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25  <div class="navpath"><b>bdm</b>::<a class="el" href="classbdm_1_1egiw.html">egiw</a>
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29<h1>bdm::egiw Class Reference</h1><!-- doxytag: class="bdm::egiw" --><!-- doxytag: inherits="bdm::eEF" -->Gauss-inverse-Wishart density stored in LD form. 
30<a href="#_details">More...</a>
31<p>
32<code>#include &lt;<a class="el" href="libEF_8h-source.html">libEF.h</a>&gt;</code>
33<p>
34<div class="dynheader">
35Inheritance diagram for bdm::egiw:</div>
36<div class="dynsection">
37<p><center><img src="classbdm_1_1egiw__inherit__graph.png" border="0" usemap="#bdm_1_1egiw__inherit__map" alt="Inheritance graph"></center>
38<map name="bdm_1_1egiw__inherit__map">
39<area shape="rect" href="classbdm_1_1eEF.html" title="General conjugate exponential family posterior density." alt="" coords="9,161,89,188"><area shape="rect" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density." alt="" coords="7,84,92,111"><area shape="rect" href="classbdm_1_1base.html" title="Root class of BDM objects." alt="" coords="5,7,93,33"></map>
40<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
41<div class="dynheader">
42Collaboration diagram for bdm::egiw:</div>
43<div class="dynsection">
44<p><center><img src="classbdm_1_1egiw__coll__graph.png" border="0" usemap="#bdm_1_1egiw__coll__map" alt="Collaboration graph"></center>
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46<area shape="rect" href="classbdm_1_1eEF.html" title="General conjugate exponential family posterior density." alt="" coords="11,263,91,289"><area shape="rect" href="classbdm_1_1epdf.html" title="Probability density function with numerical statistics, e.g. posterior density." alt="" coords="5,183,91,209"><area shape="rect" href="classbdm_1_1base.html" title="Root class of BDM objects." alt="" coords="9,7,97,33"><area shape="rect" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables." alt="" coords="64,87,139,113"><area shape="rect" href="classldmat.html" title="Matrix stored in LD form, (commonly known as UD)." alt="" coords="116,263,175,289"><area shape="rect" href="classsqmat.html" title="Virtual class for representation of double symmetric matrices in square&#45;root form..." alt="" coords="115,183,176,209"></map>
47<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
48
49<p>
50<a href="classbdm_1_1egiw-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
51<tr><td></td></tr>
52<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
53<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a60e072c191acf65ab480deeb11c5b88"></a><!-- doxytag: member="bdm::egiw::egiw" ref="a60e072c191acf65ab480deeb11c5b88" args="(RV rv, mat V0, double nu0=-1.0)" -->
54&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#a60e072c191acf65ab480deeb11c5b88">egiw</a> (<a class="el" href="classbdm_1_1RV.html">RV</a> <a class="el" href="classbdm_1_1epdf.html#62c5b8ff71d9ebe6cd58d3c342eb1dc8">rv</a>, mat V0, double nu0=-1.0)</td></tr>
55
56<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default constructor, if nu0&lt;0 a minimal nu0 will be computed. <br></td></tr>
57<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bc3db93cb60dd29187eb3c6cfd557f97"></a><!-- doxytag: member="bdm::egiw::egiw" ref="bc3db93cb60dd29187eb3c6cfd557f97" args="(RV rv, ldmat V0, double nu0=-1.0)" -->
58&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#bc3db93cb60dd29187eb3c6cfd557f97">egiw</a> (<a class="el" href="classbdm_1_1RV.html">RV</a> <a class="el" href="classbdm_1_1epdf.html#62c5b8ff71d9ebe6cd58d3c342eb1dc8">rv</a>, <a class="el" href="classldmat.html">ldmat</a> V0, double nu0=-1.0)</td></tr>
59
60<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Full constructor for V in <a class="el" href="classldmat.html" title="Matrix stored in LD form, (commonly known as UD).">ldmat</a> form. <br></td></tr>
61<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="920f21548b7a3723923dd108fe514c61"></a><!-- doxytag: member="bdm::egiw::sample" ref="920f21548b7a3723923dd108fe514c61" args="() const " -->
62vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#920f21548b7a3723923dd108fe514c61">sample</a> () const </td></tr>
63
64<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Returns a sample, <img class="formulaInl" alt="$x$" src="form_28.png"> from density <img class="formulaInl" alt="$epdf(rv)$" src="form_59.png">. <br></td></tr>
65<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="df70c05f918c3a6f86d60f10c1fd6ba2"></a><!-- doxytag: member="bdm::egiw::mean" ref="df70c05f918c3a6f86d60f10c1fd6ba2" args="() const " -->
66vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#df70c05f918c3a6f86d60f10c1fd6ba2">mean</a> () const </td></tr>
67
68<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">return expected value <br></td></tr>
69<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="c1ecc406613cc2341225dc10c3d3b46a"></a><!-- doxytag: member="bdm::egiw::variance" ref="c1ecc406613cc2341225dc10c3d3b46a" args="() const " -->
70vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#c1ecc406613cc2341225dc10c3d3b46a">variance</a> () const </td></tr>
71
72<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">return expected variance (not covariance!) <br></td></tr>
73<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d2075aa2306648b3e4fe40bb86628d5c"></a><!-- doxytag: member="bdm::egiw::mean_mat" ref="d2075aa2306648b3e4fe40bb86628d5c" args="(mat &amp;M, mat &amp;R) const " -->
74void&nbsp;</td><td class="memItemRight" valign="bottom"><b>mean_mat</b> (mat &amp;M, mat &amp;R) const </td></tr>
75
76<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="bfb8e7c619b34ad804a73bff71742b5e"></a><!-- doxytag: member="bdm::egiw::evallog_nn" ref="bfb8e7c619b34ad804a73bff71742b5e" args="(const vec &amp;val) const " -->
77double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#bfb8e7c619b34ad804a73bff71742b5e">evallog_nn</a> (const vec &amp;val) const </td></tr>
78
79<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">In this instance, val= [theta, r]. For multivariate instances, it is stored columnwise val = [theta_1 theta_2 ... r_1 r_2 ]. <br></td></tr>
80<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="41d72ba7b2abc8a9a4209ffa98ed5633"></a><!-- doxytag: member="bdm::egiw::lognc" ref="41d72ba7b2abc8a9a4209ffa98ed5633" args="() const " -->
81double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#41d72ba7b2abc8a9a4209ffa98ed5633">lognc</a> () const </td></tr>
82
83<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">logarithm of the normalizing constant, <img class="formulaInl" alt="$\mathcal{I}$" src="form_60.png"> <br></td></tr>
84<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="15792f3112e5cf67d572f491b09324c8"></a><!-- doxytag: member="bdm::egiw::_V" ref="15792f3112e5cf67d572f491b09324c8" args="()" -->
85<a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#15792f3112e5cf67d572f491b09324c8">_V</a> ()</td></tr>
86
87<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">returns a pointer to the internal statistics. Use with Care! <br></td></tr>
88<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ad9c539a80a552e837245ddcebcbbba4"></a><!-- doxytag: member="bdm::egiw::_V" ref="ad9c539a80a552e837245ddcebcbbba4" args="() const " -->
89const <a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#ad9c539a80a552e837245ddcebcbbba4">_V</a> () const </td></tr>
90
91<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">returns a pointer to the internal statistics. Use with Care! <br></td></tr>
92<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a025ee710274ca142dd0ae978735ad4a"></a><!-- doxytag: member="bdm::egiw::_nu" ref="a025ee710274ca142dd0ae978735ad4a" args="()" -->
93double &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#a025ee710274ca142dd0ae978735ad4a">_nu</a> ()</td></tr>
94
95<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">returns a pointer to the internal statistics. Use with Care! <br></td></tr>
96<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="cf3b2bcb158c15c24788bba90e4154e4"></a><!-- doxytag: member="bdm::egiw::_nu" ref="cf3b2bcb158c15c24788bba90e4154e4" args="() const " -->
97const double &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><b>_nu</b> () const </td></tr>
98
99<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8e610e95401a11baf34f65e16ecd87be"></a><!-- doxytag: member="bdm::egiw::pow" ref="8e610e95401a11baf34f65e16ecd87be" args="(double p)" -->
100void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#8e610e95401a11baf34f65e16ecd87be">pow</a> (double p)</td></tr>
101
102<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Power of the density, used e.g. to flatten the density. <br></td></tr>
103<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="deef7d6273ba4d5a5cf0bbd91ec7277a"></a><!-- doxytag: member="bdm::egiw::dupdate" ref="deef7d6273ba4d5a5cf0bbd91ec7277a" args="(mat &amp;v)" -->
104virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1eEF.html#deef7d6273ba4d5a5cf0bbd91ec7277a">dupdate</a> (mat &amp;v)</td></tr>
105
106<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">TODO decide if it is really needed. <br></td></tr>
107<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a36d06ecdd6f4c79dc122510eaccc692"></a><!-- doxytag: member="bdm::egiw::evallog" ref="a36d06ecdd6f4c79dc122510eaccc692" args="(const vec &amp;val) const " -->
108virtual double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1eEF.html#a36d06ecdd6f4c79dc122510eaccc692">evallog</a> (const vec &amp;val) const </td></tr>
109
110<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Evaluate normalized log-probability. <br></td></tr>
111<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="79a7c8ea8c02e45d410bd1d7ffd72b41"></a><!-- doxytag: member="bdm::egiw::evallog" ref="79a7c8ea8c02e45d410bd1d7ffd72b41" args="(const mat &amp;Val) const " -->
112virtual vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1eEF.html#79a7c8ea8c02e45d410bd1d7ffd72b41">evallog</a> (const mat &amp;Val) const </td></tr>
113
114<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Evaluate normalized log-probability for many samples. <br></td></tr>
115<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b4cf45fd83cc7573ede9fe1215256058"></a><!-- doxytag: member="bdm::egiw::sample_m" ref="b4cf45fd83cc7573ede9fe1215256058" args="(int N) const " -->
116virtual mat&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#b4cf45fd83cc7573ede9fe1215256058">sample_m</a> (int N) const </td></tr>
117
118<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Returns N samples from density <img class="formulaInl" alt="$epdf(rv)$" src="form_59.png">. <br></td></tr>
119<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="34956d4dd3176eeb5937cf48a1546b62"></a><!-- doxytag: member="bdm::egiw::evallog_m" ref="34956d4dd3176eeb5937cf48a1546b62" args="(const mat &amp;Val) const " -->
120virtual vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#34956d4dd3176eeb5937cf48a1546b62">evallog_m</a> (const mat &amp;Val) const </td></tr>
121
122<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Compute log-probability of multiple values argument <code>val</code>. <br></td></tr>
123<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e584eac5579c1b6384947ecf66166c77"></a><!-- doxytag: member="bdm::egiw::condition" ref="e584eac5579c1b6384947ecf66166c77" args="(const RV &amp;rv) const " -->
124virtual <a class="el" href="classbdm_1_1mpdf.html">mpdf</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#e584eac5579c1b6384947ecf66166c77">condition</a> (const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;<a class="el" href="classbdm_1_1epdf.html#62c5b8ff71d9ebe6cd58d3c342eb1dc8">rv</a>) const </td></tr>
125
126<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return conditional density on the given <a class="el" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a>, the remaining rvs will be in conditioning. <br></td></tr>
127<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="3fb2ece54f720b62ad325e61214fa0a1"></a><!-- doxytag: member="bdm::egiw::marginal" ref="3fb2ece54f720b62ad325e61214fa0a1" args="(const RV &amp;rv) const " -->
128virtual <a class="el" href="classbdm_1_1epdf.html">epdf</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#3fb2ece54f720b62ad325e61214fa0a1">marginal</a> (const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;<a class="el" href="classbdm_1_1epdf.html#62c5b8ff71d9ebe6cd58d3c342eb1dc8">rv</a>) const </td></tr>
129
130<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return marginal density on the given <a class="el" href="classbdm_1_1RV.html" title="Class representing variables, most often random variables.">RV</a>, the remainig rvs are intergrated out. <br></td></tr>
131<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a4ab378d5e004c3ff3e2d4e64f7bba21"></a><!-- doxytag: member="bdm::egiw::_rv" ref="a4ab378d5e004c3ff3e2d4e64f7bba21" args="() const " -->
132const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#a4ab378d5e004c3ff3e2d4e64f7bba21">_rv</a> () const </td></tr>
133
134<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">access function, possibly dangerous! <br></td></tr>
135<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="62e88cbce0ce77a8692f5e15d76e805f"></a><!-- doxytag: member="bdm::egiw::_renewrv" ref="62e88cbce0ce77a8692f5e15d76e805f" args="(const RV &amp;in_rv)" -->
136void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#62e88cbce0ce77a8692f5e15d76e805f">_renewrv</a> (const <a class="el" href="classbdm_1_1RV.html">RV</a> &amp;in_rv)</td></tr>
137
138<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">modifier function - useful when copying epdfs <br></td></tr>
139<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
140<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ae56852845c6af176fd9017dbebbbd52"></a><!-- doxytag: member="bdm::egiw::V" ref="ae56852845c6af176fd9017dbebbbd52" args="" -->
141<a class="el" href="classldmat.html">ldmat</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#ae56852845c6af176fd9017dbebbbd52">V</a></td></tr>
142
143<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Extended information matrix of sufficient statistics. <br></td></tr>
144<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="447eacf19d4f4083872686f044814dc4"></a><!-- doxytag: member="bdm::egiw::nu" ref="447eacf19d4f4083872686f044814dc4" args="" -->
145double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#447eacf19d4f4083872686f044814dc4">nu</a></td></tr>
146
147<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Number of data records (degrees of freedom) of sufficient statistics. <br></td></tr>
148<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="40b68a9c3b2120fba94cc4d2fcd291e1"></a><!-- doxytag: member="bdm::egiw::xdim" ref="40b68a9c3b2120fba94cc4d2fcd291e1" args="" -->
149int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#40b68a9c3b2120fba94cc4d2fcd291e1">xdim</a></td></tr>
150
151<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Dimension of the output. <br></td></tr>
152<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="322414c32d9a21a006a5aab0311f64fd"></a><!-- doxytag: member="bdm::egiw::nPsi" ref="322414c32d9a21a006a5aab0311f64fd" args="" -->
153int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1egiw.html#322414c32d9a21a006a5aab0311f64fd">nPsi</a></td></tr>
154
155<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Dimension of the regressor. <br></td></tr>
156<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="62c5b8ff71d9ebe6cd58d3c342eb1dc8"></a><!-- doxytag: member="bdm::egiw::rv" ref="62c5b8ff71d9ebe6cd58d3c342eb1dc8" args="" -->
157<a class="el" href="classbdm_1_1RV.html">RV</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classbdm_1_1epdf.html#62c5b8ff71d9ebe6cd58d3c342eb1dc8">rv</a></td></tr>
158
159<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Identified of the random variable. <br></td></tr>
160</table>
161<hr><a name="_details"></a><h2>Detailed Description</h2>
162Gauss-inverse-Wishart density stored in LD form.
163<p>
164For <img class="formulaInl" alt="$p$" src="form_42.png">-variate densities, given rv.count() should be <img class="formulaInl" alt="$p\times$" src="form_72.png"> V.rows(). <hr>The documentation for this class was generated from the following files:<ul>
165<li>work/git/mixpp/bdm/stat/<a class="el" href="libEF_8h-source.html">libEF.h</a><li>work/git/mixpp/bdm/stat/libEF.cpp</ul>
166</div>
167<hr size="1"><address style="text-align: right;"><small>Generated on Tue Jan 27 16:31:34 2009 for mixpp by&nbsp;
168<a href="http://www.doxygen.org/index.html">
169<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
170</body>
171</html>
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