.h</h1><a href="libPF_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001  
    1920<a name="l00013"></a>00013 <span class="preprocessor">#ifndef PF_H</span> 
    2021<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#define PF_H</span> 
    2122<a name="l00015"></a>00015 <span class="preprocessor"></span> 
    22 <a name="l00016"></a>00016 <span class="preprocessor">#include &lt;itpp/itbase.h&gt;</span> 
     23<a name="l00016"></a>00016  
    2324<a name="l00017"></a>00017 <span class="preprocessor">#include "../stat/libEF.h"</span> 
    24 <a name="l00018"></a>00018 <span class="preprocessor">#include "../math/libDC.h"</span> 
    25 <a name="l00019"></a>00019  
    26 <a name="l00020"></a>00020 <span class="keyword">namespace </span>bdm{ 
    27 <a name="l00021"></a>00021  
    28 <a name="l00028"></a><a class="code" href="classbdm_1_1PF.html">00028</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1PF.html" title="Trivial particle filter with proposal density equal to parameter evolution model...">PF</a> : <span class="keyword">public</span> <a class="code" href="classbdm_1_1BM.html" title="Bayesian Model of the world, i.e. all uncertainty is modeled by probabilities.">BM</a> { 
    29 <a name="l00029"></a>00029 <span class="keyword">protected</span>: 
    30 <a name="l00031"></a><a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe">00031</a>         <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>; 
    31 <a name="l00033"></a><a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af">00033</a>         <a class="code" href="classbdm_1_1eEmp.html" title="Weighted empirical density.">eEmp</a> <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>; 
    32 <a name="l00035"></a><a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3">00035</a>         vec &amp;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>; 
    33 <a name="l00037"></a><a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1">00037</a>         Array&lt;vec&gt; &amp;<a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a>; 
    34 <a name="l00039"></a><a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34">00039</a>         <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;<a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34" title="Parameter evolution model.">par</a>; 
    35 <a name="l00041"></a><a class="code" href="classbdm_1_1PF.html#c58b8fa634272c3f48845a9020ba55aa">00041</a>         <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;<a class="code" href="classbdm_1_1PF.html#c58b8fa634272c3f48845a9020ba55aa" title="Observation model.">obs</a>; 
    36 <a name="l00042"></a>00042 <span class="keyword">public</span>: 
    37 <a name="l00044"></a><a class="code" href="classbdm_1_1PF.html#df9e7dc54dbe1c78a4aa503c42f7f8c4">00044</a>         <a class="code" href="classbdm_1_1PF.html#df9e7dc54dbe1c78a4aa503c42f7f8c4" title="Default constructor.">PF</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rv0, <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;par0,  <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;obs0, <span class="keywordtype">int</span> n0 ) :<a class="code" href="classbdm_1_1BM.html" title="Bayesian Model of the world, i.e. all uncertainty is modeled by probabilities.">BM</a> ( rv0 ), 
    38 <a name="l00045"></a>00045                         <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ( n0 ),<a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a> ( rv0,<a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ),<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>.<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>() ),<a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>.<a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a>() ), 
    39 <a name="l00046"></a>00046                         <a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34" title="Parameter evolution model.">par</a> ( par0 ), <a class="code" href="classbdm_1_1PF.html#c58b8fa634272c3f48845a9020ba55aa" title="Observation model.">obs</a> ( obs0 ) {}; 
    40 <a name="l00047"></a>00047  
    41 <a name="l00049"></a>00049         <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1PF.html#6f1988db4c3f602d187a6c15ec89cb1e" title="Set posterior density by sampling from epdf0.">set_est</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a> &amp;epdf0 ); 
    42 <a name="l00050"></a>00050         <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1PF.html#638946eea22d4964bf9350286bb4efd8" title="Incremental Bayes rule.">bayes</a> ( <span class="keyword">const</span> vec &amp;dt ); 
    43 <a name="l00052"></a><a class="code" href="classbdm_1_1PF.html#78a9f6809827be1d9bfe215d03b1c6ed">00052</a>         vec* <a class="code" href="classbdm_1_1PF.html#78a9f6809827be1d9bfe215d03b1c6ed" title="access function">__w</a>(){<span class="keywordflow">return</span> &amp;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>;} 
    44 <a name="l00053"></a>00053 }; 
    45 <a name="l00054"></a>00054  
    46 <a name="l00061"></a>00061 <span class="keyword">template</span>&lt;<span class="keyword">class</span> BM_T&gt; 
    47 <a name="l00062"></a>00062  
    48 <a name="l00063"></a><a class="code" href="classbdm_1_1MPF.html">00063</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1MPF.html" title="Marginalized Particle filter.">MPF</a> : <span class="keyword">public</span> <a class="code" href="classbdm_1_1PF.html" title="Trivial particle filter with proposal density equal to parameter evolution model...">PF</a> { 
    49 <a name="l00064"></a>00064         BM_T* Bms[10000]; 
    50 <a name="l00065"></a>00065  
    51 <a name="l00067"></a>00067  
    52 <a name="l00068"></a>00068 <span class="keyword">class </span>mpfepdf : <span class="keyword">public</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>  { 
    53 <a name="l00069"></a>00069         <span class="keyword">protected</span>: 
    54 <a name="l00070"></a>00070                 <a class="code" href="classbdm_1_1eEmp.html" title="Weighted empirical density.">eEmp</a> &amp;E; 
    55 <a name="l00071"></a>00071                 vec &amp;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>; 
    56 <a name="l00072"></a>00072                 Array&lt;const epdf*&gt; Coms; 
    57 <a name="l00073"></a>00073         <span class="keyword">public</span>: 
    58 <a name="l00074"></a>00074                 mpfepdf ( <a class="code" href="classbdm_1_1eEmp.html" title="Weighted empirical density.">eEmp</a> &amp;E0, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvc ) : 
    59 <a name="l00075"></a>00075                                 <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a> ( <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a>( ) ), E ( E0 ),  <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( E._w() ), 
    60 <a name="l00076"></a>00076                                 Coms ( <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>.length() ) { 
    61 <a name="l00077"></a>00077                         <a class="code" href="classbdm_1_1BM.html#18d6db4af8ee42077741d9e3618153ca" title="Random variable of the posterior.">rv</a>.<a class="code" href="classbdm_1_1RV.html#87841b5ee43997b79789c0c22047e224" title="Add (concat) another variable to the current one,.">add</a> ( E._rv() ); 
    62 <a name="l00078"></a>00078                         <a class="code" href="classbdm_1_1BM.html#18d6db4af8ee42077741d9e3618153ca" title="Random variable of the posterior.">rv</a>.<a class="code" href="classbdm_1_1RV.html#87841b5ee43997b79789c0c22047e224" title="Add (concat) another variable to the current one,.">add</a> ( rvc ); 
    63 <a name="l00079"></a>00079                 }; 
    64 <a name="l00080"></a>00080  
    65 <a name="l00081"></a>00081                 <span class="keywordtype">void</span> set_elements ( <span class="keywordtype">int</span> &amp;i, <span class="keywordtype">double</span> wi, <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>* ep ) 
    66 <a name="l00082"></a>00082                 {<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i ) =wi; Coms ( i ) =ep;}; 
    67 <a name="l00083"></a>00083  
    68 <a name="l00084"></a>00084                 vec mean()<span class="keyword"> const </span>{ 
    69 <a name="l00085"></a>00085                         <span class="comment">// ugly</span> 
    70 <a name="l00086"></a>00086                         vec pom=zeros ( ( Coms ( 0 )-&gt;<a class="code" href="classbdm_1_1BM.html#40a3c891996391e3135518053a917793" title="access function">_rv</a>() ).count() ); 
    71 <a name="l00087"></a>00087                         <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0; i&lt;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>.length(); i++ ) {pom += Coms ( i )-&gt;mean() * <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i );} 
    72 <a name="l00088"></a>00088                         <span class="keywordflow">return</span> concat ( E.mean(),pom ); 
    73 <a name="l00089"></a>00089                 } 
    74 <a name="l00090"></a>00090                 vec variance()<span class="keyword"> const </span>{ 
    75 <a name="l00091"></a>00091                         <span class="comment">// ugly</span> 
    76 <a name="l00092"></a>00092                         vec pom=zeros ( ( Coms ( 0 )-&gt;<a class="code" href="classbdm_1_1BM.html#40a3c891996391e3135518053a917793" title="access function">_rv</a>() ).count() ); 
    77 <a name="l00093"></a>00093                         vec pom2=zeros ( ( Coms ( 0 )-&gt;<a class="code" href="classbdm_1_1BM.html#40a3c891996391e3135518053a917793" title="access function">_rv</a>() ).count() ); 
    78 <a name="l00094"></a>00094                         <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0; i&lt;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>.length(); i++ ) { 
    79 <a name="l00095"></a>00095                                 pom += Coms ( i )-&gt;mean() * <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i ); 
    80 <a name="l00096"></a>00096                                 pom2 += (Coms ( i )-&gt;variance() + pow(Coms(i)-&gt;mean(),2)) * <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i );} 
    81 <a name="l00097"></a>00097                         <span class="keywordflow">return</span> concat ( E.variance(),pom2-pow(pom,2) ); 
    82 <a name="l00098"></a>00098                 } 
    83 <a name="l00099"></a>00099  
    84 <a name="l00100"></a>00100                 vec sample()<span class="keyword"> const </span>{it_error ( <span class="stringliteral">"Not implemented"</span> );<span class="keywordflow">return</span> 0;} 
    85 <a name="l00101"></a>00101  
    86 <a name="l00102"></a>00102                 <span class="keywordtype">double</span> evallog ( <span class="keyword">const</span> vec &amp;val )<span class="keyword"> const </span>{it_error ( <span class="stringliteral">"not implemented"</span> ); <span class="keywordflow">return</span> 0.0;} 
    87 <a name="l00103"></a>00103         }; 
    88 <a name="l00104"></a>00104  
    89 <a name="l00106"></a>00106         mpfepdf jest; 
    90 <a name="l00107"></a>00107  
    91 <a name="l00108"></a>00108 <span class="keyword">public</span>: 
    92 <a name="l00110"></a><a class="code" href="classbdm_1_1MPF.html#e2a00c2399599c3613ab632fc36a1f79">00110</a>         <a class="code" href="classbdm_1_1MPF.html#e2a00c2399599c3613ab632fc36a1f79" title="Default constructor.">MPF</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvlin, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvpf, <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;par0, <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;obs0, <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>, <span class="keyword">const</span> BM_T &amp;BMcond0 ) : <a class="code" href="classbdm_1_1PF.html" title="Trivial particle filter with proposal density equal to parameter evolution model...">PF</a> ( rvpf ,par0,obs0,n ),jest ( <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>,rvlin ) { 
    93 <a name="l00111"></a>00111                 <span class="comment">//</span> 
    94 <a name="l00112"></a>00112                 <span class="comment">//TODO test if rv and BMcond.rv are compatible.</span> 
    95 <a name="l00113"></a>00113                 <a class="code" href="classbdm_1_1BM.html#18d6db4af8ee42077741d9e3618153ca" title="Random variable of the posterior.">rv</a>.<a class="code" href="classbdm_1_1RV.html#87841b5ee43997b79789c0c22047e224" title="Add (concat) another variable to the current one,.">add</a> ( rvlin ); 
    96 <a name="l00114"></a>00114                 <span class="comment">//</span> 
    97 <a name="l00115"></a>00115  
    98 <a name="l00116"></a>00116                 <span class="keywordflow">if</span> ( n&gt;10000 ) {it_error ( <span class="stringliteral">"increase 10000 here!"</span> );} 
    99 <a name="l00117"></a>00117  
    100 <a name="l00118"></a>00118                 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0;i&lt;n;i++ ) { 
    101 <a name="l00119"></a>00119                         Bms[i] = <span class="keyword">new</span> BM_T ( BMcond0 ); <span class="comment">//copy constructor</span> 
    102 <a name="l00120"></a>00120                         <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; pom=Bms[i]-&gt;_epdf(); 
    103 <a name="l00121"></a>00121                         jest.set_elements ( i,1.0/n,&amp;pom ); 
    104 <a name="l00122"></a>00122                 } 
    105 <a name="l00123"></a>00123         }; 
    106 <a name="l00124"></a>00124  
    107 <a name="l00125"></a>00125         ~<a class="code" href="classbdm_1_1MPF.html" title="Marginalized Particle filter.">MPF</a>() { 
    108 <a name="l00126"></a>00126         } 
    109 <a name="l00127"></a>00127  
    110 <a name="l00128"></a>00128         <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1MPF.html#286d040770d08bd7ff416cea617b1b14" title="Incremental Bayes rule.">bayes</a> ( <span class="keyword">const</span> vec &amp;dt ); 
    111 <a name="l00129"></a><a class="code" href="classbdm_1_1MPF.html#2da4cbf7645da52ad5630ada411e3f9f">00129</a>         <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; <a class="code" href="classbdm_1_1MPF.html#2da4cbf7645da52ad5630ada411e3f9f" title="Returns a reference to the epdf representing posterior density on parameters.">_epdf</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> jest;} 
    112 <a name="l00130"></a><a class="code" href="classbdm_1_1MPF.html#1401874aa88a7a3f2593070646779af2">00130</a>         <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>* <a class="code" href="classbdm_1_1MPF.html#1401874aa88a7a3f2593070646779af2" title="Returns a pointer to the epdf representing posterior density on parameters. Use with...">_e</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> &amp;jest;} <span class="comment">//Fixme: is it useful?</span> 
    113 <a name="l00132"></a><a class="code" href="classbdm_1_1MPF.html#dcecdaf2acbbee51acf3018a70989a7e">00132</a> <span class="comment"></span>        <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1MPF.html#dcecdaf2acbbee51acf3018a70989a7e" title="Set postrior of rvc to samples from epdf0. Statistics of Bms are not re-computed!...">set_est</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; epdf0 ) { 
    114 <a name="l00133"></a>00133                 <a class="code" href="classbdm_1_1PF.html#6f1988db4c3f602d187a6c15ec89cb1e" title="Set posterior density by sampling from epdf0.">PF::set_est</a> ( epdf0 );  <span class="comment">// sample params in condition</span> 
    115 <a name="l00134"></a>00134                 <span class="comment">// copy conditions to BMs</span> 
    116 <a name="l00135"></a>00135  
    117 <a name="l00136"></a>00136                 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0;i&lt;<a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>;i++ ) {Bms[i]-&gt;condition ( <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ) );} 
    118 <a name="l00137"></a>00137         } 
    119 <a name="l00138"></a>00138  
    120 <a name="l00140"></a><a class="code" href="classbdm_1_1MPF.html#82b5a34d9ed0e78452f98d2ecbf1e93c">00140</a>         <a class="code" href="classbdm_1_1BM.html" title="Bayesian Model of the world, i.e. all uncertainty is modeled by probabilities.">BM</a>* <a class="code" href="classbdm_1_1MPF.html#82b5a34d9ed0e78452f98d2ecbf1e93c" title="Access function.">_BM</a>(<span class="keywordtype">int</span> i){<span class="keywordflow">return</span> Bms[i];} 
    121 <a name="l00141"></a>00141 }; 
    122 <a name="l00142"></a>00142  
    123 <a name="l00143"></a>00143 <span class="keyword">template</span>&lt;<span class="keyword">class</span> BM_T&gt; 
    124 <a name="l00144"></a><a class="code" href="classbdm_1_1MPF.html#286d040770d08bd7ff416cea617b1b14">00144</a> <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1MPF.html" title="Marginalized Particle filter.">MPF&lt;BM_T&gt;::bayes</a> ( <span class="keyword">const</span> vec &amp;dt ) { 
    125 <a name="l00145"></a>00145         <span class="keywordtype">int</span> i; 
    126 <a name="l00146"></a>00146         vec lls ( <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ); 
    127 <a name="l00147"></a>00147         vec llsP ( <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ); 
    128 <a name="l00148"></a>00148         ivec ind; 
    129 <a name="l00149"></a>00149         <span class="keywordtype">double</span> mlls=-std::numeric_limits&lt;double&gt;::infinity(); 
    130 <a name="l00150"></a>00150  
    131 <a name="l00151"></a>00151 <span class="preprocessor">        #pragma omp parallel for</span> 
    132 <a name="l00152"></a>00152 <span class="preprocessor"></span>        <span class="keywordflow">for</span> ( i=0;i&lt;<a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>;i++ ) {    
    133 <a name="l00153"></a>00153                 <span class="comment">//generate new samples from paramater evolution model;</span> 
    134 <a name="l00154"></a>00154                 <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ) = <a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34" title="Parameter evolution model.">par</a>.<a class="code" href="classbdm_1_1mpdf.html#e4848a428d8ef0549c6e4a9ed386d9f2" title="Returns a sample from the density conditioned on cond, .">samplecond</a> ( <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ), llsP ( i ) ); 
    135 <a name="l00155"></a>00155                 Bms[i]-&gt;condition ( <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ) ); 
    136 <a name="l00156"></a>00156                 Bms[i]-&gt;bayes ( dt ); 
    137 <a name="l00157"></a>00157                 lls ( i ) = Bms[i]-&gt;_ll(); <span class="comment">// lls above is also in proposal her must be lls(i) =, not +=!!</span> 
    138 <a name="l00158"></a>00158                 <span class="keywordflow">if</span> ( lls ( i ) &gt;mlls ) mlls=lls ( i ); <span class="comment">//find maximum likelihood (for numerical stability)</span> 
    139 <a name="l00159"></a>00159         } 
    140 <a name="l00160"></a>00160  
    141 <a name="l00161"></a>00161         <span class="keywordtype">double</span> sum_w=0.0; 
    142 <a name="l00162"></a>00162         <span class="comment">// compute weights</span> 
    143 <a name="l00163"></a>00163 <span class="preprocessor">        #pragma omp parallel for</span> 
    144 <a name="l00164"></a>00164 <span class="preprocessor"></span>        <span class="keywordflow">for</span> ( i=0;i&lt;n;i++ ) { 
    145 <a name="l00165"></a>00165                 <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i ) *= exp ( lls ( i ) - mlls ); <span class="comment">// multiply w by likelihood</span> 
    146 <a name="l00166"></a>00166                 sum_w+=<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>(i); 
    147 <a name="l00167"></a>00167         } 
    148 <a name="l00168"></a>00168  
    149 <a name="l00169"></a>00169         <span class="keywordflow">if</span> ( sum_w  &gt;0.0 ) { 
    150 <a name="l00170"></a>00170                 <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> /=sum_w; <span class="comment">//?</span> 
    151 <a name="l00171"></a>00171         } <span class="keywordflow">else</span> { 
    152 <a name="l00172"></a>00172                 cout&lt;&lt;<span class="stringliteral">"sum(w)==0"</span>&lt;&lt;endl; 
    153 <a name="l00173"></a>00173         } 
     25<a name="l00018"></a>00018  
     26<a name="l00019"></a>00019 <span class="keyword">namespace </span>bdm{ 
     27<a name="l00020"></a>00020  
     28<a name="l00027"></a><a class="code" href="classbdm_1_1PF.html">00027</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1PF.html" title="Trivial particle filter with proposal density equal to parameter evolution model...">PF</a> : <span class="keyword">public</span> <a class="code" href="classbdm_1_1BM.html" title="Bayesian Model of the world, i.e. all uncertainty is modeled by probabilities.">BM</a> { 
     29<a name="l00028"></a>00028 <span class="keyword">protected</span>: 
     30<a name="l00030"></a><a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe">00030</a>         <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>; 
     31<a name="l00032"></a><a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af">00032</a>         <a class="code" href="classbdm_1_1eEmp.html" title="Weighted empirical density.">eEmp</a> <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>; 
     32<a name="l00034"></a><a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3">00034</a>         vec &amp;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>; 
     33<a name="l00036"></a><a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1">00036</a>         Array&lt;vec&gt; &amp;<a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a>; 
     34<a name="l00038"></a><a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34">00038</a>         <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;<a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34" title="Parameter evolution model.">par</a>; 
     35<a name="l00040"></a><a class="code" href="classbdm_1_1PF.html#c58b8fa634272c3f48845a9020ba55aa">00040</a>         <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;<a class="code" href="classbdm_1_1PF.html#c58b8fa634272c3f48845a9020ba55aa" title="Observation model.">obs</a>; 
     36<a name="l00041"></a>00041 <span class="keyword">public</span>: 
     37<a name="l00043"></a><a class="code" href="classbdm_1_1PF.html#df9e7dc54dbe1c78a4aa503c42f7f8c4">00043</a>         <a class="code" href="classbdm_1_1PF.html#df9e7dc54dbe1c78a4aa503c42f7f8c4" title="Default constructor.">PF</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rv0, <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;par0,  <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;obs0, <span class="keywordtype">int</span> n0 ) :<a class="code" href="classbdm_1_1BM.html" title="Bayesian Model of the world, i.e. all uncertainty is modeled by probabilities.">BM</a> ( rv0 ), 
     38<a name="l00044"></a>00044                         <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ( n0 ),<a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a> ( rv0,<a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ),<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>.<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>() ),<a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>.<a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a>() ), 
     39<a name="l00045"></a>00045                         <a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34" title="Parameter evolution model.">par</a> ( par0 ), <a class="code" href="classbdm_1_1PF.html#c58b8fa634272c3f48845a9020ba55aa" title="Observation model.">obs</a> ( obs0 ) {}; 
     40<a name="l00046"></a>00046  
     41<a name="l00048"></a>00048         <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1PF.html#6f1988db4c3f602d187a6c15ec89cb1e" title="Set posterior density by sampling from epdf0.">set_est</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a> &amp;epdf0 ); 
     42<a name="l00049"></a>00049         <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1PF.html#638946eea22d4964bf9350286bb4efd8" title="Incremental Bayes rule.">bayes</a> ( <span class="keyword">const</span> vec &amp;dt ); 
     43<a name="l00051"></a><a class="code" href="classbdm_1_1PF.html#78a9f6809827be1d9bfe215d03b1c6ed">00051</a>         vec* <a class="code" href="classbdm_1_1PF.html#78a9f6809827be1d9bfe215d03b1c6ed" title="access function">__w</a>(){<span class="keywordflow">return</span> &amp;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>;} 
     44<a name="l00052"></a>00052 }; 
     45<a name="l00053"></a>00053  
     46<a name="l00060"></a>00060 <span class="keyword">template</span>&lt;<span class="keyword">class</span> BM_T&gt; 
     47<a name="l00061"></a>00061  
     48<a name="l00062"></a><a class="code" href="classbdm_1_1MPF.html">00062</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1MPF.html" title="Marginalized Particle filter.">MPF</a> : <span class="keyword">public</span> <a class="code" href="classbdm_1_1PF.html" title="Trivial particle filter with proposal density equal to parameter evolution model...">PF</a> { 
     49<a name="l00063"></a>00063         BM_T* Bms[10000]; 
     50<a name="l00064"></a>00064  
     51<a name="l00066"></a>00066  
     52<a name="l00067"></a>00067 <span class="keyword">class </span>mpfepdf : <span class="keyword">public</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>  { 
     53<a name="l00068"></a>00068         <span class="keyword">protected</span>: 
     54<a name="l00069"></a>00069                 <a class="code" href="classbdm_1_1eEmp.html" title="Weighted empirical density.">eEmp</a> &amp;E; 
     55<a name="l00070"></a>00070                 vec &amp;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>; 
     56<a name="l00071"></a>00071                 Array&lt;const epdf*&gt; Coms; 
     57<a name="l00072"></a>00072         <span class="keyword">public</span>: 
     58<a name="l00073"></a>00073                 mpfepdf ( <a class="code" href="classbdm_1_1eEmp.html" title="Weighted empirical density.">eEmp</a> &amp;E0, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvc ) : 
     59<a name="l00074"></a>00074                                 <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a> ( <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a>( ) ), E ( E0 ),  <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( E._w() ), 
     60<a name="l00075"></a>00075                                 Coms ( <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>.length() ) { 
     61<a name="l00076"></a>00076                         <a class="code" href="classbdm_1_1BM.html#18d6db4af8ee42077741d9e3618153ca" title="Random variable of the posterior.">rv</a>.<a class="code" href="classbdm_1_1RV.html#87841b5ee43997b79789c0c22047e224" title="Add (concat) another variable to the current one,.">add</a> ( E._rv() ); 
     62<a name="l00077"></a>00077                         <a class="code" href="classbdm_1_1BM.html#18d6db4af8ee42077741d9e3618153ca" title="Random variable of the posterior.">rv</a>.<a class="code" href="classbdm_1_1RV.html#87841b5ee43997b79789c0c22047e224" title="Add (concat) another variable to the current one,.">add</a> ( rvc ); 
     63<a name="l00078"></a>00078                 }; 
     64<a name="l00079"></a>00079  
     65<a name="l00080"></a>00080                 <span class="keywordtype">void</span> set_elements ( <span class="keywordtype">int</span> &amp;i, <span class="keywordtype">double</span> wi, <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>* ep ) 
     66<a name="l00081"></a>00081                 {<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i ) =wi; Coms ( i ) =ep;}; 
     67<a name="l00082"></a>00082  
     68<a name="l00083"></a>00083                 vec mean()<span class="keyword"> const </span>{ 
     69<a name="l00084"></a>00084                         <span class="comment">// ugly</span> 
     70<a name="l00085"></a>00085                         vec pom=zeros ( ( Coms ( 0 )-&gt;<a class="code" href="classbdm_1_1BM.html#40a3c891996391e3135518053a917793" title="access function">_rv</a>() ).count() ); 
     71<a name="l00086"></a>00086                         <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0; i&lt;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>.length(); i++ ) {pom += Coms ( i )-&gt;mean() * <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i );} 
     72<a name="l00087"></a>00087                         <span class="keywordflow">return</span> <a class="code" href="namespacebdm.html#b9016687c0e874ca5cdcf75ae28811aa" title="Concat two random variables.">concat</a> ( E.mean(),pom ); 
     73<a name="l00088"></a>00088                 } 
     74<a name="l00089"></a>00089                 vec variance()<span class="keyword"> const </span>{ 
     75<a name="l00090"></a>00090                         <span class="comment">// ugly</span> 
     76<a name="l00091"></a>00091                         vec pom=zeros ( ( Coms ( 0 )-&gt;<a class="code" href="classbdm_1_1BM.html#40a3c891996391e3135518053a917793" title="access function">_rv</a>() ).count() ); 
     77<a name="l00092"></a>00092                         vec pom2=zeros ( ( Coms ( 0 )-&gt;<a class="code" href="classbdm_1_1BM.html#40a3c891996391e3135518053a917793" title="access function">_rv</a>() ).count() ); 
     78<a name="l00093"></a>00093                         <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0; i&lt;<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>.length(); i++ ) { 
     79<a name="l00094"></a>00094                                 pom += Coms ( i )-&gt;mean() * <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i ); 
     80<a name="l00095"></a>00095                                 pom2 += (Coms ( i )-&gt;variance() + pow(Coms(i)-&gt;mean(),2)) * <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i );} 
     81<a name="l00096"></a>00096                         <span class="keywordflow">return</span> <a class="code" href="namespacebdm.html#b9016687c0e874ca5cdcf75ae28811aa" title="Concat two random variables.">concat</a> ( E.variance(),pom2-pow(pom,2) ); 
     82<a name="l00097"></a>00097                 } 
     83<a name="l00098"></a>00098  
     84<a name="l00099"></a>00099                 vec sample()<span class="keyword"> const </span>{it_error ( <span class="stringliteral">"Not implemented"</span> );<span class="keywordflow">return</span> 0;} 
     85<a name="l00100"></a>00100  
     86<a name="l00101"></a>00101                 <span class="keywordtype">double</span> evallog ( <span class="keyword">const</span> vec &amp;val )<span class="keyword"> const </span>{it_error ( <span class="stringliteral">"not implemented"</span> ); <span class="keywordflow">return</span> 0.0;} 
     87<a name="l00102"></a>00102         }; 
     88<a name="l00103"></a>00103  
     89<a name="l00105"></a>00105         mpfepdf jest; 
     90<a name="l00106"></a>00106  
     91<a name="l00107"></a>00107 <span class="keyword">public</span>: 
     92<a name="l00109"></a><a class="code" href="classbdm_1_1MPF.html#e2a00c2399599c3613ab632fc36a1f79">00109</a>         <a class="code" href="classbdm_1_1MPF.html#e2a00c2399599c3613ab632fc36a1f79" title="Default constructor.">MPF</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvlin, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvpf, <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;par0, <a class="code" href="classbdm_1_1mpdf.html" title="Conditional probability density, e.g. modeling some dependencies.">mpdf</a> &amp;obs0, <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>, <span class="keyword">const</span> BM_T &amp;BMcond0 ) : <a class="code" href="classbdm_1_1PF.html" title="Trivial particle filter with proposal density equal to parameter evolution model...">PF</a> ( rvpf ,par0,obs0,n ),jest ( <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>,rvlin ) { 
     93<a name="l00110"></a>00110                 <span class="comment">//</span> 
     94<a name="l00111"></a>00111                 <span class="comment">//TODO test if rv and BMcond.rv are compatible.</span> 
     95<a name="l00112"></a>00112                 <a class="code" href="classbdm_1_1BM.html#18d6db4af8ee42077741d9e3618153ca" title="Random variable of the posterior.">rv</a>.<a class="code" href="classbdm_1_1RV.html#87841b5ee43997b79789c0c22047e224" title="Add (concat) another variable to the current one,.">add</a> ( rvlin ); 
     96<a name="l00113"></a>00113                 <span class="comment">//</span> 
     97<a name="l00114"></a>00114  
     98<a name="l00115"></a>00115                 <span class="keywordflow">if</span> ( n&gt;10000 ) {it_error ( <span class="stringliteral">"increase 10000 here!"</span> );} 
     99<a name="l00116"></a>00116  
     100<a name="l00117"></a>00117                 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0;i&lt;n;i++ ) { 
     101<a name="l00118"></a>00118                         Bms[i] = <span class="keyword">new</span> BM_T ( BMcond0 ); <span class="comment">//copy constructor</span> 
     102<a name="l00119"></a>00119                         <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; pom=Bms[i]-&gt;_epdf(); 
     103<a name="l00120"></a>00120                         jest.set_elements ( i,1.0/n,&amp;pom ); 
     104<a name="l00121"></a>00121                 } 
     105<a name="l00122"></a>00122         }; 
     106<a name="l00123"></a>00123  
     107<a name="l00124"></a>00124         ~<a class="code" href="classbdm_1_1MPF.html" title="Marginalized Particle filter.">MPF</a>() { 
     108<a name="l00125"></a>00125         } 
     109<a name="l00126"></a>00126  
     110<a name="l00127"></a>00127         <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1MPF.html#286d040770d08bd7ff416cea617b1b14" title="Incremental Bayes rule.">bayes</a> ( <span class="keyword">const</span> vec &amp;dt ); 
     111<a name="l00128"></a><a class="code" href="classbdm_1_1MPF.html#2da4cbf7645da52ad5630ada411e3f9f">00128</a>         <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; <a class="code" href="classbdm_1_1MPF.html#2da4cbf7645da52ad5630ada411e3f9f" title="Returns a reference to the epdf representing posterior density on parameters.">_epdf</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> jest;} 
     112<a name="l00129"></a><a class="code" href="classbdm_1_1MPF.html#1401874aa88a7a3f2593070646779af2">00129</a>         <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>* <a class="code" href="classbdm_1_1MPF.html#1401874aa88a7a3f2593070646779af2" title="Returns a pointer to the epdf representing posterior density on parameters. Use with...">_e</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> &amp;jest;} <span class="comment">//Fixme: is it useful?</span> 
     113<a name="l00131"></a><a class="code" href="classbdm_1_1MPF.html#dcecdaf2acbbee51acf3018a70989a7e">00131</a> <span class="comment"></span>        <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1MPF.html#dcecdaf2acbbee51acf3018a70989a7e" title="Set postrior of rvc to samples from epdf0. Statistics of Bms are not re-computed!...">set_est</a> ( <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; epdf0 ) { 
     114<a name="l00132"></a>00132                 <a class="code" href="classbdm_1_1PF.html#6f1988db4c3f602d187a6c15ec89cb1e" title="Set posterior density by sampling from epdf0.">PF::set_est</a> ( epdf0 );  <span class="comment">// sample params in condition</span> 
     115<a name="l00133"></a>00133                 <span class="comment">// copy conditions to BMs</span> 
     116<a name="l00134"></a>00134  
     117<a name="l00135"></a>00135                 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i=0;i&lt;<a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>;i++ ) {Bms[i]-&gt;condition ( <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ) );} 
     118<a name="l00136"></a>00136         } 
     119<a name="l00137"></a>00137  
     120<a name="l00139"></a><a class="code" href="classbdm_1_1MPF.html#82b5a34d9ed0e78452f98d2ecbf1e93c">00139</a>         <a class="code" href="classbdm_1_1BM.html" title="Bayesian Model of the world, i.e. all uncertainty is modeled by probabilities.">BM</a>* <a class="code" href="classbdm_1_1MPF.html#82b5a34d9ed0e78452f98d2ecbf1e93c" title="Access function.">_BM</a>(<span class="keywordtype">int</span> i){<span class="keywordflow">return</span> Bms[i];} 
     121<a name="l00140"></a>00140 }; 
     122<a name="l00141"></a>00141  
     123<a name="l00142"></a>00142 <span class="keyword">template</span>&lt;<span class="keyword">class</span> BM_T&gt; 
     124<a name="l00143"></a><a class="code" href="classbdm_1_1MPF.html#286d040770d08bd7ff416cea617b1b14">00143</a> <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1MPF.html" title="Marginalized Particle filter.">MPF&lt;BM_T&gt;::bayes</a> ( <span class="keyword">const</span> vec &amp;dt ) { 
     125<a name="l00144"></a>00144         <span class="keywordtype">int</span> i; 
     126<a name="l00145"></a>00145         vec lls ( <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ); 
     127<a name="l00146"></a>00146         vec llsP ( <a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a> ); 
     128<a name="l00147"></a>00147         ivec ind; 
     129<a name="l00148"></a>00148         <span class="keywordtype">double</span> mlls=-std::numeric_limits&lt;double&gt;::infinity(); 
     130<a name="l00149"></a>00149  
     131<a name="l00150"></a>00150 <span class="preprocessor">        #pragma omp parallel for</span> 
     132<a name="l00151"></a>00151 <span class="preprocessor"></span>        <span class="keywordflow">for</span> ( i=0;i&lt;<a class="code" href="classbdm_1_1PF.html#eeafaf9b8ad75fe62ee9fd6369e3f7fe" title="number of particles;">n</a>;i++ ) {    
     133<a name="l00152"></a>00152                 <span class="comment">//generate new samples from paramater evolution model;</span> 
     134<a name="l00153"></a>00153                 <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ) = <a class="code" href="classbdm_1_1PF.html#cf3a1b2a407012e47ac878e3aa2fbf34" title="Parameter evolution model.">par</a>.<a class="code" href="classbdm_1_1mpdf.html#e4848a428d8ef0549c6e4a9ed386d9f2" title="Returns a sample from the density conditioned on cond, .">samplecond</a> ( <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ), llsP ( i ) ); 
     135<a name="l00154"></a>00154                 Bms[i]-&gt;condition ( <a class="code" href="classbdm_1_1PF.html#914bd66025692c4018dbd482cb3c47c1" title="pointer into eEmp ">_samples</a> ( i ) ); 
     136<a name="l00155"></a>00155                 Bms[i]-&gt;bayes ( dt ); 
     137<a name="l00156"></a>00156                 lls ( i ) = Bms[i]-&gt;_ll(); <span class="comment">// lls above is also in proposal her must be lls(i) =, not +=!!</span> 
     138<a name="l00157"></a>00157                 <span class="keywordflow">if</span> ( lls ( i ) &gt;mlls ) mlls=lls ( i ); <span class="comment">//find maximum likelihood (for numerical stability)</span> 
     139<a name="l00158"></a>00158         } 
     140<a name="l00159"></a>00159  
     141<a name="l00160"></a>00160         <span class="keywordtype">double</span> sum_w=0.0; 
     142<a name="l00161"></a>00161         <span class="comment">// compute weights</span> 
     143<a name="l00162"></a>00162 <span class="preprocessor">        #pragma omp parallel for</span> 
     144<a name="l00163"></a>00163 <span class="preprocessor"></span>        <span class="keywordflow">for</span> ( i=0;i&lt;n;i++ ) { 
     145<a name="l00164"></a>00164                 <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ( i ) *= exp ( lls ( i ) - mlls ); <span class="comment">// multiply w by likelihood</span> 
     146<a name="l00165"></a>00165                 sum_w+=<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>(i); 
     147<a name="l00166"></a>00166         } 
     148<a name="l00167"></a>00167  
     149<a name="l00168"></a>00168         <span class="keywordflow">if</span> ( sum_w  &gt;0.0 ) { 
     150<a name="l00169"></a>00169                 <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> /=sum_w; <span class="comment">//?</span> 
     151<a name="l00170"></a>00170         } <span class="keywordflow">else</span> { 
     152<a name="l00171"></a>00171                 cout&lt;&lt;<span class="stringliteral">"sum(w)==0"</span>&lt;&lt;endl; 
     153<a name="l00172"></a>00172         } 
     154<a name="l00173"></a>00173  
    154155<a name="l00174"></a>00174  
    155 <a name="l00175"></a>00175  
    156 <a name="l00176"></a>00176         <span class="keywordtype">double</span> eff = 1.0/ ( <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>*<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ); 
    157 <a name="l00177"></a>00177         <span class="keywordflow">if</span> ( eff &lt; ( 0.3*n ) ) { 
    158 <a name="l00178"></a>00178                 ind = <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>.<a class="code" href="classbdm_1_1eEmp.html#f06ce255de5dbb2313f52ee51f82ba3d" title="Function performs resampling, i.e. removal of low-weight samples and duplication...">resample</a>(); 
    159 <a name="l00179"></a>00179                 <span class="comment">// Resample Bms!</span> 
    160 <a name="l00180"></a>00180  
    161 <a name="l00181"></a>00181 <span class="preprocessor">                #pragma omp parallel for</span> 
    162 <a name="l00182"></a>00182 <span class="preprocessor"></span>                <span class="keywordflow">for</span> ( i=0;i&lt;n;i++ ) { 
    163 <a name="l00183"></a>00183                         <span class="keywordflow">if</span> ( ind ( i ) !=i ) {<span class="comment">//replace the current Bm by a new one</span> 
    164 <a name="l00184"></a>00184                                 <span class="comment">//fixme this would require new assignment operator</span> 
    165 <a name="l00185"></a>00185                                 <span class="comment">// *Bms[i] = *Bms[ind ( i ) ];</span> 
    166 <a name="l00186"></a>00186  
    167 <a name="l00187"></a>00187                                 <span class="comment">// poor-man's solution: replicate constructor here</span> 
    168 <a name="l00188"></a>00188                                 <span class="comment">// copied from MPF::MPF</span> 
    169 <a name="l00189"></a>00189                                 <span class="keyword">delete</span> Bms[i]; 
    170 <a name="l00190"></a>00190                                 Bms[i] = <span class="keyword">new</span> BM_T ( *Bms[ind ( i ) ] ); <span class="comment">//copy constructor</span> 
    171 <a name="l00191"></a>00191                                 <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; pom=Bms[i]-&gt;_epdf(); 
    172 <a name="l00192"></a>00192                                 jest.set_elements ( i,1.0/n,&amp;pom ); 
    173 <a name="l00193"></a>00193                         } 
    174 <a name="l00194"></a>00194                 }; 
    175 <a name="l00195"></a>00195                 cout &lt;&lt; <span class="charliteral">'.'</span>; 
    176 <a name="l00196"></a>00196         } 
    177 <a name="l00197"></a>00197 } 
    178 <a name="l00198"></a>00198  
    179 <a name="l00199"></a>00199 } 
    180 <a name="l00200"></a>00200 <span class="preprocessor">#endif // KF_H</span> 
    181 <a name="l00201"></a>00201 <span class="preprocessor"></span> 
    182 <a name="l00202"></a>00202  
     156<a name="l00175"></a>00175         <span class="keywordtype">double</span> eff = 1.0/ ( <a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a>*<a class="code" href="classbdm_1_1PF.html#f5149d5522d1095d39240c4c607f61a3" title="pointer into eEmp ">_w</a> ); 
     157<a name="l00176"></a>00176         <span class="keywordflow">if</span> ( eff &lt; ( 0.3*n ) ) { 
     158<a name="l00177"></a>00177                 ind = <a class="code" href="classbdm_1_1PF.html#dc049265b9086cad7071f98d00a2b9af" title="posterior density">est</a>.<a class="code" href="classbdm_1_1eEmp.html#f06ce255de5dbb2313f52ee51f82ba3d" title="Function performs resampling, i.e. removal of low-weight samples and duplication...">resample</a>(); 
     159<a name="l00178"></a>00178                 <span class="comment">// Resample Bms!</span> 
     160<a name="l00179"></a>00179  
     161<a name="l00180"></a>00180 <span class="preprocessor">                #pragma omp parallel for</span> 
     162<a name="l00181"></a>00181 <span class="preprocessor"></span>                <span class="keywordflow">for</span> ( i=0;i&lt;n;i++ ) { 
     163<a name="l00182"></a>00182                         <span class="keywordflow">if</span> ( ind ( i ) !=i ) {<span class="comment">//replace the current Bm by a new one</span> 
     164<a name="l00183"></a>00183                                 <span class="comment">//fixme this would require new assignment operator</span> 
     165<a name="l00184"></a>00184                                 <span class="comment">// *Bms[i] = *Bms[ind ( i ) ];</span> 
     166<a name="l00185"></a>00185  
     167<a name="l00186"></a>00186                                 <span class="comment">// poor-man's solution: replicate constructor here</span> 
     168<a name="l00187"></a>00187                                 <span class="comment">// copied from MPF::MPF</span> 
     169<a name="l00188"></a>00188                                 <span class="keyword">delete</span> Bms[i]; 
     170<a name="l00189"></a>00189                                 Bms[i] = <span class="keyword">new</span> BM_T ( *Bms[ind ( i ) ] ); <span class="comment">//copy constructor</span> 
     171<a name="l00190"></a>00190                                 <span class="keyword">const</span> <a class="code" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density.">epdf</a>&amp; pom=Bms[i]-&gt;_epdf(); 
     172<a name="l00191"></a>00191                                 jest.set_elements ( i,1.0/n,&amp;pom ); 
     173<a name="l00192"></a>00192                         } 
     174<a name="l00193"></a>00193                 }; 
     175<a name="l00194"></a>00194                 cout &lt;&lt; <span class="charliteral">'.'</span>; 
     176<a name="l00195"></a>00195         } 
     177<a name="l00196"></a>00196 } 
     178<a name="l00197"></a>00197  
     179<a name="l00198"></a>00198 } 
     180<a name="l00199"></a>00199 <span class="preprocessor">#endif // KF_H</span> 
     181<a name="l00200"></a>00200 <span class="preprocessor"></span> 
     182<a name="l00201"></a>00201  
    183183</pre></div></div> 
    184 <hr size="1"><address style="text-align: right;"><small>Generated on Tue Jan 27 16:29:52 2009 for mixpp by&nbsp; 
     184<hr size="1"><address style="text-align: right;"><small>Generated on Fri Feb 6 15:29:45 2009 for mixpp by&nbsp; 
    185185<a href="http://www.doxygen.org/index.html"> 
    186186<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>