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18<h1>work/git/mixpp/bdm/stat/libFN.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//</span>
19<a name="l00002"></a>00002 <span class="comment">// C++ Interface: itpp_ext</span>
20<a name="l00003"></a>00003 <span class="comment">//</span>
21<a name="l00004"></a>00004 <span class="comment">// Description:</span>
22<a name="l00005"></a>00005 <span class="comment">//</span>
23<a name="l00006"></a>00006 <span class="comment">//</span>
24<a name="l00007"></a>00007 <span class="comment">// Author: smidl &lt;smidl@utia.cas.cz&gt;, (C) 2008</span>
25<a name="l00008"></a>00008 <span class="comment">//</span>
26<a name="l00009"></a>00009 <span class="comment">// Copyright: See COPYING file that comes with this distribution</span>
27<a name="l00010"></a>00010 <span class="comment">//</span>
28<a name="l00011"></a>00011 <span class="comment">//</span>
29<a name="l00012"></a>00012 <span class="preprocessor">#ifndef FN_H</span>
30<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#define FN_H</span>
31<a name="l00014"></a>00014 <span class="preprocessor"></span>
32<a name="l00015"></a>00015 <span class="preprocessor">#include &lt;itpp/itbase.h&gt;</span>
33<a name="l00016"></a>00016 <span class="preprocessor">#include "<a class="code" href="libBM_8h.html" title="Bayesian Models (bm) that use Bayes rule to learn from observations.">libBM.h</a>"</span>
34<a name="l00017"></a>00017
35<a name="l00018"></a>00018 <span class="keyword">namespace </span>bdm{
36<a name="l00019"></a>00019
37<a name="l00021"></a><a class="code" href="classbdm_1_1constfn.html">00021</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1constfn.html" title="class representing function , here rv is empty">constfn</a> : <span class="keyword">public</span> <a class="code" href="classbdm_1_1fnc.html" title="Class representing function  of variable  represented by rv.">fnc</a>
38<a name="l00022"></a>00022 {
39<a name="l00024"></a>00024                 vec val;
40<a name="l00025"></a>00025
41<a name="l00026"></a>00026         <span class="keyword">public</span>:
42<a name="l00027"></a>00027                 <span class="comment">//vec eval() {return val;};</span>
43<a name="l00029"></a><a class="code" href="classbdm_1_1constfn.html#33c2631ddcad9e81ef4b743d83eed4d4">00029</a> <span class="comment"></span>                vec <a class="code" href="classbdm_1_1constfn.html#33c2631ddcad9e81ef4b743d83eed4d4" title="inherited">eval</a> ( <span class="keyword">const</span> vec &amp;cond ) {<span class="keywordflow">return</span> val;};
44<a name="l00031"></a><a class="code" href="classbdm_1_1constfn.html#7df0693d3ef4f1d2a52a5a3c3fce44af">00031</a>                 <a class="code" href="classbdm_1_1constfn.html#7df0693d3ef4f1d2a52a5a3c3fce44af" title="Default constructor.">constfn</a> ( <span class="keyword">const</span> vec &amp;val0 ) :<a class="code" href="classbdm_1_1fnc.html" title="Class representing function  of variable  represented by rv.">fnc</a>(val0.length()), val ( val0 ) {};
45<a name="l00032"></a>00032 };
46<a name="l00033"></a>00033
47<a name="l00035"></a><a class="code" href="classbdm_1_1linfn.html">00035</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1linfn.html" title="Class representing function .">linfn</a>: <span class="keyword">public</span> <a class="code" href="classbdm_1_1fnc.html" title="Class representing function  of variable  represented by rv.">fnc</a>
48<a name="l00036"></a>00036 {
49<a name="l00038"></a>00038                 <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> rv;
50<a name="l00040"></a>00040                 mat A;
51<a name="l00042"></a>00042                 vec B;
52<a name="l00043"></a>00043         <span class="keyword">public</span> :
53<a name="l00044"></a><a class="code" href="classbdm_1_1linfn.html#b8063094a2aa210dcf7ae73e2b85e09c">00044</a>                 vec <a class="code" href="classbdm_1_1linfn.html#b8063094a2aa210dcf7ae73e2b85e09c" title="function evaluates numerical value of  at  cond ">eval</a> (<span class="keyword">const</span> vec &amp;cond ) {it_assert_debug ( cond.length() ==rv.<a class="code" href="classbdm_1_1RV.html#2174751a00ce19f941edd2c1a861be67" title="Return number of scalars in the RV.">count</a>(), <span class="stringliteral">"linfn::eval Wrong cond."</span> );<span class="keywordflow">return</span> A*cond+B;};
54<a name="l00045"></a>00045
55<a name="l00046"></a>00046 <span class="comment">//              linfn evalsome ( ivec &amp;rvind );</span>
56<a name="l00048"></a><a class="code" href="classbdm_1_1linfn.html#df4517947726204540735452a41206da">00048</a> <span class="comment"></span>                <a class="code" href="classbdm_1_1linfn.html#df4517947726204540735452a41206da" title="default constructor">linfn</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_1fnc.html" title="Class representing function  of variable  represented by rv.">fnc</a>(rv0.count()), rv ( rv0 ),A ( eye ( rv0.count() ) ),B ( zeros ( rv0.count() ) ) { };
57<a name="l00050"></a><a class="code" href="classbdm_1_1linfn.html#7e0e714b814532fc3e38daede24c5e68">00050</a>                 <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1linfn.html#7e0e714b814532fc3e38daede24c5e68" title="Set values of A and B.">set_parameters</a> ( <span class="keyword">const</span> mat &amp;A0 , <span class="keyword">const</span> vec &amp;B0 ) {A=A0; B=B0;};
58<a name="l00051"></a>00051 };
59<a name="l00052"></a>00052
60<a name="l00053"></a>00053
61<a name="l00063"></a><a class="code" href="classbdm_1_1diffbifn.html">00063</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1diffbifn.html" title="Class representing a differentiable function of two variables .">diffbifn</a>: <span class="keyword">public</span> <a class="code" href="classbdm_1_1fnc.html" title="Class representing function  of variable  represented by rv.">fnc</a>
62<a name="l00064"></a>00064 {
63<a name="l00065"></a>00065         <span class="keyword">protected</span>:
64<a name="l00067"></a><a class="code" href="classbdm_1_1diffbifn.html#5f56547d8e9378b669d3cc19d7831cbb">00067</a>                 <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> <a class="code" href="classbdm_1_1diffbifn.html#5f56547d8e9378b669d3cc19d7831cbb" title="Indentifier of the first rv.">rvx</a>;
65<a name="l00069"></a><a class="code" href="classbdm_1_1diffbifn.html#a8e3e861d5ec2a7ae9524e6338e58320">00069</a>                 <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> <a class="code" href="classbdm_1_1diffbifn.html#a8e3e861d5ec2a7ae9524e6338e58320" title="Indentifier of the second rv.">rvu</a>;
66<a name="l00071"></a><a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e">00071</a>                 <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>;
67<a name="l00073"></a><a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0">00073</a>                 <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0" title="cache for rvu.count()">dimu</a>;
68<a name="l00074"></a>00074         <span class="keyword">public</span>:
69<a name="l00076"></a><a class="code" href="classbdm_1_1diffbifn.html#188f31066bd72e1bf0ddacd1eb0e6af3">00076</a>                 vec <a class="code" href="classbdm_1_1diffbifn.html#188f31066bd72e1bf0ddacd1eb0e6af3" title="Evaluates  (VS: Do we really need common eval? ).">eval</a> ( <span class="keyword">const</span> vec &amp;cond )
70<a name="l00077"></a>00077                 {
71<a name="l00078"></a>00078                         it_assert_debug ( cond.length() == ( <a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>+<a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0" title="cache for rvu.count()">dimu</a> ), <span class="stringliteral">"linfn::eval Wrong cond."</span> );
72<a name="l00079"></a>00079                         <span class="keywordflow">return</span> <a class="code" href="classbdm_1_1diffbifn.html#188f31066bd72e1bf0ddacd1eb0e6af3" title="Evaluates  (VS: Do we really need common eval? ).">eval</a> ( cond ( 0,<a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>-1 ),cond ( <a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>,<a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>+<a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0" title="cache for rvu.count()">dimu</a> ) );<span class="comment">//-1 = end (in matlab)</span>
73<a name="l00080"></a>00080                 };
74<a name="l00081"></a>00081
75<a name="l00083"></a><a class="code" href="classbdm_1_1diffbifn.html#b5462c05b58cd38367ff946836bb82d3">00083</a>                 <span class="keyword">virtual</span> vec <a class="code" href="classbdm_1_1diffbifn.html#188f31066bd72e1bf0ddacd1eb0e6af3" title="Evaluates  (VS: Do we really need common eval? ).">eval</a> ( <span class="keyword">const</span> vec &amp;x0, <span class="keyword">const</span> vec &amp;u0 ) {<span class="keywordflow">return</span> zeros ( <a class="code" href="classbdm_1_1fnc.html#52156cb4a52a62d51fc7455985797a62" title="Length of the output vector.">dimy</a> );};
76<a name="l00085"></a><a class="code" href="classbdm_1_1diffbifn.html#651184f808a35f236dbfea21aca1b6ac">00085</a>                 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1diffbifn.html#651184f808a35f236dbfea21aca1b6ac" title="Evaluates  and writes result into A .">dfdx_cond</a> ( <span class="keyword">const</span> vec &amp;x0, <span class="keyword">const</span> vec &amp;u0, mat &amp;A , <span class="keywordtype">bool</span> full=<span class="keyword">true</span> ) {};
77<a name="l00087"></a><a class="code" href="classbdm_1_1diffbifn.html#6ea1dc7a482601b29c5ba36a52d20d07">00087</a>                 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1diffbifn.html#6ea1dc7a482601b29c5ba36a52d20d07" title="Evaluates  and writes result into A .">dfdu_cond</a> ( <span class="keyword">const</span> vec &amp;x0, <span class="keyword">const</span> vec &amp;u0, mat &amp;A, <span class="keywordtype">bool</span> full=<span class="keyword">true</span> ) {};
78<a name="l00089"></a><a class="code" href="classbdm_1_1diffbifn.html#6ecfa9bf42b2421bd56c260a8b2c51e1">00089</a>                 <a class="code" href="classbdm_1_1diffbifn.html#6ecfa9bf42b2421bd56c260a8b2c51e1" title="Default constructor (dimy is not set!).">diffbifn</a> (<span class="keywordtype">int</span> <a class="code" href="classbdm_1_1fnc.html#52156cb4a52a62d51fc7455985797a62" title="Length of the output vector.">dimy</a>, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> rvx0, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> rvu0 ) : <a class="code" href="classbdm_1_1fnc.html" title="Class representing function  of variable  represented by rv.">fnc</a>(dimy), <a class="code" href="classbdm_1_1diffbifn.html#5f56547d8e9378b669d3cc19d7831cbb" title="Indentifier of the first rv.">rvx</a> ( rvx0 ),<a class="code" href="classbdm_1_1diffbifn.html#a8e3e861d5ec2a7ae9524e6338e58320" title="Indentifier of the second rv.">rvu</a> ( rvu0 ) {<a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>=<a class="code" href="classbdm_1_1diffbifn.html#5f56547d8e9378b669d3cc19d7831cbb" title="Indentifier of the first rv.">rvx</a>.<a class="code" href="classbdm_1_1RV.html#2174751a00ce19f941edd2c1a861be67" title="Return number of scalars in the RV.">count</a>();<a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0" title="cache for rvu.count()">dimu</a>=<a class="code" href="classbdm_1_1diffbifn.html#a8e3e861d5ec2a7ae9524e6338e58320" title="Indentifier of the second rv.">rvu</a>.<a class="code" href="classbdm_1_1RV.html#2174751a00ce19f941edd2c1a861be67" title="Return number of scalars in the RV.">count</a>();};
79<a name="l00091"></a><a class="code" href="classbdm_1_1diffbifn.html#1b3c8f5949f13d86d2661e191d4b369b">00091</a>                 <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1diffbifn.html#1b3c8f5949f13d86d2661e191d4b369b" title="access function">_dimx</a>()<span class="keyword"> const</span>{<span class="keywordflow">return</span> <a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>;}
80<a name="l00093"></a><a class="code" href="classbdm_1_1diffbifn.html#031458f38c97cdb3aecde16f6a06dced">00093</a>                 <span class="keywordtype">int</span> <a class="code" href="classbdm_1_1diffbifn.html#031458f38c97cdb3aecde16f6a06dced" title="access function">_dimu</a>()<span class="keyword"> const</span>{<span class="keywordflow">return</span> <a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0" title="cache for rvu.count()">dimu</a>;}
81<a name="l00094"></a>00094 };
82<a name="l00095"></a>00095
83<a name="l00097"></a>00097 <span class="comment">//TODO can be generalized into multilinear form!</span>
84<a name="l00098"></a><a class="code" href="classbdm_1_1bilinfn.html">00098</a> <span class="keyword">class </span><a class="code" href="classbdm_1_1bilinfn.html" title="Class representing function .">bilinfn</a>: <span class="keyword">public</span> <a class="code" href="classbdm_1_1diffbifn.html" title="Class representing a differentiable function of two variables .">diffbifn</a>
85<a name="l00099"></a>00099 {
86<a name="l00100"></a>00100                 mat A;
87<a name="l00101"></a>00101                 mat B;
88<a name="l00102"></a>00102         <span class="keyword">public</span> :
89<a name="l00103"></a>00103                 vec <a class="code" href="classbdm_1_1bilinfn.html#e36a16e72e7f9fedf3cb18d2d5505a24" title="Evaluates .">eval</a> ( <span class="keyword">const</span>  vec &amp;x0, <span class="keyword">const</span> vec &amp;u0 );
90<a name="l00104"></a>00104
91<a name="l00106"></a><a class="code" href="classbdm_1_1bilinfn.html#1e86e5081f13964ee64342f8e988032c">00106</a>                 <a class="code" href="classbdm_1_1bilinfn.html#1e86e5081f13964ee64342f8e988032c" title="Default constructor.">bilinfn</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;rvx0, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvu0 ) : <a class="code" href="classbdm_1_1diffbifn.html" title="Class representing a differentiable function of two variables .">diffbifn</a> (<a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>, rvx0,rvu0 ) ,A ( eye ( <a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a> ) ),B ( zeros ( <a class="code" href="classbdm_1_1diffbifn.html#a193aa2c4a500139c0c4b669691e588e" title="cache for rvx.count()">dimx</a>,<a class="code" href="classbdm_1_1diffbifn.html#30c45617eec89adeb4ebaa763d093fb0" title="cache for rvu.count()">dimu</a> ) )  {};
92<a name="l00108"></a>00108                 <a class="code" href="classbdm_1_1bilinfn.html#1e86e5081f13964ee64342f8e988032c" title="Default constructor.">bilinfn</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;rvx0, <span class="keyword">const</span> <a class="code" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a> &amp;rvu0, <span class="keyword">const</span> mat &amp;A0, <span class="keyword">const</span> mat &amp;B0 );
93<a name="l00110"></a><a class="code" href="classbdm_1_1bilinfn.html#33066f1054dd259df2ec5fafae4b46e6">00110</a>                 <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1bilinfn.html#33066f1054dd259df2ec5fafae4b46e6" title="Evaluates  and writes result into A .">dfdx_cond</a> ( <span class="keyword">const</span> vec &amp;x0, <span class="keyword">const</span> vec &amp;u0, mat &amp;F, <span class="keywordtype">bool</span> full )
94<a name="l00111"></a>00111                 {
95<a name="l00112"></a>00112                         it_assert_debug ( ( F.cols() ==A.cols() ) &amp; ( F.rows() ==A.rows() ),<span class="stringliteral">"Allocated F is not compatible."</span> );
96<a name="l00113"></a>00113                         <span class="keywordflow">if</span> ( full ) F=A;        <span class="comment">//else : nothing has changed no need to regenerate</span>
97<a name="l00114"></a>00114                 }
98<a name="l00116"></a><a class="code" href="classbdm_1_1bilinfn.html#9cfe2f1c115ba7c3c75849a10a4f2c08">00116</a>                 <span class="keywordtype">void</span> <a class="code" href="classbdm_1_1bilinfn.html#9cfe2f1c115ba7c3c75849a10a4f2c08" title="Evaluates  and writes result into A .">dfdu_cond</a> ( <span class="keyword">const</span> vec &amp;x0, <span class="keyword">const</span> vec &amp;u0, mat &amp;F,  <span class="keywordtype">bool</span> full=<span class="keyword">true</span> )
99<a name="l00117"></a>00117                 {
100<a name="l00118"></a>00118                         it_assert_debug ( ( F.cols() ==B.cols() ) &amp; ( F.rows() ==B.rows() ),<span class="stringliteral">"Allocated F is not compatible."</span> );
101<a name="l00119"></a>00119                         <span class="keywordflow">if</span> ( full ) F=B;        <span class="comment">//else : nothing has changed no need to regenerate</span>
102<a name="l00120"></a>00120                 }
103<a name="l00121"></a>00121 };
104<a name="l00122"></a>00122
105<a name="l00123"></a>00123 } <span class="comment">//namespace</span>
106<a name="l00124"></a>00124 <span class="preprocessor">#endif // FN_H</span>
107</pre></div></div>
108<hr size="1"><address style="text-align: right;"><small>Generated on Tue Jan 27 16:29:53 2009 for mixpp by&nbsp;
109<a href="http://www.doxygen.org/index.html">
110<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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